A 62-year-old man with hyperlipidemia and active smoking (1 pack daily) presents with substernal chest pressure that occurs predictably with uphill walking and resolves within 5 minutes of rest. Vital signs: BP 148/92 mmHg, HR 88 bpm, RR 16, temp 37°C, SpO2 98% on room air. Troponin and myoglobin are normal. ECG shows no acute ST changes. He denies dyspnea or diaphoresis. Which diagnosis best explains his presentation?
- A)Stable anginaGABARITO
- B)NSTEMI
- C)Aortic dissection
- D)Prinzmetal angina
- E)Cardiac tamponade
Explicação
Stable angina is correct. Predictable exertional chest pain relieved by rest and normal biomarkers indicate transient ischemia due to a fixed atherosclerotic narrowing without myocyte necrosis. Increased demand unmasks the limited coronary flow reserve during ... Ver explicação completa e trilha adaptativa →