Which is not true of obstructive sleep apnea?: (A) Nocturnal asphyxia, (B) Alcoholism is a cofactor, (C) Prone to hypeension, (D) Spirometry is diagnostic
Answer is D. An overnight sleep study, or polysomnography, is required to diagnose OSA. PSG: in-laboratory measurement of sleep architecture and EEG arousals, eye movements, oximetry, snoring, and leg movements OSAHS raises 24-h mean blood pressure.