Effects of Normal, Pre-Hypertensive, and Hypertensive Blood Pressure Levels on Progression of Coronary Atherosclerosis

Ilke Sipahi, E. Murat Tuzcu, Paul Schoenhagen, Katherine E. Wolski, Stephen J. Nicholls, Craig Balog, Timothy D. Crowe, Steven E. Nissen

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147 Citations (Scopus)

Abstract

Objectives: The purpose of this study was to evaluate the effects of normal blood pressure (BP), pre-hypertension, and hypertension on progression of coronary atherosclerosis. Background: The Seventh Report of the Joint National Committee on the Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC-7) classifies BP as normal, pre-hypertension, and hypertension. The effects of these categories on progression of coronary atherosclerosis are unknown. Methods: The 274 patients who completed the intravascular ultrasound (IVUS) substudy of the CAMELOT (Comparison of Amlodipine Versus Enalapril to Limit Occurrences of Thrombosis) trial were included. The entry criteria were ≥1 angiographic coronary stenosis >20% and diastolic BP <100 mm Hg. Patients underwent a baseline coronary IVUS, which was repeated after 2 years of amlodipine, enalapril, or placebo therapy. The BP was evaluated periodically, and the averages of the measurements were used in the analyses. Results: Mean BP throughout the study was 127.0 ± 12.0/75.5 ± 6.8 mm Hg. In multivariable analysis, significant determinants of progression included systolic BP (r = 0.16; p = 0.006) and pulse pressure (r = 0.14; p = 0.02). Patients with "hypertensive" average BP had a 12.0 ± 3.6 mm3 (least-square mean ± SE) increase in atheroma volume, those with "pre-hypertensive" BP had no major change (0.9 ± 1.8 mm3), and those with "normal" BP had a decrease of 4.6 ± 2.6 mm3 (p < 0.001 by analysis of covariance; p < 0.05 for comparison of all pairs). Conclusions: The most favorable rate of progression of coronary atherosclerosis is observed in patients whose BP falls within the "normal" JNC-7 category (i.e., systolic BP <120 mm Hg and diastolic BP <80 mm Hg). This study suggests that in patients with coronary artery disease, the optimal BP goal may be substantially lower than the <140/90 mm Hg level.

Original languageEnglish
Pages (from-to)833-838
Number of pages6
JournalJournal of the American College of Cardiology
Volume48
Issue number4
DOIs
Publication statusPublished - 15 Aug 2006
Externally publishedYes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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