These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Variation in the duration of arousal in obstructive sleep apnea.
    Author: Nigro CA, Rhodius EE.
    Journal: Med Sci Monit; 2005 Apr; 11(4):CR188-92. PubMed ID: 15795699.
    Abstract:
    BACKGROUND: The aim of this study was to evaluate the relationship between the duration of arousal and the type, duration and minSaO(2) of apneas/hypopneas, and the time of night and sleep stage when they occurred. MATERIAL/METHODS: We measured the duration of arousals associated with apneas (A) and hypopneas (H) in 10 polysomnographic recording. Arousals were categorized as: 1) Short Electroencephalographic Arousal (SEA: 3-15 s) and 2) Awakenings (>15 s). The dependent variable for multiple logistic regression analysis was duration of arousal (0 = 3-11 s, 1 = >11 s); the independent variables were event (0 = H, 1 = A), event duration (0 = 10-20 s, 1 = >20 s), sleep stage (0 = REM, 1 = NREM 1-2); minSaO(2) (0 = 86%, 1 = <86%) and time of night (0 = at or before 3:00 AM, 1 = after 3:00 AM). RESULTS: We analyzed 1536 apneas and hypopneas. 80.3% had arousal, 61% SEA and 19.3% awakenings. The median duration of arousal was higher in apneas (A: 12 s, H: 9.2 s, p<0.001). The apneas and events >20 s with a minSaO(2) <86% had a higher probability of arousal >11 s (apnea: OR 2.1, p<0.001; events >20 s: OR 1.5, p<0.01; minSaO(2) <86%: OR 1.4, p<0.05). CONCLUSIONS: Arousals were greater in apneas than in hypopneas. Apneas and events >20 s with a minSaO(2) <86% were associated more frequently with arousal >11 s.
    [Abstract] [Full Text] [Related] [New Search]