An 87-year-old woman is brought to hospital after being found by her adult daughter lying in bed and confused. She does not take any medications. Her vitals are: temperature 96.6F (35.9C), HR 98, BP 84/52. Intravenous infusion of 1L of Ringer lactate does not increase blood pressure. Pulmonary artery catheterization shows:
Cardiac output: ↑
Pulmonary capillary wedge pressure: ↓
Peripheral vascular resistance: ↓
Which of the following is the most likely diagnosis?
Gastrointestinal blood loss
Infarction of myocardium
Pulmonary thromboembolism
Systemic cytokine release
Vasovagal shock
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Cut-to-the-chase Answer (1:07):
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HY USMLE Answer (6:08):
