- Amlodipina X valsartan no manejo do risco cardiovascular : resultados do estudo VALUE
Esta página já teve 132.477.842 acessos - desde 16 maio de 2003. Média de 24.702 acessos diários
home | entre em contato
 

Hipertensão/Pressão Alta

Amlodipina X valsartan no manejo do risco cardiovascular : resultados do estudo VALUE

22/06/2004
 

 

O ensaio clnico VALUE (Valsartan Antihypertensive Long-term Use Evaluation) foi desenhado para testar a hiptese de que o valsartan ofereceria, com relao amlodipina, menor morbi-mortalidade cardaca em pacientes hipertensos com alto risco cardiovascular. 15245 pacientes com idades de 50 anos ou mais participaram do estudo controlado, multicntrico, randomizado, duplo-cego e pareado publicado na ltima edio da respeitada revista The Lancet. Observou-se que tanto o valsartan quanto a amlodipina oferecem resultados semelhantes no manejo do risco cardiovascular nos pacientes estudados.

The Lancet Volume 363, Number 9426, Pages 2022-31,19 June 2004

Outcomes in hypertensive patients at high cardiovascular risk treated with regimens based on valsartan or amlodipine: the VALUE randomised trial

Stevo Julius, Sverre E Kjeldsen, Michael Weber, Hans R Brunner, Steffan Ekman, Lennart Hansson, Tsushung Hua, John Laragh, Gordon T McInnes, Lada Mitchell, Francis Plat, Anthony Schork, Beverly Smith, Alberto Zanchetti, for the VALUE trial group*


*Members listed at end of article


University of Michigan, Ann Arbor, USA (Prof S Julius MD, Prof S E Kjeldsen MD, Prof A Schork PhD); Ullevaal University Hospital, Oslo, Norway (Prof S E Kjeldsen); State University of New York, Brooklyn, NY, USA (Prof M Weber MD); University of Lausanne, Lausanne, Switzerland (Prof H R Brunner MD); University of Uppsala, Uppsala, Sweden (Prof L Hansson MD, deceased); Novartis Pharma, Basel, Switzerland (S Ekman MSc Pharm, L Mitchell PhD, F Plat MD); Novartis Pharma, East Hanover, NJ, USA (T A Hua PhD, B Smith BSN); Cornell Medical Center, New York, NY, USA (Prof J Laragh MD); University of Glasgow, Glasgow, UK (Prof G T McInnes MD); Istituto Auxologico Italiano, Ospedale Maggiore and University of Milan, Milan, Italy (Prof A Zanchetti MD)


Correspondence to: Prof Stevo Julius, Division of Cardiovascular Medicine, Department of Internal Medicine, 3918 TC, University of Michigan Medical Center, Ann Arbor, MI 48109-0356, USA (e-mail:sjulius@med.umich.edu)

Summary
Introduction
Methods
Results
Discussion
References

Summary

Background The Valsartan Antihypertensive Long-term Use Evaluation (VALUE) trial was designed to test the hypothesis that for the same blood-pressure control, valsartan would reduce cardiac morbidity and mortality more than amlodipine in hypertensive patients at high cardiovascular risk.

Methods 15245 patients, aged 50 years or older with treated or untreated hypertension and high risk of cardiac events participated in a randomised, double-blind, parallel-group comparison of therapy based on valsartan or amlodipine. Duration of treatment was event-driven and the trial lasted until at least 1450 patients had reached a primary endpoint, defined as a composite of cardiac mortality and morbidity. Patients from 31 countries were followed up for a mean of 42 years.

Findings Blood pressure was reduced by both treatments, but the effects of the amlodipine-based regimen were more pronounced, especially in the early period (blood pressure 40/21 mm Hg lower in amlodipine than valsartan group after 1 month; 15/13 mm Hg after 1 year; p<0001 between groups). The primary composite endpoint occurred in 810 patients in the valsartan group (106%, 255 per 1000 patient-years) and 789 in the amlodipine group (104%, 247 per 1000 patient-years; hazard ratio 104, 95% CI 094-115, p=049).

Interpretation The main outcome of cardiac disease did not differ between the treatment groups. Unequal reductions in blood pressure might account for differences between the groups in cause-specific outcomes. The findings emphasise the importance of prompt blood-pressure control in hypertensive patients at high cardiovascular risk.

Lancet 2004; 363: 2022-31. Published online June 14, 2004

See Commentary
Top

Introduction

Substantial benefits in prevention of major cardiovascular morbidity and mortality in high-risk populations have been reported with calcium antagonists1-3 and angiotensin-converting enzyme (ACE) inhibitors.4 However, large hypertension trials have failed to show significant differences between treatment regimens based on diuretics, blockers, calcium antagonists, ACE inhibitors, or alpha blockers.5-15 The LIFE study16 showed advantages for the angiotensin-receptor blocker losartan over the blocker atenolol in hypertensive patients with left ventricular hypertrophy, primarily a 25% reduction in strokes. Subsequently, the second National Australian Blood Pressure study17 reported fewer cardiovascular events in patients treated with ACE inhibitor compared with diuretics. Therefore, the issue of whether the mechanism of action of antihypertensive drugs might influence their clinical effect remains unresolved.

The Valsartan Antihypertensive Long-term Use Evaluation (VALUE) trial offered a further opportunity to test this hypothesis by comparing the effects of two contemporary agents. VALUE18-20 was designed to compare the effects of treatment regimens based on the angiotensin-receptor blocker valsartan or on the calcium antagonist amlodipine on cardiac morbidity and mortality in patients with essential hypertension and at high risk for cardiac disease. The study hypothesis was that for the same level of blood-pressure (BP) control, valsartan-based treatment would be superior to amlodipine-based treatment in reduction of cardiac morbidity and mortality. There is strong evidence that raised concentrations of angiotensin II are an independent risk factor for cardiac disease.21 Valsartan was expected to reduce cardiac morbidity beyond its BP-lowering effect. Amlodipine was chosen as comparator because it effectively lowers BP but has not been proven to have specific cardioprotective properties.10,15

The trial used a specific predefined algorithm dependent on age, risk, and disease factor to recruit a population of patients with hypertension at high risk of cardiac disease. In this article we report the main outcome results.
Top

Methods

Study design

VALUE was an investigator-designed, prospective, multinational, double-blind, randomised, active-controlled, parallel-group trial. The primary objective was, at the same level of achieved BP, to compare the long-term effects on the incidence of cardiac morbidity and mortality, of antihypertensive therapy started with once-daily valsartan or amlodipine, in hypertensive patients with high cardiovascular risk. The complete study design has been published.18

A computer-generated randomisation list was prepared centrally by the sponsor, using appropriate blocks and guaranteeing that in study centres patients were assigned to one of both treatment groups. The study medication was provided in externally indistinguishable capsules. Hydrochlorothiazide tablets were administered unblinded.

The trial protocol was approved by all involved ethics committees and the trial was undertaken in accordance with the Declaration of Helsinki. All patients gave written, informed consent. An independent data and safety monitoring board monitored safety. The executive committee had full access to the data, was responsible for the data analysis, and had full control over the right to publish. A statistician on the executive committee independently analysed data to validate and further explore the analyses done by statisticians employed by the sponsor.

Population and treatment

VALUE included patients 50 years or older, with treated or untreated hypertension at baseline and predefined combinations of cardiovascular risk factors and cardiovascular disease. Additional inclusion criteria were: men or women of any racial background, 50 years of age and older, and presence of cardiovascular risk factors or disease according to an algorithm based on age and sex.18

The qualifying risk factors were male sex, age older than 50 years, verified diabetes mellitus, current smoking, high total cholesterol, left ventricular hypertrophy by electrocardiogram, proteinuria on dipstick and raised serum creatinine between 150 and 265 mol/L (if >265 mol/L patients were judged to have severe renal failure and were excluded). The qualifying diseases were verified coronary disease, cerebrovascular disease or peripheral arterial occlusive disease, or left ventricular hypertrophy with strain pattern.

