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Peripartum cardiomyopathy: a longitudinal echocardiographic study
A G Witlin1, W C Mabie, B M Sibai
1Department of Obstetrics and Gynecology, University of Tennessee, Memphis, USA.
Insights
Women with severe peripartum cardiomyopathy (PPCM) and myocardial dysfunction often do not regain normal cardiac function. Echocardiographic trends show persistent dysfunction in most severe cases.
Area of Science:
- Cardiology
- Obstetrics
- Maternal Health
Background:
- Peripartum cardiomyopathy (PPCM) is a rare form of heart failure.
- It affects women in late pregnancy or early postpartum period.
- Echocardiography is crucial for diagnosis and monitoring.
Purpose of the Study:
- To track echocardiographic changes in patients diagnosed with peripartum cardiomyopathy.
- To assess long-term cardiac function trends after PPCM diagnosis.
Main Methods:
- Prospective longitudinal echocardiographic study of nine women with PPCM.
- Defined severe dysfunction (LVEDD ≥ 60 mm, FS ≤ 21%) and mild dysfunction (LVEDD < 60 mm, FS 22–24%).
- Used unpaired t tests and Fisher's exact test for statistical analysis.
Main Results:
- All patients presented with pulmonary edema and decreased systolic function.
- Severe dysfunction group showed significantly larger LVEDD and lower FS at initial diagnosis and follow-up.
- Six of seven women with severe dysfunction had stable disease; one awaited transplant. One of two with mild dysfunction resolved, one remained stable.
Conclusions:
- Severe myocardial dysfunction in PPCM is unlikely to resolve fully.
- Long-term echocardiographic monitoring is essential for PPCM patients.
- Prognosis is guarded for patients with severe PPCM-related cardiac dysfunction.
Objective:
Our purpose was to determine echocardiographic trends after initial diagnosis of peripartum cardiomyopathy.
Study Design:
Nine women diagnosed with peripartum cardiomyopathy were prospectively recruited for a longitudinal echocardiographic study. Severe myocardial dysfunction was defined as left ventricular end-diastolic dimension > or = 60 mm + fractional shortening < or = 21%, and mild dysfunction was defined as left ventricular end-diastolic dimension < 60 mm + fractional shortening 22% to 24%. Unpaired t tests were used to compare sample means and Fisher's exact test used to compare discrete variables.
Results:
All women were seen initially for pulmonary edema. Echocardiography showed decreased systolic function in all women. The mean age at diagnosis was 33.0 +/- 6.9 years. All but one woman had a diagnosis of either chronic hypertension (n = 6) or preeclampsia (n = 2). Four women were first seen ante partum and five post partum (range 1 day to 2 months). Repeat echocardiography was performed in all nine women (median 8 months, range 6 weeks to 5 years). There was no correlation between antepartum or postpartum presentation and cardiovascular status on follow-up (p = 0.3). Values for initial left ventricular end-diastolic dimension, severe versus mild dysfunction (68.3 +/- 7.2 mm vs 55.0 +/- 4.2 mm, p = 0.046), follow-up left ventricular end-diastolic dimension, severe versus mild (68.7 +/- 4.1 mm vs 52.0 +/- 5.7 mm, p = 0.002), and follow-up fractional shortening, severe versus mild (14.6% +/- 5.0% vs 28.5% +/- 9.2%, p = 0.02) are significant. Six of the seven women with severe dysfunction had stable disease in follow-up and one is awaiting heart transplant. One of the two women with mild dysfunction had disease resolution and one had stable disease.
Conclusion:
Patients with severe myocardial dysfunction due to peripartum cardiomyopathy are unlikely to regain normal cardiac function on follow-up.