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Evaluation of the auto continuous positive airway pressure efficacy by upper airway pressure measurement
Author(s) -
Miyazaki Soichiro,
Itasaka Yoshiaki,
Ishikawa Kazuo,
Togawa Kiyoshi
Publication year - 1999
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1046/j.1440-1819.1999.00553.x
Subject(s) - continuous positive airway pressure , medicine , obstructive sleep apnea , airway , apnea , anesthesia , apnea–hypopnea index , positive pressure , sleep apnea , polysomnography
The efficacy of auto continuous positive airway pressure (CPAP) was prospectively evaluated in 11 obstructive sleep apnea cases by the upper airway pressure measurement. Their apnea plus hypopnea index decreased from 68.3 ± 20.2/h to 0.5 ± 0.9/h during manually adjusted and 9.6 ± 14.5/h during auto CPAP. The intraesophageal pressure decreased from −88.0 ± 34.0 cmH 2 O to −11.9 ± 7.2 cmH 2 O during manually adjusted and −26.0 ± 13.7 cmH 2 O during auto CPAP. The manually adjusted CPAP level was 9.1 ± 1.7 cmH 2 O and the maximum pressure of the auto CPAP was 9.4 ± 2.0 cmH 2 O. Auto CPAP could automatically detect the optimal CPAP level. However, the efficacy of the auto CPAP was less than that of the manually adjusted CPAP.