Exclusion criteria were: renal artery stenosis, pregnancy, acute myocardial infarction, percutaneous transluminal coronary angioplasty or coronary artery bypass graft within the past 3 months, clinically relevant valvular disease, cerebrovascular accident in the past 3 months, severe hepatic disease, severe chronic renal failure, congestive heart failure requiring ACE inhibitor therapy, patients on monotherapy with blockers for both coronary artery disease and hypertension.

Patients already receiving antihypertensive treatment discontinued taking previous drugs and were directly rolled over to one of the two VALUE arms starting with either valsartan 80 mg or amlodipine 5 mg, without a placebo run-in period (figure 1). For previously untreated patients, hypertension was defined as a mean sitting systolic BP between 160 and 210 mm Hg (inclusive), and a mean sitting diastolic BP of less than 115 mm Hg. The upper limit of BP for patients already on antihypertensive treatment was 210 and/or 115 mm Hg. Patients with well-controlled hypertension were also accepted into the study, and no lower BP limit was set for treated patients.

04art_4187_1

Figure 1: Study design

V=valsartan. A=amlodipine. HCTZ=hydrochlorothiazide.

Patients were followed up for 4-6 years with regular visits. Upward-titration of medication was implemented in five steps to reach a target BP of less than 140/90 mm Hg. Further antihypertensive drugs excluding angiotensin-receptor blockers could be given to achieve BP control. ACE inhibitors or calcium antagonists were allowed only if these drugs were clinically indicated for reasons other than hypertension. BP and heart rate were recorded 24 h post-dose with recommended BP-measurement techniques after patients had been seated for 5 min.

Outcome measures

The primary endpoint was time to first cardiac event (a composite of sudden cardiac death, fatal myocardial infarction, death during or after percutaneous coronary intervention or coronary artery bypass graft, death due to heart failure, and death associated with recent myocardial infarction on autopsy, heart failure requiring hospital management, non-fatal myocardial infarction, or emergency procedures to prevent myocardial infarction). Pre-specified secondary endpoints were fatal and non-fatal myocardial infarction, fatal and non-fatal heart failure, and fatal and non-fatal stroke. Analyses of all-cause mortality and new-onset diabetes were also prespecified.

When VALUE was designed, meta-analysis22 suggested that reduction of strokes entirely depended on the degree of BP reduction. Since we planned to achieve similar BP in both groups we did not expect to find any difference in strokes. Consequently, in this trial, strokes were categorised as secondary endpoints.

To detect new-onset diabetes (defined according to 1999 WHO criteria23) we first excluded all patients who at entry were diagnosed with diabetes, received anti-diabetic agents, or had abnormal glucose levels. In the remaining group, individual patient study forms and adverse events databases were monitored for new use of antidiabetic drugs and for newly reported diabetes. A blood chemistry report was mandatory at the end of the trial, and the diagnosis of new onset diabetes was made if the serum glucose concentration exceeded 78 mmol/L.

An endpoint committee, blinded to therapy allocation, reviewed the clinical records of all cardiovascular events reported by clinical centres and adjudicated according to the protocol criteria. If necessary, resolution was achieved by joint in-person reviews. The endpoint committee rejected 379 (19%) of submitted cardiac morbidity cases, 72 (12%) of cardiac mortality cases, and 314 (30%) of strokes. A diagnosis of congestive heart failure was confirmed if the patient met the predefined criteria used by the endpoint committee and an admission to hospital was required either for new onset or for management of chronic heart failure.

Routine laboratory tests were done by core laboratories. All electrocardiograms were assessed at two reading centres using standard parameters.24,25 Adverse experiences and prespecified safety parameters were monitored throughout the trial.

The study closure lasted from Sept 5 through Dec 5, 2003. During this period all patients were recalled for a final clinic visit or a final life status was obtained in patients who prematurely discontinued the study. The database was locked on March 26, 2004. Endpoints that occurred before the final clinic visit or Dec 5 were included in the primary analysis.

Statistical methods

The study was endpoint-driven; 1450 patients with primary event were required to provide 90% power to detect a 15% reduction in the primary endpoint rate from 125% to 1063% with 14 400 patients. All endpoints and BP values were analysed using the intention-to-treat approach.

Cox regression models were used to assess clinical events differences between treatment arms. Age, the presence of coronary heart disease, and the presence of left ventricular hypertrophy at baseline were used as a priori covariates to account for the effects of key risk predictors at baseline. Treatment effects were measured by hazard ratios and their 95% CIs based on Cox regression models. Event rates over time are presented as Kaplan-Meier curves. For analyses within time-specific intervals, odds ratios were calculated.

Only the time to the first cardiac event was considered in the composite primary endpoint. For secondary analyses, only the first event was counted in each category but a single patient could have multiple first events across all event categories. The safety population included all randomised patients who received at least one dose of the study medication. Differences between groups in frequency of adverse experiences were analysed with chi2 test. All tests were 2-sided and significance level was set at 5%.

Role of the funding source

The study was designed interactively between an advisory board (later the VALUE executive committee) and the sponsor. The sponsor managed the data and did all final analyses. The executive committee had full access to all data and the statistician of the executive committee independently verified results. The study chairman and the associate chairman prepared the first draft and the executive committee wrote the final version of the paper.
Top

Results

15313 eligible patients in 31 countries were randomised between September, 1997 and November, 1999. The two treatment groups were similar in terms of demographic characteristics, severity of hypertension, antihypertensive drug use before enrolment, and prevalence of coexisting cardiovascular conditions (table 1). 68 patients in nine centres were excluded because of good clinical practice deficiencies, and therefore 15245 randomised patients were included in the analysis. 11 centres prematurely closed their operation because of local circumstances, and 90 patients from these centres were included in the intention-to-treat analysis, although results were available only up to the date of the closure. No life-status could be obtained at study closure for 71 patients who withdrew consent to participate in the study. Only 90 patients (06%) were lost to follow-up (figure 2).


Valsartan Amlodipine
(n=7649) (n=7596)
Sex (number [%] women) 3240 (424%) 3228 (425%)
Age (years) 672 (821) 673 (81)
Body-mass index (kg/m2) 286 (51) 287 (50)
Systolic blood pressure (mm Hg) 1545 (190) 1548 (190)
Diastolic blood pressure (mm Hg) 874 (109) 876 (107)
Heart rate (beats per min) 723 (108) 725 (107)
Race
White 6821 (892%) 6796 (895%)
Black 325 (43%) 314 (41%)
Oriental 272 (36%) 261 (34%)
Other 231 (30%) 225 (30%)
Antihypertensive medication taken at
time of randomisation
Previously treated for hypertension 7088 (927%) 6989 (920%)
ACE inhibitor 3148 (413%) 3135 (414%)
Angiotensin-receptor blocker 812 (107%) 800 (106%)
alpha blockers 540 (71%) 495 (65%)
blocker 2496 (327%) 2551 (337%)
Calcium-channel antagonist 3181 (417%) 3048 (402%)
Diuretics as monotherapy 2047 (269%) 2020 (267%)
Fixed-dose diuretic combinations 686 (90%) 634 (84%)
Qualifying disease factors
Coronary heart disease 3490 (456%) 3491 (460%)
Peripheral arterial disease 1052 (138%) 1062 (140%)
Stroke or TIA 1513 (198%) 1501 (198%)
LVH with strain pattern* 454 (59%) 462 (61%)
Data are shown as numbers of patients (%) or mean (SD). TIA=transient ischaemic attack. LVH=left ventricular hypertrophy.*LVH including left bundle branch block.
Table 1: Baseline characteristics

04art_4187_2

Figure 2: Trial profile

Mean follow-up time was 42 years (SD 12 years, interquartile range [IQR] 40-49). The study accumulated 63 631 patient-years of follow-up. 5636 (737%) patients in the valsartan group and 5691 (749%) in the amlodipine group remained on blinded study therapy throughout the entire follow-up period. In none of the patients who discontinued the study was the code of the study drug broken. Most of these patients continued to return for clinic visits. The mean duration of exposure to study medication was 36 years (SD 17; IQR 28-43) in the valsartan-based group and 36 years (17; 28-43) in the amlodipine-based group. The proportion of patients receiving valsartan monotherapy as the last recorded study medication was significantly smaller than that of patients receiving amlodipine monotherapy, and a larger proportion of patients in the valsartan group received the highest dose of study drug plus hydrochlorothiazide plus other anti-hypertensive drugs than in the amlodipine group (table 2). The median daily doses were 1517 mg (IQR 832-1585) for valsartan and 85 mg (IQR 50-99) for amlodipine. When study drug interruptions were included, the median doses were 1493 mg (802-1585) and 82 mg (50-99), respectively.


