Question1.A 35-year-old woman presents with left-sided chest pain, catching her on deep inspiration, present for 8 hours, and associated with breathlessness. Examination shows a heart rate of 90 bpm, BP 110/60, Po2 of 95% and an otherwise unremarkable cardiorespiratory examination. Her ECG shows pan-anterior T wave inversion, and her troponin is 1.5 (upper normal limit, 0.05). The most likely diagnosis is which of the following?
