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We report a case of essential thrombocythemia(ET) in a 30-year-old female who exhibited inferior wall ST-elevation acute myocardial infarction(AMI) without significant obstructive coronary artery disease.Right coronary vasospasm was observed after intra-coronary methylergonovine administration and she received verapamil 120 mg/d thereafter and hydroxyurea 1500 mg/d for thrombocythemia.After discontinuation of the hydroxyurea for 9 mo based on the impression of coronary spasm-related instead of coronary thrombosis-related AMI,her platelet count rose but no chest pain was observed.It is suggested that coronary spasm potentially plays a role in patients with ET,AMI and no significant coronary artery stenosis.
We report a case of essential thrombocythemia (ET) in a 30-year-old female who had inferior inferior wall ST-elevation acute myocardial infarction (AMI) without significant obstructive coronary artery disease. Rigate coronary vasospasm was observed after intra-coronary methylergonovine administration and She received verapamil 120 mg / d thereafter and hydroxyurea 1500 mg / d for thrombocythemia. After discontinuation of the hydroxyurea for 9 mo based on the impression of coronary spasm-related instead of coronary thrombosis-related AMI, her platelet count rose but no chest pain was observed. It is suggested that coronary spasm potentially plays a role in patients with ET, AMI and no significant coronary artery stenosis.