The criteria for diagnosing obstructive sleep apnea with polysomnography include which of the following?
a. More than 2 periods of obstructive apnea, of 15 seconds' duration each, per hour
b. More than 5 periods of obstructive apnea, of 10 seconds' duration each, per hour
c. At least 5 periods of obstructive apnea, of 30 seconds' duration each, per hour
d. At least 10 periods of obstructive apnea, of 20 seconds' duration each, per hour
ANS: B
Part of a diagnosis of obstructive sleep apnea requires that the patient demonstrate more than 5 periods of obstructive apnea, each of 10 seconds' duration, per hour of sleep.
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