Valsartan Amlodipine
Patients on study medication n=7649 n=7596
at primary endpoint including
stroke or at final visit for
patients without event
(ITT population)
Valsartan 80 mg or amlodipine 5 mg 1213 (159%) 1583 (208%)
Valsartan 160 mg or amlodipine 10 mg 852 (111%) 1105 (145%)
Valsartan 80 mg or amlodipine 159 (21%) 329 (43%)
5 mg plus HCTZ
Valsartan 160 mg or amlodipine 1719 (225%) 1481 (195%)
10 mg plus HCTZ
Other combinations or drugs 1758 (230%) 1279 (168%)
No study therapy* 1948 (255%) 1819 (239%)
Patients on concomitant therapy n=7622 n=7576
(safety population)
ACE inhibitors 1574 (207%) 1461 (193%)
alpha blockers 1856 (244%) 1385 (183%)
blockers 3656 (480%) 3295 (435%)
Diuretics as monotherapy 1023 (134%) 1137 (150%)
Diuretics as part of combination therapy 318 (42%) 319 (42%)
Statins 3553 (466%) 3516 (464%)
Aspirin 5570 (731%) 5505 (727%)
Data are number (%). ITT=intention-to-treat. HCTZ=hydrochlorothiazide. *Patients who did not have a primary event including stroke and permanently discontinued the study medication or patients who did not take the study medication during the trial or patients for whom the last study medication taken before the event or at final visit is not recorded.
Table 2: Antihypertensive and other medications in the study

At study end (72 months) or final visit the mean BP was 1393/792 mm Hg (SD 176/98) with valsartan-based regimens and 1375/777 mm Hg (150/90) with amlodipine-based regimens (BP reduction from baseline until the study end 152/82 and 173/99 mm Hg in the valsartan and amlodipine arms, respectively; p<00001 between groups; figure 3). After 1 month of treatment, BP in the amlodipine group was substantially (40/21 mm Hg) lower than in the valsartan group. At 6 months the difference decreased to 21/16 mm Hg. Thereafter, the average BP difference was about 20/16 mm Hg. From the sixth month until the end of the study BP decreased in both treatment groups: valsartan-based regimens by 33/26 mm Hg, and amlodipine-based regimens by 30/25 mm Hg. BP control was achieved in 4392 (58%) of patients on valsartan and 4793 (64%) of those on amlodipine for systolic pressure (<140 mm Hg) and in 6652 (88%) and 6940 (92%), respectively, for diastolic pressure (<90 mm Hg). The target BP (both <140 mm Hg systolic and <90 mm Hg diastolic) was achieved in 4274 (56%) patients in the valsartan group and 4694 (62%) in the amlodipine group.

04art_4187_3

Figure 3: Systolic and diastolic BP and differences (valsartan-amlodipine) in BP between treatment groups during follow-up

BP difference between the two groups was significant (<0000) at every time point. Overall differences in systolic BP=223 mm Hg (SE 018); overall differences in diastolic BP 159 mm Hg (SE 011). SDs of average BP at various time points in the amlodipine and valsartan groups are shown in table 4.

Major findings are shown in table 3. The frequency of the main outcome, a composite of cardiac mortality and morbidity, did not differ significantly between the two treatment groups. Of the secondary outcomes, myocardial infarction was significantly (p=002) more frequent in the valsartan group, but rates of heart-failure admissions and stroke (fatal and non-fatal) were similar between the two groups. Rates of total cardiovascular events including stroke were 1074 in the valsartan versus 1021 in the amlodipine group (hazard ratio 106, 95% CI 098-116, p=017). Rates of all-cause death did not differ significantly between the groups. New-onset diabetes arose in significantly fewer patients on valsartan than on amlodipine (p<00001).


Valsartan (n=7649) Amlodipine (n=7596) Hazard ratio p
n (%) Per 1000 patient years n (%) Per 1000 patient years (95% CI)
Primary composite 810 (106%) 255 789 (104%) 247 104 (094-115) 049
Cardiac mortality 304 (40%) 92 304 (40%) 92 101(086-118) 090
Cardiac morbidity 586 (77%) 184 578 (76%) 181 102 (091-115) 071
Myocardial infarction* 369 (48%) 114 313 (41%) 96 119 (102-138) 002
Heart failure* 354 (46%) 110 400 (53%) 124 089 (077-103) 012
Stroke* 322 (42%) 100 281 (37%) 87 115 (098-135) 008
All-cause death 841 (110%) 256 818 (108%) 248 104 (094-114) 045
New onset diabetes 690 (131%) 321 845 (164%) 411 077 (069-086) <00001
*Fatal and non-fatal. Odds ratio. Incidence rates are based on patients without diabetes at baseline.
Table 3: Endpoints (first time occurrence in each category)

The Kaplan-Meier curves for the primary and secondary endpoints are shown in figures 4 and 5. Figure 6 and table 4 show BP differences and odds ratios for time periods of the trial for primary and secondary endpoints. Higher odds ratios in favour of amlodipine were noted for all endpoints during the first 6 months, when BP differences between the treatment groups were greatest. In the following months, there was an attenuation in odds ratios. For heart-failure hospital admission there was a trend in favour of valsartan during the last 4 years.

04art_4187_4

Figure 4: Kaplan Meier curves for primary composite endpoint

04art_4187_5

Figure 5: Kaplan Meier curves for secondary endpoints and all-cause death

04art_4187_6

Figure 6: Differences in BP between treatment groups with odds ratios for primary endpoint, secondary endpoints, and all-cause death during consecutive time periods in the study

Bars show 95% CI.


Mean blood pressure (SD)* Time-specific interval odds ratios (95% CIs)
Visit Valsartan Amlodipine Primary endpoint Stroke Myocardial infarction Heart failure All-cause mortality
Baseline 1545 (190) 1548 (190)
874 (109) 876 (107)
0-3 months 1492 (195) 1454 (161) 178 (122-260) 194 (110-342) 174 (094-322) 118 (070-200) 284 (151-534)
848 (104) 826 (93)
3-6 months 1432 (168) 1409 (143) 132 (089-196) 150 (082-272) 147 (076-283) 129 (073-228) 112 (070-181)
821 (93) 804 (86)
12 months 1423 (169) 1403 (144) 093 (069-126) 118 (071-195) 119 (074-190) 078 (049-124) 130 (093-183)
817 (93) 802 (85)
24 months 1400 (162) 1382 (138) 099 (080-124) 103 (073-145) 130 (094-180) 109 (078-150) 098 (078-123)
804 (90) 792 (86)
36 months 1387 (161) 1372 (135) 097 (078-119) 118 (083-168) 096 (069-134) 085 (063-116) 108 (088-133)
795 (92) 781 (86)
48 months 1379 (156) 1366 (136) 093 (0745-115) 113 (079-161) 120 (086-167) 069 (051-094) 095 (078-115)
788 (90) 775 (86)
Study end 1393 (176) 1375 (150) 098 (074-129) 075 (045-125) 107 (072-159) 081 (053-122) 087 (070-109)
792 (98) 777 (90)
*Upper values systolic, lower values diastolic.
Table 4: Blood pressure and odds ratios throughout the study

Both treatment strategies were well tolerated with few severe adverse events (table 5). The most frequently reported adverse event--oedema, including peripheral oedema--was twice as common in amlodipine-treated patients as in valsartan-treated patients. Hypokalaemia was more frequent in the amlodipine group. However, dizziness, headache, and diarrhoea were more frequently reported in patients on valsartan-based regimens, although the frequency of these events was low. Angina was reported more frequently in the valsartan-treated group. 911 patients in the valsartan group (119%) and 983 (129%) in the amlodipine group discontinued treatment because of adverse events. Descriptive laboratory values at baseline and end of study are reported in table 6.


