LAUSR

A 60-year-old man was admitted to our hospital with chest pain without palpitation or syncope that had started a few months prior. He had a medical history of hypertension that was diagnosed 15–20 years prior. On physical examination, his pulse rate and blood pressure were within normal limits. Cardiac auscultation revealed a regular cardiac rate and rhythm without audible murmurs. His complete blood count, biochemistry results and myocardial bound creatine kinase were within normal limits. However, his troponin I level was slightly elevated (0.144; normal range, 0.00–0.11 ng/ml). Electrocardiography tracing revealed sinus rhythm with 1-mm horizontal ST depression.