What is the most common cause of obstructive sleep apnea?: (A) Craniofacial abnormalities, (B) Hypothyroidism, (C) Alcoholism, (D) Acromegaly
Answer is A. Craniofacial abnormalities are common in O.S.A in non-obese patients and children. Non structural risk factors for OSA include: Obesity, central fat distribution Male sex, middle age Alcohol use, sedative use, smoking Supine sleep position