Valsartan Amlodipine p
(n=7622) (n=7576)
Pre-specified adverse events
Peripheral oedema 1135 (149%) 2492 (329%) <00001
Dizziness 1257 (165%) 1083 (143%) <00001
Headache 1120 (147%) 947 (125%) <00001
Fatigue 739 (97%) 674 (89%) 00750
Additional common adverse events
Diarrhoea* 670 (88%) 515 (68%) <00001
Angina pectoris* 708 (93%) 485 (64%) <00001
Angina pectoris 335 (44%) 234 (31%) <00001
Oedema other* 243 (32%) 462 (61%) <00001
Hypokalaemia* 266 (35%) 469 (62%) <00001
Atrial fibrillation 182 (24%) 151 (20%) 01197
Syncope 129 (17%) 75 (10%) <00001
*With an incidence >3% and a difference between treatment groups >1%. Reported as serious.
Table 5: Adverse events


Top

Discussion

The VALUE trial was designed to test the hypothesis that, for the same level of BP control, a valsartan-based regimen would be better than an amlodipine-based regimen for cardioprotection in patients with hypertension. For the primary composite endpoint of cardiac morbidity and mortality and for all-cause mortality, no significant differences were noted between the treatment groups. The amlodipine group had a significantly lower incidence of myocardial infarction and higher rate of new-onset diabetes than in the valsartan group. The most consistent and statistically significant difference between the groups was in BP control: amlodipine-based therapy was significantly more efficacious in reducing BP, especially during the early phases of treatment. The differences in BP between the drug regimens were 40/21, 43/25, 30/20, 24/17, 21/16 and 20/15 mm Hg after 1, 2, 3, 4, 6, and 12 months, respectively, and stabilised at about 15/13 mm Hg thereafter.

Disparity in BP control in the comparator groups in VALUE confounds the interpretation of the results. Failure to achieve equivalent BP levels, particularly for systolic BP, in the treatment arms has been a frequent feature of comparative outcome trials of antihypertensive therapy. Favourable BP trends in particular treatment groups might have amplified or explained the apparent outcome benefits in some trials4,7,10,26-28 and masked differences in others.5,8,26 A meta-regression analysis concluded that the results of contemporary outcome trials can be attributed mainly to observed differences in systolic BP,14 which in some instances might reflect chosen doses of study drugs. The lack of BP comparability at the end of a blinded study largely reflects the limited range of available drug dosage. Usable doses are further narrowed by regulatory differences in international studies. When VALUE was conceived, a dose range of 80-160 mg of valsartan was approved worldwide for treatment of hypertension. A linear BP dose-response relation was documented for valsartan in the range of 40-160 mg without any signs of a plateau29 and it stood to reason that in VALUE higher doses would be useful. However, the 320 mg dose which has been used with success in outcome trials seeking registration for new indications (heart failure and in left-ventricular dysfunction30,31), was not authorised for use in hypertension.

Total composite cardiac morbidity and mortality was not different between the two VALUE treatment arms. Significantly more myocardial infarctions were seen in the valsartan-based treatment group. However, in the high coronary risk population in VALUE, 79% of the excess of infarctions on valsartan occurred during the first 2 years of the study. Thereafter, when the BP of the two groups was closer, the odds ratio trends for myocardial infarction were less consistent. Early22 and later15 placebo-controlled trials showed that BP lowering reduces the incidence of coronary heart disease endpoints to the same degree, regardless of the type of drug used. However, the same degree of BP lowering resulted in a substantially lesser reduction of myocardial infarction compared with the reduction of strokes. This observation supported the notion that something other than BP might be involved in the excessive coronary risk in hypertension. This belief, in turn, fuelled hopes that new drugs might offer better protection against myocardial infarction. Published findings failed to confirm such additional effects. In direct drug comparisons, diuretics, blockers, ACE inhibitors,5,6,10,17 and calcium antagonists at the doses used6,8-12,32 had equal effects. Finally, recent findings showed no difference in coronary heart disease between angiotensin-receptor blockers16,24 and comparator groups. In VALUE, as in previous studies, the benefit of BP lowering was clearer for strokes than for myocardial infarction. Most of the excess stroke in the valsartan group appeared in the first year when the difference in BP between the two groups was largest. However, a decrease of the excess myocardial infarction was seen a year later than for strokes. We do not know whether this finding means that it took a longer time for vascular healing to occur, or whether it reflects some pressure-unrelated differences between the drugs.

In the second half of VALUE there was a persistent trend for fewer admissions for heart-failure in the valsartan group but the overall difference did not reach statistical significance. Patients on calcium antagonists are prone to develop drug-related peripheral oedema, which could be mistaken for heart failure. In VALUE, the validity of the diagnosis of heart failure was adjudicated by a panel of experts. In no case was the diagnosis of heart failure made solely on the basis of ankle oedema, which was reported in 2179 patients in the amlodipine group, whereas heart failure was diagnosed in only 400 patients.

A meta-analysis of antihypertensive trials14 suggested a reduction in heart failure favouring drugs which block the renin-angiotensin system compared with other drugs, including calcium antagonists. Prolonged use of enalapril in human hypertension reduces, whereas amlodipine increases, sympathetic nervous tone.33 It is speculated that such radically different physiological responses to BP lowering might lead to different long-term cardiovascular outcomes. Although the difference did not reach statistical significance, the steady trend for greater heart failure reduction with valsartan-based regimens in VALUE is consistent with our original hypothesis and with published findings.

In VALUE, stroke incidence was lower in the amlodipine group than in the valsartan group. Compared with other antihypertensives, greater reduction in stroke risk has been reported with calcium antagonists in some6,8,10,12 but not all studies.9 Meta-analyses14,15 showed an overall greater reduction in stroke with calcium antagonists. However, across a wide range of studies, including those with calcium antagonists, the incidence of stroke seems to be directly related to the observed differences in BP between active drugs and placebo, between more or less intensive therapy, or between different antihypertensive agents.14

In the LIFE study,16 losartan-based therapy was better than atenolol-based therapy in reducing strokes, despite almost identical BP control. However, it cannot be determined whether this reduction in stroke reflected only positive effects of angiotensin-receptor blockers or whether negative vascular effects of the blocker contributed.34 In the SCOPE trial,26 substantial BP differences between the study groups might largely explain the observed stroke reduction in the candesartan arm. It has been suggested14 that even small reductions in BP might be important in stroke reduction. The time relationship of excess strokes in the valsartan group of VALUE can be best explained by between-group differences in BP, which were largest in the first year. 63% of the entire observed excess of strokes occurred in the first 6 months, and this value grew to 76% at the end of the first year.

Control of BP at the end of VALUE largely met current standards.35-37 At the end of the study, good control of BP had been achieved in both treatment groups.

The incidence of new-onset diabetes in VALUE was significantly lower with valsartan-based than with amlodipine-based regimens. Compared with diuretics or blockers, a reduction of new-onset diabetes has been seen with ACE inhibitors,4,5, 10 calcium antagonists,9,10 and with angiotensin-receptor blockers.6,26 Diuretics and blockers each negatively affect glucose balance, whereas ACE inhibitors and calcium antagonists are thought to be metabolically neutral. In VALUE's comparison of a calcium antagonist and an angiotensin-receptor blocker, the 23% reduction of new-onset diabetes with valsartan suggests an active positive effect of this drug on long-term glucose metabolism. A similar reduction was seen with lisinopril compared with amlodipine in ALLHAT,10 suggesting that this effect might be related to blockade of biological effects of angiotensin II.

