The relative risk of myocardial infarction in patients who have high blood pressure and non-cardiac pain |
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Authors: | Bruce M Psaty MD PhD Thomas D Koepsell MD MPH James P LoGerfo MD MPH Edward H Wagner MD MPH Thomas S Inui MD ScM |
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Institution: | (1) the Robert Wood Johnson Clinical Scholars Program, University of Washington, Seattle, Washington;(2) Department of Medicine, University of Washington, Seattle, Washington;(3) Department of Epidemiology, University of Washington, Seattle, Washington;(4) Department of Health Services, University of Washington, Seattle, Washington;(5) the Center for Health Studies, Group Health Cooperative of Puget Sound, Seattle, Washington;(6) Present address: the Departments of Medicine and Epidemiology, University of Washington, Seattle, Washington |
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Abstract: | The authors conducted a population-based case-control study to determine the risk of myocardial infarction in patients who
reported angina-like symptoms. The cases studied were those of patients who had high blood pressure and had sought treatment
in 1984 with myocardial infarction as the first manifestation of coronary artery disease. Controls, a random sample of patients
who had hypertension, were frequency-matched to cases by age and gender. Blind to case-control status, the authors reviewed
the medical records of the 32 cases and 64 controls for reports of angina-like symptoms. While controls reported such symptoms
at a constant rate, the events for the cases clustered near their infarctions. When a patient with hypertension sought medical
advice for angina-like symptoms, the risk of infarction within 30 days was 14.2 (95% confidence interval, 2.8 to 71), and
after 30 days it fell to 1.03. Among patients who have high blood pressure but no history of angina, presentations with prodromal
symptoms in the primary care setting are so common that only about one in 100 such visits actually heralds myocardial infarction.
Presented at the National Meeting of the Robert Wood Johnson Clinical Scholars Program, Scottsdale, AZ (October 1986) and
the National Meeting of the American Federation for Clinical Research, San Diego, CA (May 1987).
Supported in part by a grant from the Robert Wood Johnson Foundation, Princeton, NJ, and by the Health Services Research and
Development Program, Veterans Administration Medical Center, Seattle, WA. The opinions, conclusions, and proposals in the
text are those of the authors and do not necessarily represent the views of the Robert Wood Johnson Foundation or the VA Medical
Center. |
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Keywords: | myocardial infarction coronary artery disease chest pain hypertension case-control study |
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