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[Two cases of peripartum cardiomyopathy].

Two cases of peripartum cardiomyopathy, a rare type of dilated cardiomyopathy, are reported. A 36-year-old woman developed congestive heart failure 1 month after delivering her third child. Cardiac catheterization revealed diffuse hypokinesis of the left ventricle and an ejection fraction of 28%. The second study, 20 months later, demonstrated an ejection fraction of 46%. Endomyocardial biopsy showed mild interstitial edema. A 42-year-old woman developed toxemia during pregnancy. She delivered her second child at 38 weeks of gestation. Two weeks later, she developed congestive heart failure. Cardiac catheterization demonstrated diffuse hypokinesis of left ventricle with an ejection fraction of 40%. Endomyocardial biopsy revealed dense fibrosis. Follow-up angiography performed 8 months later showed similar findings with an ejection fraction of 34%. These two cases suggest the importance of evaluation of endomyocardial biopsy to determine the degree of interstitial fibrosis that may reflect the prognosis for patients with peripartum cardiomyopathy confirmed by measurements of ejection fraction.