Trauma-induced acute myocardial infarction due to delayed dissection of the left anterior descending coronary artery.

Acute myocardial infarction is a very rare, life-threatening complication of blunt chest trauma. A 27-year-old man with no previous medical history was admitted to the emergency department due to multiple trauma following a car accident. After 48h following the accident, the patient's condition rapidly deteriorated, with severe dyspnea at rest, tachycardia, and increasing chest pain. A 12-lead ECG showed a sinus tachycardia at 120bpm with significant ST-segment elevation in leads V1 to V5, pathologic Q wave in I, aVL, and QS complex in leads V1 to V4. Bedside echocardiography disclosed akinesis of the anterior and lateral walls, apex, and anterior septum with severely decreased left ventricular ejection fraction of 30%. Urgent coronary angiography revealed an occlusive dissection of the proximal left anterior descending coronary artery. Primary percutaneous coronary intervention with a Biolimus A9™-eluting stent implantation were successfully performed. The further course was uneventful. At 12-month follow-up, the patient has remained asymptomatic with no recurrence of cardiovascular symptoms.