An obese mother suffers from OSAS. Which of the following inv is best for her?
a. ABG
b. Overnight pulse-oximetry
c. Polysomnography
d. EEG
answer: B.....PSG and OPO can both diagnose OSAS, PSG is the investigation of choice but has restricted availability and will require her to leave her children and spend a night in a sleep clinic
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