USMLE Forums - View Single Post - Repeated USMLE Questions Step 1- 276
View Single Post
Old 11-28-2019
sohag100 sohag100 is offline
USMLE Forums Master
Steps History: 1+CK+CS+3
Posts: 1,332
Threads: 1274
Thanked 195 Times in 173 Posts
Reputation: 205
Default Repeated USMLE Questions Step 1- 276

A 64-year-old man complains of severe headache, dizziness, nausea and deterioration of vision. Workup shows a decrease in oxygen carrying capacity with no change in PO2 of arterial blood.
Which of the following is most likely responsible for this patient's symptoms?
A- Ozone
B- Carbon monoxide (CO)
C- Sulfur dioxide
D- Nitrogen
Reply With Quote