Diabetes greatly increases the cardiovascular consequences of hypertension. In high-risk patients, an immediate benefit of BP lowering could override long-term negative effects of diabetes induced by diuretics and blockers. However, even uncomplicated hypertension is frequently associated with insulin resistance.38 Committing such a large population of patients to decades of treatment with drugs that increase total cardiovascular risk seems illogical. At a time when there is a pandemic of type 2 diabetes, these findings from VALUE are especially relevant.

Patients in each treatment group of VALUE had few adverse effects. Oedema was more frequent and angina was less common in the amlodipine group than in the valsartan group, as might be expected from amlodipine's pharmacological profile. Some of the less common adverse events were more often reported in patients randomised to valsartan. This finding may appear to contradict the general opinion of the placebo-like tolerability of angiotensin-receptor blockers.39 However, since BP was less well-controlled in the valsartan arm, more non-study drugs for hypertension were used in these patients, which might account for the observed adverse effect profiles, bearing in mind that in studies like VALUE, treatment regimens rather than individual drugs are compared.

The findings of VALUE may provide important, pragmatic lessons about the design, conduct, and analysis of future outcome trials in hypertension. To further investigate these issues, additional analyses have been undertaken.40 The results of the trial could also give new insights into the clinical importance of the rate of achieving BP control--the findings suggest that recommended BP goals need to be reached within a relatively short time (weeks rather than months), at least in patients with hypertension who are at high cardiovascular risk. Furthermore, the results draw attention to the clinical relevance of apparently minor differences in BP within the high-to-normal range. Acheiving adequate blood-pressure control in high-risk patients will often require combination therapy from the outset.35,36

Lancet 2004; 363: 2022-31. Published online June 14, 2004 http://image.thelancet.com/extras/04art4187web.pdf

VALUE committees

Executive committee--Stevo Julius (Chair, USA), Sverre E Kjeldsen (Associate Chair, Norway), John H Laragh (USA), Michael A Weber (USA), Hans R Brunner (Switzerland), Gordon McInnes (UK), Alberto Zanchetti (Italy), Anthony Schork (USA), Lennart Hansson (Sweden).

Steering committee-- Felipe Martinez (Argentina), John Amerena (Australia), Dieter Magometschnigg (Austria), Jean-Paul Degaute (Belgium), Wille Oigman (Brazil), Pierre Larochelle (Canada), Jun Ren Zhu (China), Jiri Widimsky (Czech Republic), Ole Lederballe Pedersen (Denmark and Iceland), Silja Majahalme (Finland), Xavier Girerd (France), Roland Schmieder (Germany), Kostantinos Siamopoulos (Greece), Bela Herczeg (Hungary), Faustinus P Rudyatmoko (Indonesia), Ian Graham (Ireland), Reuven Viskoper (Israel), Giuseppe Mancia (Italy), Cesar Calvo-Vargas (Mexico), Nicolaas J Holwerda (Netherlands), Morten Rostrup, yvind Strset (Norway), Andrezej Cieslinski (Poland), Ricardo Seabra Gomes (Portugal), Janna Kobalava (Russia), Ivan Balazovjech (Slovak Republic), Graham Cassel (South Africa), Antonio Coca (Spain), Edouard Battegay (Switzerland), Nevres Koylan (Turkey), Thomas McDonald (UK), Kenneth Jamerson (USA).

Endpoint committee--Luis M Ruilope (Chair, Spain), Gregory Albers (USA), William Parmley (USA), Myron H Weinberger (USA), Vivencio Barrios (Spain), Per Omvik (Norway), Enrico Agabiti Rosei (Italy), Svend Strandgaard (Denmark), Arie J Man in't Veld (Belgium).

Endpoint co-ordinating centre (Madrid, Spain)--Ana Garia de Castro (medical back-up), Josefa Navarro, Alexandra Rissmann, Pilar Martinez Gutierrez, Isabel Martinez Gutierrez.

Data and safety monitoring board-- Stephen MacMahon (Chair, Australia), Thomas Fleming (USA), Henry R Black (USA), Peter Sleight (UK), Paul Gallo (Novartis East Hanover, NJ, USA.

Operations Committee--Stevo Julius (USA), Sverre E Kjeldsen (Norway), Tsushung Hua (Novartis East Hanover, NJ, USA), Beverly Smith (Novartis East Hanover, NJ, USA), Deborah James (Novartis East Hanover, NJ, USA), Francis Plat (Novartis Basel, Switzerland), Steffan Ekman (Novartis Basel, Switzerland), Patrizia Kobi (Novartis Basel, Switzerland).

VALUE investigators

Argentina --F Martinez, C Borrego, L Brandani, R Lopez Santi, E Kushnir, J Gagliardi, F Margulis, N Vita, J Vazquez, A Villamil, D Piskorz, E Paolasso, E Faras, M Arnolt, C Bellido, M Marin, J J Fuselli.

Australia--L Howes, J Karrasch, J Chapman, H Krum, J Amerena, B Jackson, M Suranyi, J Hammond, J Horowitz, A Tonkin, M West, F Lepre.

Austria-- D Magometschnigg, Th Perger, A Windsor-Topolsky, D Klinger, R Wegmann, M Sabeti, D Brandt, P Pavek, H Nobis, B Eber, P Fitscha.

Belgium--P van der Niepen, J Vernijns, D de Raedemaeker, G Decadt, H Carlier, D van Troyen, Ph de Winter, G Watt, G Mehuys, Ph Exelmans, L Peremans, J Wens, R Eykerman, R Leliaert, K Steylaerts, J Jespers, H van Aerde, W Denier, P Heremans, D van Mieghem, F Vrancken, D Vanderweerd, A Schraepen, J Delbeke, X Warling, G Hoogmartens, M Destino, R Deperon, E Mievis, J C Stolear, P Vrins, B de Clercq, C van Esch, R Martens, R Chanteux, M Veevaete, K Demeulemeester, G Schraepen, K Cornelli, W van Pelt, S van Bylen.

Brazil--W Oigman, D Armaganijan, E Francischetti, P C Veiga Jardim, D Mion, F Nobre, A B Ribeiro, J M Ribeiro, J C Rocha, G Soares Feitosa, R Franco, E Moacyr Krieger.

Canada--M Alexander, J Bdard, G Hoag, H S Conter, R D Feldman, M Khurana, R Bessoudo, V Pichette, Ch Lai, A V A Lalani, M R Lebel, J H S Li, J H Lenis, P Nguyen, A Miller, B J Barrett, M G Myers, S Finkelstein, B Melbourne, A Bell, J Hopkins, S Tobe, H Rudner, I Siegel, R Leader, J Nichols, S Kanani, G Fullerton, K Phillips, S Arndt, P Nantel, Y Bastien, F E Raimondo, M N Robitaille, L Roy, F St-Maurice, G Tremblay, G Tremblay, D O'Keefe, F Leenen, V Martinho, R Vexler, J Biro, R Hollands, L Rossman, M A Mucha, H Martinho, R H Ting, E R Brankston, J A Stone, W Booth, D Dattani, B C Nathoo, K Papp.

China--N-S Cai, W-H Qi, W-H Fan, Y-Z Rong, S-W Wang, Ch-B Xu, X-S Wu, J-X Guo, L-H Shen, D Hu.

Czech Republic--A Kadleckova & V Smejkalova, R Cifkova, J Widimsky, J Peleska, K Macek, J Rybka, J Toman, H Nemcova, T Sladkova, P Jansky, A Martinek.

Denmark and Iceland--O Pedersen, A Hoeegholm, T Svendsen, P Hildebrandt, Th Fogh-Andersen, T Sommer, Ch Meisler, J Ostergaard, E Lassen, S Husted, J Praest, M Scheibel, B Larsen, M Lessing, K Lawaetz, J-J Frifeldt, G Thorgeirsson, E Sigurdsson.

Finland--M Kotila, R Laitinen, R Hyttinen, J Ulkuniemi, E Hussi, V Moilanen, M Nikkil, A Patala, M Saksa, P Kunelius, U Laisi, P Risnen, M Pellinen, V Tuunanen, J Inkovaara, R Grnfors, T Hakamki, L Koivunen, E Jukka, T Jskelinen, M Kuusela, M Linna, E Ruosteenoja, P-E Wingren, A Jounela, K Koskinen, K Ala-Kaila, I Kantola, O Sallinen, J Tuomilehto, V Sillanp, H Urpala, A Latva-Nevala, P Kettunen.

