Shortly after being placed in a room, the patient desaturated to 88% on room air. The patient had an initial blood pressure of 138/108 mmHg, heart rate of 126 beats per minute, respiratory rate of 18 breaths per minute, temperature of 36.7° Celsius, and an oxygen saturation of 99% on room air. She had been employed as a welder for the past three years and had recently increased her work hours. She reported occasionally drinking alcohol. She denied any family history of sudden death, myocardial infarction, or heart failure. Her only home medication was ibuprofen and she had no known drug allergies.
She had no medical problems or past surgical history. She denied any fevers, chest or abdominal pain, recent travel, or viral illness. Over the same time, she had developed a dry, raspy, non-productive cough, bilateral leg swelling, and chest tightness. Her shortness of breath was exacerbated by exertion and lying down. A 29-year-old female presented to the emergency department (ED) with a chief complaint of worsening dyspnea over the prior three weeks.
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