Which factors may augment the symptoms of patients with mild obstructive sleep apnea? 1. Excessive day-shift work 2. Sleep deprivation 3. Respiratory allergies 4. Scuba diving

a. 1 and 2 c. 3 and 4
b. 2 and 3 d. 1 and 4

ANS: B
Factors that may increase the symptoms of patients with mild obstructive sleep apnea include partial sleep deprivation, as with shift work; respiratory allergies; exposure to smoke; and ascent to altitude.