Use of pulse transit time as a measure of autonomic arousals in patients with obstructive sleep apnea.
- Author:
Yi XIAO
1
;
Xu ZHONG
;
Rong HUANG
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Arousal; physiology; Autonomic Nervous System; physiopathology; Electrocardiography; Electroencephalography; Humans; Middle Aged; Pulse; Sleep Apnea Syndromes; physiopathology; Sleep Apnea, Obstructive; physiopathology; Sleep Stages; physiology
- From: Chinese Medical Sciences Journal 2007;22(2):89-92
- CountryChina
- Language:English
-
Abstract:
OBJECTIVETo evaluate the feasibility of pulse transit time (PTT) arousals as an index of sleep fragmentation in patients with obstructive sleep apnea hypopnea syndrome (OSAHS).
METHODSIndividuals referred for evaluation of possible OSAHS underwent overnight polysomnography (PSG). Three conventional indices of sleep fragmentation [electroencephalography (EEG) arousals, apnea/hypopnea index (AHI) , oxygen desaturation index (ODI)] , PTT arousals, and Epworth sleepiness scale (ESS) were compared.
RESULTSPTT arousals were positively correlated with EEG arousals (r = 0.746, P < 0.001), AHI (r = 0.786, P < 0.001), and ODI (r = 0.665, P < 0.001) , respectively. But, both PTT arousals and EEG arousals had no correlation with ESS (r = 0.432, P = 0.201; r = 0.196, P = 0.591, respectively).
CONCLUSIONPTT arousals are correlated well with other standard measures estimating severity of OSAHS and potentially a non-invasive marker with which to measure the sleep fragmentation in patients with OSAHS.
