UMMS Affiliation

Department of Medicine, Division of Preventive and Behavioral Medicine

Date

2-3-2009

Document Type

Article

Subjects

Aged; Death, Sudden, Cardiac; Epidemiologic Methods; Female; Heart Rate; Humans; Middle Aged; Myocardial Infarction; Postmenopause; Prognosis; Rest; Stroke

Disciplines

Cardiology | Cardiovascular Diseases

Abstract

OBJECTIVE: To evaluate resting heart rate as an independent predictor of cardiovascular risk in women.

DESIGN: Prospective cohort study.

SETTING: The Women's Health Initiative was undertaken at 40 research clinics in the United States.

PARTICIPANTS: 129 135 postmenopausal women.

MAIN OUTCOME MEASURE: Clinical cardiovascular events.

RESULTS: During a mean of 7.8 (SD 1.6) years of follow up, 2281 women were identified with myocardial infarction or coronary death and 1877 with stroke. We evaluated associations between resting heart rate and cardiovascular events in Cox regression models adjusted for multiple covariates. Higher resting heart rate was independently associated with coronary events (hazard ratio 1.26, 95% confidence interval 1.11 to 1.42 for highest [>76 beats per minute] v lowest quintile [≤62 beats per minute]; P=0.001), but not with stroke. The relation between heart rate and coronary events did not differ between white women and women from other ethnic groups (P for interaction=0.45) or between women with and without diabetes (P for interaction=0.31), but it was stronger in women aged 50-64 at baseline than in those aged 65-79 (P for interaction=0.009).

CONCLUSION: Resting heart rate, a low tech and inexpensive measure of autonomic tone, independently predicts myocardial infarction or coronary death, but not stroke, in women.

TRIAL REGISTRATION: ClinicalTrials.gov NCT00000611.

Comments

Citation: BMJ. 2009 Feb 3;338:b219. doi: 10.1136/bmj.b219. Link to article on publisher's site

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Related Resources

Link to Article in PubMed

PubMed ID

19193613

 
 

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