Digital recording and analysis of esophageal pressure for patients with obstructive sleep apnea–hypopnea syndrome
- 5 May 2005
- journal article
- Published by Springer Science and Business Media LLC in Sleep and Breathing
- Vol. 9 (2), 64-72
- https://doi.org/10.1007/s11325-005-0015-0
Abstract
To evaluate sleep-related obstructive breathing events in patients with obstructive sleep apnea–hypopnea syndrome (OSAHS), we developed a technique for digital recording and analysis of esophageal pressure (Pes) and elucidated the Pes parameters. Pes was recorded overnight with a microtip-type pressure transducer in 74 patients with OSAHS. Simultaneously, in all patients digital polysomnography was recorded. The mean nadir end-apneic Pes swing (Pes Nadir) ranged from −20.2 to −147.4 cmH2O, with a mean of −53.6±2.9 cmH2O. Correlation of the mean Pes Nadir indicated a linear relationship with the mean ratio of maximal Pes swing to apnea duration (r 2=0.70) and the mean area of the Pes (Pes Area) (r 2=0.82). Significant correlations were noted between the mean Pes Nadir and apnea–hypopnea index (AHI, ranging from 7.9 to 109.5 per hour; r 2=0.66), minimum SpO2 (r 2=0.60), oxygen desaturation index (ODI) of more than 3 (r 2=0.65), arousal index (r 2=0.54), and between the mean Pes Area and AHI (r 2=0.63), minimum percutaneous arterial oxygen saturation (SpO2; r 2=0.57), ODI (r 2=0.69), and arousal index (r 2=0.41). Pes parameters were found to be significant in the evaluation of the severity of the respiratory effort during the sleep-related obstructive breathing events for patients with OSAHS.Keywords
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