Abstract
Obstructive sleep apnea syndrome (OSAS) in children is associated with changes in the structure of sleep. The possible effects of snoring on spindle activity have not been established. We analyzed the polysomnography recordings and sleep spindle activity in children with primary snoring and/or OSAS compared with healthy children. Fifty-one children were included; 8 had primary snoring, 16 had OSAS and snoring, 11 had OSAS without snoring, and 16 were healthy controls. The density (P = .034) and duration (P = .019) of sleep spindles were decreased in children with OSAS compared with controls. The sleep spindle activity did not show significant changes between children with primary snoring and healthy controls, or between OSAS with/without snoring. We conclude that it is not snoring per se but OSAS that affects sleep spindle activity. Obstructive sleep apnea syndrome with/without snoring deserves greater attention because it has different phenotypes of the disease with different pathophysiologies.
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