Effect of a change in gender on coronary arterial size - A longitudinal intravascular ultrasound study in transplanted hearts

被引:34
作者
Herity, NA [1 ]
Lo, S [1 ]
Lee, DP [1 ]
Ward, MR [1 ]
Filardo, SD [1 ]
Yock, PG [1 ]
Fitzgerald, PJ [1 ]
Hunt, SA [1 ]
Yeung, AC [1 ]
机构
[1] Stanford Univ, Div Cardiovasc Med, Stanford, CA 94305 USA
关键词
D O I
10.1016/S0735-1097(03)00246-8
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
OBJECTIVES We sought to document whether a physiologic change in gender has any effect on coronary arterial size. BACKGROUND The coronary arteries are smaller in women, even after correction for body surface area (BSA). These differences may contribute to adverse clinical outcomes after coronary artery bypass graft surgery and myocardial infarction in women. In male and female transsexuals, pharmacologic doses of estrogens and androgens significantly influence vascular diameter. Thus, gender differences in the coronary vasculature may be a reflection of the hormonal environment. METHODS In 86 patients who had undergone orthotopic heart transplantation, serial intravascular ultrasound studies of the proximal left anterior descending coronary artery (LAD) were analyzed. Changes in vessel area (VA) over the first or second post-transplant year were recorded, and comparisons were made between donor hearts that were transplanted in a patient of the same gender and those that were transplanted in a patient of the opposite gender. RESULTS Vessel area of the proximal LAD increased over time in all patient groups. In hearts transplanted within the same gender and in male donor hearts transplanted to female recipients, the change was small and not significant. However, in hearts transplanted from female donors to male recipients, there was a substantial and highly significant increase in LAD VA (median 16.13 to 17.88 mm(2); p = 0.01). This increase was not explained,by confounding due to. changes in BSA or left ventricular wall thickness. CONCLUSIONS This pattern of arterial remodeling early after heart transplantation supports a link between host gender and coronary arterial size. (C) 2003 by the American College of Cardiology Foundation.
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页码:1539 / 1546
页数:8
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