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Longitudinal changes in left ventricular architecture and function in peripartum cardiomyopathy
1Department of Medicine, Brigham & Women's Hospital, Boston, Massachusetts 02115.
The American Journal of Cardiology
|October 1, 1987
Summary
Peripartum cardiomyopathy causes significant left ventricular (LV) dilation and reduced ejection fraction. Most patients show rapid LV functional recovery within months, indicating reversible heart muscle remodeling.
Area of Science:
- Cardiology
- Cardiovascular Physiology
Background:
- Peripartum cardiomyopathy (PPCM) is a rare form of heart failure.
- Characterized by left ventricular (LV) dysfunction during the final month of pregnancy or within five months of delivery.
Purpose of the Study:
- To quantitate LV function in PPCM patients.
- Compare LV function to normal postpartum women.
- Assess serial changes in LV function during recovery.
Main Methods:
- Utilized 2-D echocardiography and radionuclide ventriculography.
- Measured LV end-diastolic and end-systolic volumes, LV wall mass, and ejection fraction.
- Performed serial follow-up for up to 24 months.
Main Results:
- PPCM patients exhibited marked LV dilatation and significantly reduced ejection fraction compared to controls.
- LV wall mass index was also elevated in PPCM patients.
- Endomyocardial biopsies revealed interstitial fibrosis without active inflammation.
- 13 out of 14 patients showed rapid and early improvement in LV function.
Conclusions:
- PPCM involves significant LV remodeling with dilation and dysfunction.
- LV functional recovery is common and follows an exponential time course.
- Findings suggest a reversible nature of heart muscle changes in PPCM.