Faculty Collaboration Database

Blood pressure and risk of secondary cardiovascular events in women: the Women's Antioxidant Cardiovascular Study (WACS). Circulation 2004 Apr 06;109(13):1623-9

Date

03/17/2004

Pubmed ID

15023883

DOI

10.1161/01.CIR.0000124488.06377.77

Scopus ID

2-s2.0-1842559970 (requires institutional sign-in at Scopus site)   36 Citations

Abstract

BACKGROUND: In apparently healthy people, the relation between blood pressure and risk of subsequent cardiovascular disease (CVD) is linear. In persons with CVD, the relation is uncertain.

METHODS AND RESULTS: We conducted a prospective study of 5218 older women with CVD who reported their blood pressure at baseline in the Women's Antioxidant Cardiovascular Study (WACS), an ongoing double-blind, placebo-controlled secondary prevention trial of the benefits and risks of antioxidant vitamins, folic acid, vitamin B6, and vitamin B12 among women with CVD or > or =3 coronary risk factors. A total of 661 confirmed CVD events (nonfatal myocardial infarction, nonfatal stroke, coronary artery bypass graft procedure, percutaneous coronary angioplasty, or CVD death) occurred during a median follow-up of 6.5 years. After controlling for age, randomized treatment assignment, antihypertensive medication use, and coronary risk factors, we found that systolic blood pressure (SBP) was a strong predictor of CVD events and that the relation between SBP and CVD risk was positive, continuous, and linear (P for linear trend=0.001). For each 10-mm Hg increment in SBP, there was a 9% (95% CI 4% to 15%) increase in risk of secondary CVD events. Diastolic blood pressure, mean arterial pressure, and pulse pressure were weaker predictors of CVD risk in this cohort, and joint consideration of SBP and diastolic blood pressure found that only SBP significantly predicted risk. Use of antihypertensive medication did not modify the relationship of SBP with CVD events.

CONCLUSIONS: In this population of women with CVD, we observed a strong, continuous, and linear association between SBP and risk of secondary CVD events. SBP was the blood pressure measure most strongly related to CVD risk.

Author List

Mason PJ, Manson JE, Sesso HD, Albert CM, Chown MJ, Cook NR, Greenland P, Ridker PM, Glynn RJ

Author

Peter Mason MD Professor in the Medicine department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Adult
Aged
Antihypertensive Agents
Antioxidants
Blood Pressure
Cardiovascular Diseases
Cohort Studies
Double-Blind Method
Female
Folic Acid
Follow-Up Studies
Humans
Middle Aged
Predictive Value of Tests
Prospective Studies
Risk Factors
Systole
Vitamin B 12
Vitamin B 6