Cited by 298Blood Pressure and Hypertension StudiesSodium Intake and HealthCardiovascular Health and Disease Prevention

Effects of blood pressure lowering on outcome incidence in hypertension: 7. Effects of more vs. less intensive blood pressure lowering and different achieved blood pressure levels – updated overview and meta-analyses of randomized trials

Thomopoulos, Costas, Parati, Gianfranco, Zanchetti, Alberto·2016·Journal of Hypertension

Abstract

BACKGROUND AND OBJECTIVES: Previous meta-analyses of our group have investigated the cardiovascular effects of more vs. less intense blood pressure (BP) treatment and the BP levels to be achieved by treatment. A few additional trials have been completed recently, particularly the large SPRINT study. Updating of the previous meta-analyses has been done with the objective of further clarifying the practical question of BP targets of antihypertensive treatment. METHODS: Among randomized-controlled trials (RCTs) of BP lowering treatment between 1966 and 2015, 16 (52 235 patients) compared more vs. less intense treatment and fulfilled other preset criteria, and in 34 (138 127 patients) SBP in the active (vs. placebo) or the more (vs. less) intense treatment was below (vs., respectively, above) three predetermined cutoffs. For their meta-analyses risk ratios (RR) and 95% confidence intervals, standardized to -10/-5 mmHg SBP/DBP reduction, and absolute risk reductions of seven fatal and nonfatal outcomes were calculated. RESULTS: More intense BP lowering significantly reduced risk of stroke [RR 0.71 (0.60-0.84)], coronary events [0.80 (0.68-0.95)], major cardiovascular events [0.75 (0.68-0.85)] and cardiovascular mortality [0.79 (0.63-0.97)], but not heart failure and all-cause death. When the 16 RCTs were stratified according to cardiovascular death risk, relative risk reduction did not differ between strata, but absolute risk reduction increased with cardiovascular risk, though the residual risk also increased. Stratification of the 34 RCTs according to the three different SBP cutoffs (150, 140 and 130 mmHg) showed that a SBP/DBP difference of -10/-5 mmHg across each cutoff significantly reduced risk of all outcomes to the same proportion (relative risk reduction), but absolute risk reduction of most outcomes had a significant trend to decrease at lower cutoffs. CONCLUSION: Updating of previous meta-analyses indicates that more vs. less intense BP lowering can reduce not only stroke and coronary events, but also cardiovascular mortality. Including data from recent RCTs also shows that all major outcomes can be reduced by lowering SBP a few mmHg below vs. above 130 mmHg, but absolute risk reduction becomes smaller, suggesting patients at lower initial SBP were at a lower level of cardiovascular risk.

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Crossref · 10.1097/hjh.0000000000000881

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Authors
Thomopoulos, C., Parati, G., & Zanchetti, A.
Affiliations
University of Milan (IT)
Corresponding author
Zanchetti, Alberto
Venue
Journal of Hypertension
Published
2016-04
Volume
34
Issue
4
Pages
613-622
ISSN
0263-6352 (ISSN-L)
OpenAlex
W2330187990
Cited by
298
References
62
Citations by year
2026: 6 · 2025: 19 · 2024: 14 · 2023: 21 · 2022: 28 · 2021: 26 · 2020: 36 · 2019: 44 · 2018: 41 · 2017: 35 · 2016: 28
FWCI
8.71
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hypertension (publishedVersion)
  • PubMed (publishedVersion)
  • BOA (University of Milano-Bicocca) (submittedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
  • Health Sciences › Nursing › Nutrition and Dietetics › Sodium Intake and Health
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
Keywords
hypertension, blood pressure reduction, blood pressure targets, cardiovascular mortality, stroke, coronary events, major adverse cardiovascular events, heart failure, all-cause mortality, residual cardiovascular risk, SPRINT trial, absolute risk reduction, relative risk reduction, standardized mean difference
MeSH terms
Antihypertensive Agents, Blood Pressure, Humans, Hypertension, Incidence, Treatment Outcome

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