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Acute Sleep Deprivation is Associated with Increased Electrocardiographic P-Wave Dispersion in Healthy Young Men and Women
Article first published online: 27 MAR 2008
2008, The Authors. Journal compilation ©2008, Blackwell Publishing, Inc.
Pacing and Clinical Electrophysiology
Volume 31, Issue 4, pages 438–442, April 2008
How to Cite
SARI, I., DAVUTOGLU, V., OZBALA, B., OZER, O., BALTACI, Y., YAVUZ, S. and AKSOY, M. (2008), Acute Sleep Deprivation is Associated with Increased Electrocardiographic P-Wave Dispersion in Healthy Young Men and Women. Pacing and Clinical Electrophysiology, 31: 438–442. doi: 10.1111/j.1540-8159.2008.01013.x
- Issue published online: 27 MAR 2008
- Article first published online: 27 MAR 2008
- Received October 15, 2007; revised December 1, 2007; accepted December 18, 2007.
- acute sleep deprivation;
- P-wave dispersion;
Background: Sleep deprivation (SD) is associated with worse cardiovascular outcome including mortality. Prolonged P-wave duration and P-wave dispersion (Pd) are known to represent inhomogeneous conduction of sinus impulses and are known to be electrophysiologic predictors of atrial fibrillation. Pd in normal subjects has been reported to be influenced by the autonomic tone. Because autonomic tone is affected by sleep and sleep duration, we evaluated the effect of acute SD on P-wave duration and Pd in healthy young adults and whether the effect was gender selective.
Methods: We obtained electrocardiograms of 37 healthy young volunteers (age: 28.45 ± 7.97; 11 women) after a night of regular sleep and repeated after a night with sleep debt. We measured minimum and maximum P-wave durations (Pmin, Pmax) and Pd in milliseconds.
Results: Average sleep time of the subjects were 7.7 ± 0.8 hours during regular sleep and 1.7 ± 1.6 hours during a night of sleep debt (P < 0.001). Subjects had significantly lower values of Pmin in milliseconds after a night of sleep debt when compared to regular sleep (65.13 ± 8.03 vs 74.86 ± 10.95; P < 0.001), whereas they had significantly higher values of Pmax and Pd (102.16 ± 9.46 vs 95.13 ± 11.21; P < 0.001 and 37.02 ± 8.11 vs 20.27 ± 11.42; P < 0.001, respectively). In Pearson's correlation analysis Pmin was positively and Pmax and Pd were negatively correlated with sleep time (P < 0.001, r = 0.465; P = 0.003, r =−0.336 and P < 0.001, r =–0.698 respectively). Effect of SD on P-wave duration and Pd was similar for both men and women.
Conclusions: In conclusion, prolongation of Pmax and Pd in acute SD suggests that acute SD might contribute to development and/or recurrence of atrial fibrillation.