Effects of Hormone Replacement on Progression of Coronary Calcium as Measured by Electron Beam Tomography
2005
Purpose: The recent Women's Health Initiative (WHI) results have demonstrated that combined estrogen plus progestin imparts a small but significant increase in cardiovascular risk and breast cancer among asymptomatic women. However, the effect and potential benefit of unopposed estrogen is not as clear. We sought to evaluate the progression of subclinical atherosclerosis in postmenopausal women using no hormone replacement therapy (HRT), combined therapy, and estrogen alone in an observational study. Methods: Postmenopausal women without symptoms or known coronary heart disease (CHD) were evaluated at our center for follow-up of coronary calcification. Patients were physician referred and underwent two consecutive electron beam tomography scans at least 1 year apart. All women fitting the study criteria were asked to participate, and those who consented were included. Demographic data, risk factors for CHD, HRT, and other medication use were collected by interview. Results: The study included 177 asymptom...
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