obstructive sleep apnea | obstructive sleep apnea syndrome | OSAS | OSADEFINITION respiratory condition in which the throat repeatedly narrows or closes during sleep REFERENCE BBC "Health" website , http://www.bbc.co.uk/health/conditions/sleepapnoea1.shtml , [21.04.2008]
COMMENT Air is blocked from getting into the lungs, and low oxygen levels cause the brain to wake the person up.