system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 30-year-old woman presents to the emergency department with breathlessness for the last hour. She is unable to provide any history due to her dyspnea. Her vitals include: respiratory rate 20/min, pulse 100/min, and blood pressure 144/84 mm Hg. On physical examination, she is visibly obese, and her breathing is labored. There are decreased breath sounds and hyperresonance to percussion across all lung fields bilaterally. An arterial blood gas is drawn, and the patient is placed on inhaled oxygen. Laboratory findings reveal:
pH 7.34
pO2 63 mm Hg
pCO2 50 mm Hg
HCO3 22 mEq/L
Her alveolar partial pressure of oxygen is 70 mm Hg. Which of the following is the most likely etiology of this patient’s symptoms?
assistant
Alveolar hypoventilation