Sleep apnea syndrome.

Sleep apnea syndrome is estimated to affect as many as 2 to 3 percent of the adult male population. Excessive snoring and daytime sleepiness are but a few of the many clues to diagnosis. The hypoxemia occurring as a result of apnea may lead to pulmonary hypertension. Depressed respiratory center neural output or upper airway occlusion during sleep may cause the apnea. There are a number of treatment options available.