Acute myocardial infarction caused by paradoxical coronary embolization in a patient with a patent foramen ovale.

We describe the case of a young woman without cardiac risk factors who had an acute inferoapical myocardial infarction. Coronary angiographic appearance was consistent with thrombus in the distal left anterior descending coronary artery. A patent foramen ovale with moderate right-to-left shunting after the Valsalva maneuver was detected by contrast transesophageal echocardiography. No other cardioembolic source was identified. Paradoxical embolization through a patent foramen ovale is a rare phenomenon, which appeared to have resulted in myocardial infarction in this patient.