Pneumonologia polska
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Pneumonologia polska · Mar 1989
Comparative Study[Polysomnographic diagnosis of obstructive sleep apnea syndrome].
All night polysomnographic studies performed in 149 patients with OSA syndrome revealed marked disturbances of the sleep structure and the disorders of breathing during sleep: obstructive apneas in all patients, hypopneas in 25% and central apneas in 12%. The mean apnea index was 68 +/- 29, the mean percent of sleep time spent in apnea 50 +/- 21%. ⋯ During obstructive apneas the typical arterial oxygen saturation was 82 +/- 9% in NON REM sleep and 71 +/- 17% in REM sleep; the lowest arterial oxygen saturation was 73 +/- 14% in NON REM sleep and 62 +/- 21% in REM sleep. Forty six percent of patients had apnea-related cardiac arrhythmias or conduction disturbances.