Acute Ischemic Heart Disease
Coronary microvascular dysfunction is highly prevalent in women with chest pain in the absence of coronary artery disease: Results from the NHLBI WISE study,☆☆

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Abstract

Background Chest pain in the absence of obstructive coronary artery disease (CAD) is common in women; it is frequently associated with debilitating symptoms and repeated evaluations and may be caused by coronary microvascular dysfunction. However, the prevalence and determinants of microvascular dysfunction in these women are uncertain. Methods We measured coronary flow velocity reserve (coronary velocity response to intracoronary adenosine) to evaluate the coronary microvasculature and risk factors for atherosclerosis in 159 women (mean age, 52.9 years) with chest pain and no obstructive CAD. All women were referred for coronary angiography to evaluate their chest pain as part of the Women’s Ischemia Syndrome Evaluation (WISE) study. Results Seventy-four (47%) women had subnormal (<2.5) coronary flow velocity reserve suggestive of microvascular dysfunction (mean, 2.02 ± 0.38); 85 (53%) had normal reserve (mean, 3.13 ± 0.64). Demographic characteristics, blood pressure, ventricular function, lipid levels, and reproductive hormone levels were not significantly different between women with normal and those with abnormal microvascular function. Postmenopausal hormone use within 3 months was significantly less prevalent among those with microvascular dysfunction (40% vs 60%, P =.032). Age and number of years past menopause correlated with flow velocity reserve (r = –0.18, P =.02, and r = –0.30, P <.001, respectively). No significant associations were identified between flow velocity reserve and lipid and hormone levels, blood pressure, and left ventricular ejection fraction. Conclusions Coronary microvascular dysfunction is present in approximately one half of women with chest pain in the absence of obstructive CAD and cannot be predicted by risk factors for atherosclerosis and hormone levels. Therefore, the diagnosis of coronary microvascular dysfunction should be considered in women with chest pain not attributable to obstructive CAD. (Am Heart J 2001;141:735-41.)

Section snippets

Methods

The Women’s Ischemia Evaluation (WISE) study is a 4-center study focused on developing new diagnostic techniques and advancing our understanding of pathophysiologic mechanisms for ischemic heart disease in women.5 Women referred for clinically indicated coronary angiography to evaluate chest pain were candidates for enrollment. As part of WISE, a subgroup of 159 women without obstructive CAD (<50% diameter stenosis in all coronaries) underwent invasive evaluation of the functional integrity of

Results

The 159 women, 85.5% of whom were white, had a mean age of 52.9 ± 10.6 years and were mostly postmenopausal (81.0%). The cohort had a maximum diameter coronary stenosis of 13.7% ± 18.2%. Of these women, 19.6% were current smokers, 17.1% had diabetes, 45.5% and 53.8% reported histories of hyperlipidemia and hypertension, respectively, and 43.6% of all women were using postmenopausal hormones (50.4% of postmenopausal women).

Discussion

Women with chest pain in the absence of obstructive coronary atherosclerosis pose both a diagnostic and a therapeutic challenge. Although many of these women are diagnosed with “noncardiac” chest pain, an alternative mechanism for their symptoms is coronary microvascular dysfunction. Identification of this disorder is important because known treatments provide effective symptom relief, and its diagnosis can limit the need for repeated evaluations of “noncardiac” chest pain.12, 13, 14 The

References (28)

  • N Bairey Merz et al.

    The Women’s Ischemia Syndrome Evaluation (WISE) study: protocol design, methodology and pilot phase report

    J Am Coll Cardiol

    (1999)
  • PEPI Writing Group

    Effects of estrogen or estrogen/progestin regimens on heart disease risk factors in postmenopausal women: the Postmenopausal Estrogen/Progestin Interventions (PEPI) Trial

    JAMA

    (1995)
  • E Barrett-Conner et al.

    Prospective study of endogenous sex hormones and fatal cardiovascular disease in postmenopausal women

    Lancet

    (1995)
  • FJ. Klocke

    Measurements of coronary flow reserve: defining pathophysiology versus making decisions about patient care

    Circulation

    (1987)
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    Supported by contracts from the National Heart, Lung, and Blood Institute, contracts N01-HV-68161, N01-HV-68162, N01-HV-68163, and N01-HV-68164 and grants from the Gustavis and Louis Pfeiffer Research Foundation; the Women’s Guild, Cedars-Sinai Medical Center; Ladies Hospital Aid Society of Western Pennsylvania, University of Pittsburgh; and qmed, Inc.

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    Reprint requests: Steven E. Reis, MD, c/o WISE Coordinating Center, 127 Parran Hall, 130 DeSoto St, Pittsburgh, PA 15261. E-mail: [email protected]

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