Diurnal variation in daytime sleepiness of patients with sleep apnea syndrome

Jun 6, 2002Psychiatry and clinical neurosciences

Daytime sleepiness changes throughout the day in people with sleep apnea

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Abstract

Sleep latencies in men with sleep apnea syndrome increased from 3.4 minutes in the morning to 9.3 minutes by late afternoon.

Daytime sleepiness is more pronounced in the morning compared to the afternoon and evening.
Measurements were taken at five intervals throughout the day.
A significant increase in sleep latency was observed across the day (P < 0.05).
The average age of participants was 41.7 years with a mean body mass index of 30.0 kg/m2.

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Diurnal variations in daytime sleepiness were studied in 26 men with sleep apnea syndrome (SAS) [age, 41.7 +/- 9.9 years (mean +/- SD); body mass index, 30.0 +/- 6.2 kg/m2; Epworth Sleepiness Score, 8.7 +/- 4.1; apnea-hypopnea index, 50.2 +/- 22.0]. Sleep latencies measured at 09.00 h, 11.00 h, 13.00 h, 15.00 h, and 17.00 h were 3.4 +/- 3.6 min, 4.7 +/- 5.5 min, 5.2 +/- 4.4 min, 5.3 +/- 5.4 min, and 9.3 +/- 7.2 min, respectively (ANOVA, P < 0.05). Daytime sleepiness in patients with SAS was more pronounced in the morning than in the afternoon and evening.

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Diurnal variation in daytime sleepiness of patients with sleep apnea syndrome

Abstract

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