France--A Boye, G Faugas, A El Sawy, J Marty, J-P Becq, E de Sainte Lorette, A Campagne, L Boucher, S Musso, F Spilthooren, L Martinez, J-C Gall, B Chagnoux, H-W Spiess, F Liotard, J Sicard, C Lafont, J Rebot, P Lafont, C Magnani, E Pace, J P Brul, R Pradeau, S Mestiri, G Etchegaray, Th Latte, Ch Copere.

Germany--G Hegner, H Daniel, W Weil, K Weyland, R Schneider, W Englisch, H Gath, W Grosskopf, D Freise, H Bustami, S Prenninger, A Gruenerbel, A Halbach, J Adler, G Lehmann, S Schliederer, G Kraus, R Toele, H Moessmer, W Schlauch, E Eissfeller, J Gatz, Ch Schroeter, F Trautmann, K Hausdorf, A Haack, I Simon-Wagner, W Wagner, R Galmbacher, D Hollatz, R Lauerer, H Hauer, G Rehling, R Schorten, R von Knethen, E Voelker, S Gessner, H Fissan, G Krause, E Blum, H Seibert, N Purr, E Schmidt-Rauch, A Gierisch, G Bergmaier, M Lohnstein, W Rechl, G Stumpf, F Schreibmueller, A Thomsen, H Schuetz, E Speck, Th Drescher, Th Remold, W-D Seiler, P Angersbach, K Thon, C Slotty, A Knossalla, H Grueter-Degering, A Link, I Landgraf, M Hintereicher, H-D Bader, B Baumann, M Wieder, H Ziegenhorn, M Kuetemeyer, F Walther, W Trs, E Rakowski, A Schreckenberg, K-D Spreng, P Brommer, M Ziegler, S Kolb, E Homsy, H Renner, N Schoell, W Stuermer, U Zimmermann, R Janzen, P Mayr, B Mueller, M Kaiser, S Mieke, M Tesdorpf, R Cyprian, M Uellner, S Jakob, Ch Neuhaus, M Bill, A Moeller, W Rusche, H Finkernagel, M Franke, U A Fritze, P Gnisa, M Schindler, M Mansfeld, Ch Nies, E Radermacher, A Sterzing, I Urlea-Schoen, D Wehrmann, J Weidemann, H Wieswedel, W Zingler, R Kraft, P Kirschner, M Roevenich, H-J Bremermann, U Gauss, J Motz, M Panijel, K-U Walther, P Weinholz, H Hesse, P Faust, Ch Klein, R Franz, H-J Otto, J Kaczynski, G Orlovius, R Ruther, A Germann, W Schilling, N Kokott, R Rummel.

Greece--N Papagalanis, A Achimastos, K Siamopoulus, S Raptis, A Manolis.

Hungary--B Herczeg, J Csillag, F Gonda, G Kurta, E Berkesi, K Simon, J Tenczer, P Valyi, K Zamolyi.

Indonesia--D Soemantri, S Suryawati.

Ireland--P Mangal, A O'Reilly, L Hamilton, A Byrne, T Field, P Keogh, J Craig, A Jordan, I Graham, J Feely.

Israel--R Viskoper, Sh Oren, E Grossman, R Zimlichmann, U Gafter, J Weissgarten, E Paran, Y Beigel, N Stern, A Iania, Sh Keidar, O Hussein, T Rosenthal, E Shveydel, Ch Josefy, H Flandra, G Katz.

Italy--A Zanchetti, G Mancia, E Ambrosioni, B Trimarco, A Pessina, A Rappelli, A Salvetti, G Cerasola, R Fogari, Eugenia Marchesi, M Campanini, L Guarina, G Ponti, A Venco, A Capucci, A Bertuzzi, G B Ambrosio, C Cappelletti, G Seghieri, R Nami, A Mezzetti, R Canova, M Giardinieri, F Renco, V Capuano, N Frisina, A La Rosa, S Mangiameli, S Mansueto, A Lechi, E Rossi, D Policicchio, C Chieffo, A di Taranto, I de Luca, G Pinna, R Casati, D Mazzoleni, L Muiesan, L Mos, A Achilli, A Santucci, F Pellegrini, G Cesari, R Ansuini, E Grasso, G Leonetti, V. Fusi, E Malacco, G Grillo, F Bandiera, F Lumene, P Mameli, G de Venuto, P Maiolino, A D'Avanzo, A U Ferrari, R Griffo, F Magliari, G Ignone, M Marchisio, S Scardi, C Martines, G P Carboni, V Ceci, V Russo, G Vergara, G Maiorano, R M Polimeni, L Malatino, A Bajardi, A Sanna, N A Vari, G Villa, W Piubello, C Rostagno, G Marasco, P Pieri, G Masotti, F Locatelli, F Portaluppi, A Baldini, D Panuccio, E de Micheli, C de Matteis, E Laconi, L Veglia.

Mexico--C Calvo, J Parra, E Cardona, R Rentara, R Mendirichaga, L A Elizondo, J Verdejo, E Exaire, J Navarro, L Lepe, E Meaney, A Rubio, L Alcocer.

Netherlands--P J P C van den Bergh, J Kragten, P van Rossum, A J M Boermans, A De Jong, A Vluggen, F de Heer, A Wester, D Poldermans, G J M van Doesburg, R J Erdtsieck, A A M J Hollander, N J Holwerda, J G S Breed, P D M Coenen, N H Silbermann, A S M Dofferhoff, A Dees, J L Posma, C E H Siegert, M E Ouwehand, F A A M Vermetten, P L Rensma, P F M Koch, J Veerman, W A de Backer, C P Buiks, H Hlscher, G F W Hoogslag, H J A M Fransen, W L Feis, H Prak, H Ferguson, S M Handgraaf, C G J van den Beld, W O Glas, G J M van Loenen, C J G Bijman, A Veerman, C P Schapers - de Bruin, L F H van Valkenburg, C G J van den Beld, J J M van der Werf, E J C P Boerop, L H J van Kempen.

Norway--T O Klemsdal, E P Saltvedt, S Toft, E Hagen, K Risberg, E L Werner, J A Staurset, L J Lysen, O C Fiane, J T Lunke, K R Lund, G E D'Angelo, B Vig, E Skiegstad, O H Karoliussen, P A Stenberg, T Endresen, P-E Hafstad, A Red, S Nasrala, K Valnes, T Larsen, R Jovic, A Holtestaul, M Fagan, B-I Embraa, O Schamaun, T Jacobsen, K-E Langaker, H M Jonsbu, Z Gorski, A Vedvik.

Poland--A Cieslinski, Z Gaciong, D Wojciechowski, E Szmatloch, M Kazmirowicz, B Halawa, K Jaworska, E Nartowicz, A Stochmal.

Portugal--A Brando, J Almeida, F de Freitas, J M Nascimento, G M Pego, F M Tavares, T Rodrigues, M J Pais, M E Silva, F L Nobre, M Carrageta, A Caeiro, J Linder, L Semedo, M Carvalho

Russia--I Chazova, S Moyseev, L Lazebnik, B Sidorenko, Y Belousov, Y Karpov, L Olbinskaya, V Konstantinov.

Slovakia--I Balazovjech, J Bulas, K Benova, L Ruffini, V Zubek, P Jonas.

South Africa--R Bhoola, G Cassel, J A Jacovides, R Lamparelli, R Moodley, A S Ramdass, M Seeber, R Spammer, J H Jansen van Rensburg, F Bester, H Makan, V Singh.

Spain--B Gil Extremera, M D Fernandez Cacao, E Abad Paniagua, J G Puig, C Campo, A Maiques, J Catalan, J E Forcada Lozano, M Gorostidi, J Guerediaga, J H Perez, J Olivan, C Calvo, P Aranda, J G Alegria, J C Lopez Peral, L Comas, A Ledesma, A Coca, J Sobrino.

