March’s Case: You are working in the ED late one evening when an 82-year-old man is brought in by his son. His son reports that earlier today, his father had been in his usual state of health, but this evening he found his father confused, with labored breathing. On arrival, the patient has the following vital signs: temperature, 38?C; heart rate, 130 beats/min; blood pressure, 110/60 mm Hg; respiratory rate, 34 breaths/min; and oxygen saturation, 89% on room air. He is delirious and unable to answer questions. A focused physical examination demonstrates tachycardia without extra heart sounds or murmurs, right basilar crackles on lung auscultation, a benign abdomen, and 1+ lower extremity pitting edema. You establish intravenous access with a peripheral catheter and send basic labs. A further history obtained from the son reveals that his father has congestive heart failure with a low systolic ejection fraction, as well as a history of several prior myocardial infarctions that were treated with stent placement. As you consider this case, you ask yourself whether this patient is in shock, and if he is, what are the specific causative pathophysiologic mechanisms? You review which diagnostic tests are indicated to assist with the differential diagnosis of shock and you consider options for the initial management of this patient.
Tell us your diagnosis in the comments box below and check back regularly to see what other emergency physicians have said.? The correct diagnosis will be published on March 8!
Last Updated on January 26, 2023