Chest pain: The importance of serial ECGsA 44-year-old man, previously well, presented to the emergency department with severe hypertension and a 4-hour history of typical angina-like chest pain with associated diaphoresis. He had dyslipidemia, a 5-pack-year history of smoking, and, likely, undiagnosed hypertension.On arrival, his blood pressure was 200/110 mm Hg, representing a hypertensive emergency. A clinical examination was unremarkable. A blood sample was sent for troponin analysis, and a nitroglycerin infusion was started.

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