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Difference between women and men in left ventricular pump function during predischarge exercise test after acute
T Iwasaka1, S Nakamura, T Sugiura
1Second Department of Internal Medicine, Kansai Medical University, Osaka, Japan.
The American Journal of Cardiology
|January 1, 1994
Summary
Postmenopausal women with myocardial infarction show impaired left ventricular (LV) pump function during exercise compared to men. This suggests gender influences LV remodeling after heart attack.
Area of Science:
- Cardiology
- Cardiovascular Physiology
- Gender-Specific Medicine
Background:
- Myocardial infarction (MI) affects cardiovascular function.
- Left ventricular (LV) remodeling is a critical process post-MI.
- Understanding gender differences in cardiac recovery is crucial.
Purpose of the Study:
- To compare LV pump function during predischarge exercise testing in postmenopausal women and age-matched men after MI.
- To investigate gender-based differences in LV remodeling post-MI.
Main Methods:
- Utilized radionuclide angiography to assess global and regional ejection fraction, LV end-diastolic volume, and systolic blood pressure to LV end-systolic volume ratio.
- Studied 25 postmenopausal women and 37 age-matched men with MI during predischarge exercise testing.
Main Results:
- No significant differences in resting LV function between genders.
- Women showed decreased ejection fraction and systolic blood pressure to LV end-systolic volume ratio during exercise; men showed increases.
- Women had a larger increase in LV end-systolic volume during exercise compared to men.
Conclusions:
- Postmenopausal women exhibit poorer LV pump function during exercise post-MI than age-matched men.
- Gender plays a significant role in the LV remodeling process after myocardial infarction.