11/12/2021
A 17-year-old Anushka is admitted to the emergency department with severe retrosternal chest pain. The pain began suddenly after an episode of self-induced vomiting following a large meal. The patient's parents say that she is very restricted in the foods she eats and induces vomiting frequently after meals. Her blood pressure is 100/60 mm Hg, heart rate is 98/min, respiratory rate is 14/min, and temperature is37.9°C (100.2°F). The patient is pale and appears to be in severe distress. Her lungs are clear to auscultation. On cardiac examination, a crunching, raspy sound is auscultated over the precordium that is synchronous with the heartbeat. The abdomen is soft and non-tender. Which of the following tests is likely to confirm the diagnosis in this patient?
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A. Upper endoscopy
B. ECG
C. Echocardiography
D. Contrast esophagram