Step 1

Pathology 23

A 58-year-old man presents to the emergency department with shortness of breath, chest pain that worsens on inspiration, and diaphoresis for the past 3 hours. Past medical history is significant for hypertension and gout. He works as a truck driver. Vitals signs are temperature 37.0°C (98.6°F), blood pressure 130/100 mmHg, heart rate 109 beats/minute, and respirations 22/minute. Arterial Blood Gas (ABG) shows the following: pH = 7.60, pCO2 = 28 mmHg, pO2 = 68 mmHg, HCO3 = 24 meq/L.

Which of the following is the most likely underlying etiology for this patient’s illness?

  • A) Acute pulmonary thromboembolism
  • B) Atypical Pneumonia
  • C) Ethylene glycol poisoning
  • D) Obstructive sleep apnea
  • E) Pseudohypoaldosteronism
  • F) Severe salicylate poisoning


Frederico Filho


Dr. Ted O'Connell

Last updated

Feb 20, 2023


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