Switzerland--E Battegay, Th Grueninger, D Pewsner, F Walser, M Senn, M Diethelm, G Abetel, P Willi, H-J Bopp, S Guggi, P Willimann, W Graf, Ch Galland, D Wirz, H Oechslin, A J Fojtu, D von Muralt, P Bachmann, K Wenger.

Turkey--N Koylan, A Canberk, I Basar, S Karcier, R Onder, E Acarturk, N Deger, Y Sagliker.

UK--G McInnes, J Hamling, K Wells, A Middleton, P Abbott, G Jackson, A Cowie, J Hole, J Chapman, Th McDonald, K Smales, N Gough, J Tilley, A Wijnberg, P Jackson, N Hati-Kakoty, P S Lewis, L J Millar, M B Chaudri, N Spyrou, G McLaren, M Clamp, J P Vernon, J Purvis, C Jones, K O'Shaughnessy, B Silvert, J Webster, P Edwards, P Davies, Sh Bassi, N Patel, D Keating.

USA--A Gradman, R Dolor, R Lipetz, S Rosenblatt, A Bastien, D Sugimoto, M Fine, H Freeman Harris, J Lewis, F Mazzone, W Zigrang, W Elliott, J Anderson, M Goldberg, S Spitalewitz, S Oparil, J Ryder Benz, Ch Herring, A Steljes, W Dachman, T Fagan, J Gorwit, G Frivold, E Kim, R Jones, M Kates, J LaFata, W Waider, R Wright, S Satterfield, H Browne, E Busick, L Corn, M Hagan, R Beach, M DeBruin, M Velasquez, P Vyas, G Habib, R Hippert, W Larson, M Koren, F Kushner, S Lewis, M Wofford, M Litt, J Chin, D Miller, M Nelson, Norene, J Norton, D Owens, J Pool, R Rhoades, J Rubino, B Samuels, Sh Sharma, R Jones, W Th Steudel, P Tanzer, J Vazquez-Bauza, J Warren, R Cottiero, P Ziajka, G Collins, G Lamas, D Wombolt, H Fendley, R Castaldo, B Kerzner, W McGuinn, J Corbelli, A Pacifico, Ch Nwasuruba, T Poling, D Edmundowicz, M Richards, S Rosansky, M Strauss, M Wilson, P Lozano, W Friesen, G Garza, R Gove, J LaSalle, Ch Martin, E Roth, M Rothkopf, R Crock, I Sachmechi, D Schumacher, K Vesio, Ch Schulman, H Siragy, J Wright, G Porter, M Ryan, G Canaris, K Tuttle, R Bansal, R Gibbs, H B Karunaratne, F Messerli, A Miller, L Wright, P Wallach, M Link, M Pohl, P Ogden, H Punzi, M Weerasinghe, R Hillert, M Shalek, L Dworkin, M Block, R Ashar, E Gold, U Thadani, J Cook, J Henry, R Oliveros, J Davidson, T Story, J Holtzman, M Zervos, S Gappy, M Nuss, A Woolley, D Sica, S Ellahham, P Arcuri, A Hordes, M McCartney, D Curatola, H Koelsch, J Wadleigh, M Conway, L Kirby, R Albery, A Chapman, S Braden, F Maggiacomo, L Riley, E Saunders, D Brandon, Ch Chen, Ch Lui, C V Manion, J Marino, N Kassman, M Schatz, S Markunas, S Schmidt, D Bhandari, T Holcomb, J Goldstein, M Antonishen, R Watson, D Hunninghake, R Berkowitz, D McCluskey, M Galler, R Zusman, S Blumenthal, W Williams, G Wilhoit, W Whibbs, L Smith, W Browning, P Cacchione, D Kruszewski, Ch Bounds, W Betz, D Allen, C Dujovne, K Winfield, N Gupta, M Munger, J Soberman, S Carlson, B Hannaway, W Post, J Kirstein, F McBarron, T Hack, S Barrick, K Rasikas, R Spees, B Egan, J Basile, A Weder, J Ferguson, D Vande Merwe, R Kipperman, S Turitzin, K Ward, T Truitt, S Noor Rahman, W H Haught, S Greco, J Milburn, J Reed, C Grossman, R Williams, M Gao-Albus, A Rojas, J Vacek, W R Taylor, C West Jacocks, L Rudolph, L Miller, M Tanenbaum, M Newton, S Videlefsky, B Jacksn, M Topiel, T Gaardner, P Kotha, G Mahan, N Awan, S Worley, S Wagner, A Pitterman, S Miaskiewicz, M Beard, R Erny, R Bellinger, R Harizi, S Dhanjal, A DeGraff, J DiPoala, B Singh, V Campese, M Hale, G Williams, J Thwainey, J H Pratt, M Zikra, A Marcadis.

Novartis Pharmaceuticals--Medical Director: F Plat; Project Leaders: S Ekman, B Smith; Statisticians: L Mitchell, T Hua, D Bach; Programmer: L Designee; Clinical Team: M Aegerter, J Barton-Caruso, N Bynes, J Danyluk, R Hirt, D James, P Kobi, A Meier, M Meyers, B Reimund, C Salemi

Conflict of interest statement

S Julius, S E Kjeldsen, M Weber, H R Brunner, J Laragh, G T McInnes, and A Zanchetti have served as consultants or received grants from Novartis and other major pharmaceutical companies. S Ekman, T Hua, L Mitchell, F Plat, and B Smith are Novartis employees.

Acknowledgments

The trial was funded by an unrestricted grant from Novartis Pharma AG. We thank P Stolt (Novartis, Switzerland) for his valuable help. The presentation of data is the intellectual property of the VALUE executive committees and the manuscript has been reviewed by Novartis. All members of the VALUE executive committee contributed to the writing of this paper.
Top

References

1 Gong L, Zhang W, Zhu Y, et al. Shanghai trial of nifedipine in the elderly (STONE).  J Hypertens  1996; 14: 1237-45. [PubMed]

2 Staessen JA, Fagard T, Thijs L, et al. Randomised double-blind comparison of placebo and active treatment for older patients with isolated systolic hypertension. Lancet  1997; 350: 757-64. [Text]

3 Liu L, Wang JG, Gong L, Liu G, Staessen JA, for the Systolic Hypertension in China (Syst-China) Collaborative Group. Comparison of active treatment and placebo in older Chinese patients with isolated systolic hypertension.  J Hypertens  1998; 16: 1823-29. [PubMed]

4 The Heart Outcomes Prevention Evaluation Study Investigators. Effects of angiotensin-converting-enzyme inhibitor, ramipril, on cardiovascular events in high-risk patients.  N Engl J Med  2000; 342: 145-53. [PubMed]

5 Hansson L, Lindholm LH, Niskanen L, et al. Effect of angiotensin-converting-enzyme inhibition compared with conventional therapy on cardiovascular morbidity and mortality in hypertension: the Captopril Prevention Project (CAPPP) randomised trial.  Lancet  1999; 353: 611-16. [Text]

6 Hansson L, Lindholm LH, Ekbom T, et al. Randomised trial of old and new antihypertensive drugs in elderly patients: cardiovascular mortality and morbidity the Swedish Trial in Old Patients with Hypertension-2 study.  Lancet  1999; 354: 1751-56. [Text]

7 Davis BR, Furberg CD, Wright JT, et al. Major cardiovascular events in hypertensive patients randomized to doxazosin vs chlorthalidone. The Antihypertensive and Lipid Lowering treatment to prevent Heart Attack Trial (ALLHAT).  JAMA  2000; 283: 1967-75. [PubMed]

8 Hansson L, Hedner T, Lund-Johansen P, et al. Randomised trial of effects of calcium antagonists compared with diuretics and -blockers on cardiovascular morbidity and mortality in hypertension: the Nordic Diltiazem (NORDIL) Study.  Lancet  2000; 356: 359-65. [Text]

