Review Question - QID 212419

A 27-year-old woman presents to the emergency department with chest pain after an episode of syncope. She states she was at home watching television when her symptoms began. The patient’s past medical history is only notable for an ankle sprain treated with an orthopedic boot for the past month. The patient is currently sexually active and uses oral contraceptive pills for birth control. She smokes 1 pack of cigarettes per day and drinks 2 alcoholic drinks every night. Her temperature is 100.5°F (38.1°C), blood pressure is 97/60 mmHg, pulse is 130/min, respirations are 17/min, and oxygen saturation is 98% on room air. An ECG is performed as seen in Figure A. A chest radiograph demonstrates a wedge-shaped opacity in the left upper lobe. Physical exam is notable for a morbidly obese woman who appears uncomfortable. Cardiopulmonary exam is notable only for tachycardia. Which of the following interventions is most likely to reduce mortality in this patient?