Post-partum myocardial infarction is rare and the pathophysiology obscure. This report describes a 30-year-old lactating female in whom an infero-lateral wall myocardial infarction was documented 5 months following a normal pregnancy and delivery. Coronary angiography revealed normal coro nary arteries, a finding described previously in 3 such patients. Contrary to previous speculations, however, provocative testing with ergonovine pro duced no evidence of coronary artery spasm.
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