9 Brown M, Palmer CR, Castaigne A, et al. Morbidity and mortality in patients randomised to double-blind treatment with a long-acting calcium-channel blocker or diuretic in the International Nifedipine GITS study: Intervention as a Goal in Hypertension Treatment (INSIGHT).  Lancet  2000; 356: 366-72. [Text]

10 Furberg CD, Wright JT, Davis BR, et al. Major outcomes in high-risk hypertensive patients randomised to angiotensin-converting enzyme inhibitor or calcium channel blocker vs diuretic: the Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT).  JAMA 2002; 288: 2981-97. [PubMed]

11 Black H, Elliot W, Grandits G, et al. Principal results of the Controlled Onset Verapamil Investigation of Cardiovascular Endpoints (CONVINCE) trial.  JAMA  2003; 289: 2073-82. [PubMed]

12 Zanchetti A, Bond M, Hennig M, et al. Calcium-antagonist lacidipine slows down progression of asymptomatic carotid atherosclerosis.  Circulation  2002; 106: 2422-27. [PubMed]

13 Pepine CJ, Handberg EM, Cooper-DeHoff RM, et al. A calcium antagonist vs a non-calcium antagonist hypertension treatment strategy for patients with coronary artery disease. The International Verapamil-Trandolapril Study (INVEST): a randomized controlled trial.  JAMA 2003; 290: 2805-16. [PubMed]

14 Staessen JA, Wang J-G, Thijs L. Cardiovascular prevention and blood pressure reduction: a quantitative overview updated until 1 March 2003.  J Hypertens  2003; 21: 1055-76. [PubMed]

15 Blood Pressure Lowering Treatment Trialists' Collaboration. Effect of different blood-pressure lowering regimens on major cardiovascular events: results of prospectively-designed overviews of randomised trials.  Lancet  2003; 362: 1527-35. [Text]

16 Dahlf B, Devereux RB, Kjeldsen SE, et al. Cardiovascular morbidity and mortality in the Losartan Intervention For Endpoint reduction in hypertension study (LIFE): a randomised trial against atenolol.  Lancet  2002; 359: 995-1003. [Text]

17 Wing L, Reid C, Ryan P, et al. A comparison of outcomes with angiotensin-converting-enzyme inhibitors and diuretics for hypertension in the elderly.  N Engl J Med  2003; 348: 583-92. [PubMed]

18 Mann J, Julius S, for the VALUE Trial Group. The Valsartan Antihypertensive Long-term Use Evaluation (VALUE) Trial of Cardiovascular Events in Hypertension. Rationale and Design.  Blood Press  1998; 7: 176-83. [PubMed]

19 Kjeldsen SE, Julius S, Brunner HR, et al. Characteristics of 15314 hypertensive patients at high coronary risk. The VALUE Trial.  Blood Press  2001; 10: 83-91. [PubMed]

20 Julius S, Kjeldsen SE, Brunner HR, et al, for the VALUE Trial. VALUE Trial: Long-term BPtrends in 13,449 patients with hypertension and high cardiovascular risk.  Am J Hypertens  2003; 16: 544-48. [PubMed]

21 Brunner HR. Experimental and clinical evidence that angiotensin II is an independent risk factor for cardiovascular disease.  Am J Cardiol  2001; 87: 3C-9C. [PubMed]

22 Collins R, Peto R, MacMahon S, et al. Blood pressure, stroke, and coronary heart disease. Part 2, short-term reductions in blood pressure: overview of randomised drug trials in their epidemiological context.  Lancet  1990; 335: 827-39.  [PubMed]

23 WHO. Department of Non-Communicable Disease Surveillance. WHO 1999 criteria for diagnosis of diabetes mellitus. Geneva: World Health Organization, 1999; 1-59.

24 Okin PM, Roman MJ, Devereux RB, Kligfield P. Electrocardiographic identification of increased left ventricular mass by simple voltage-duration products.  J Am Coll Cardiol  1995; 25: 417-23. [PubMed]

25 Okin PM, Roman MJ, Devereux RB, Kligfield P. Electrocardiographic identification of left ventricular hypertrophy: test performance in relation to definition of hypertrophy and presence of obesity.  J Am Coll Cardiol  1996; 27: 124-31. [PubMed]

26 Lithell H, Hansson L, Skoog I, et al. for the SCOPE Study Group. The Study on Cognition and Prognosis in the Elderly (SCOPE): principal results of a randomised double-blind intervention trial.  J Hypertens  2003; 21: 875-86. [PubMed]

27 PROGRESS Collaborative Group. Randomised trial of a perindopril-based blood pressure lowering regimen among 6105 individuals with previous stroke or transient ischaemic attack.  Lancet  2001; 358: 1033-41. [Text]

28 EUROPA Investigators. Efficacy of perindopril in reduction of cardiovascular events among patients with stable coronary artery disease: randomised, double-blind, placebo-controlled, multicentre trial (the EUROPA study).  Lancet  2003; 362: 782-88. [Text]

29 Pool JL, Glazer R, Chiang YT, Gatlin M. Dose-response efficacy of valsartan, a new angiotensin II receptor blocker.  J Hum Hypertens  1999; 13: 275-81. [PubMed]

30 Cohn JN, Tognoni G; Valsartan Heart Failure Trial Investigators. A randomized trial of the angiotensin-receptor blocker valsartan in chronic heart failure.  N Engl J Med 2001; 345: 1667-75. [PubMed]

31 Pfeffer MA, McMurray JJ, Velazquez EJ, et al. Valsartan in Acute Myocardial Infarction Trial Investigators. Valsartan, captopril, or both in myocardial infarction complicated by heart failure, left ventricular dysfunction, or both.  N Engl J Med 2003; 349: 1893-906. [PubMed]

32 Malacco E, Mancia G, Rappelli A, Menotti A, Zuccaro MS, Coppini A; Shell Investigators. Treatment of isolated systolic hypertension: the SHELL study results.  Blood Press 2003; 12: 160-67.  [PubMed]

33 Ligtenberg G, Blankestijn PJ, Oey PL, et al. Reduction of sympathetic hyperactivity by enalapril in patients with chronic renal failure.  N Engl J Med  1999; 340: 1321-28. [PubMed]

34 Messerli FH, Grossman E, Goldbourt U. Are -blockers efficacious as first-line therapy for hypertension in the elderly? A systematic review.  JAMA  1998; 279: 1903-07. [PubMed]

35 Chobanian AV, Bakris GL, Black HR, et al. The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure: the JNC 7 report.  JAMA 2003; 289: 2560-72. [PubMed]

36 Guidelines Committee. 2003 European Society of Hypertension-European Society of Cardiology guidelines for the management of arterial hypertension.  J Hypertens 2003; 21: 1011-53. [PubMed]

37 WHO, International Society of Hypertension Writing Group. 2003 World Health Organization (WHO)/International Society of Hypertension (ISH) statement on management of hypertension.  J Hypertens 2003; 21: 1983-92.  [PubMed]

38 Julius S, Jamerson K, Mejia A, Krause L, Schork N, Jones K. The association of borderline hypertension with target organ changes and higher coronary risk. Tecumseh Blood Pressure study.  JAMA 1990; 264: 354-58.  [PubMed]

39 Criscione L, Bradley W, Buhlmayer P, et al. Valsartan, preclinical and clinical profile of an antihypertensive angiotensin-II antagonst.  Cardiovasc Drug Rev  1995; 13: 230-50. [PubMed]

40 Weber M, Julius S, Kjeldsen SE, et al, for the Value Trial Group. Blood pressure dependent and independent effects of antihypertensive treatment on clinical events in the VALUE trial. Lancet. Published online Jun 14, 2004. http://image.thelancet.com/extras/ 04let5020web.pdf


IMPORTANTE

  •  Procure o seu médico para diagnosticar doenças, indicar tratamentos e receitar remédios. 
  • As informações disponíveis no site da Dra. Shirley de Campos possuem apenas caráter educativo.
Publicado por: Dra. Shirley de Campos
versão para impressão

Desenvolvido por: Idelco Ltda.
© Copyright 2003 Dra. Shirley de Campos