Document Detail

Proportional positive airway pressure: a new concept to treat obstructive sleep apnoea.
MedLine Citation:
PMID:  11405527     Owner:  NLM     Status:  MEDLINE    
Proportional positive airway pressure (PPAP) was designed to optimize airway pressure for the therapy of obstructive sleep apnoea (OSA). In a randomized crossover prospective study, the clinical feasibility of PPAP and its immediate effects on the breathing disorder and sleep in comparison with continuous positive airway pressure (CPAP) was evaluated. Twelve patients requiring CPAP therapy underwent CPAP and PPAP titration in a random order. Obstructive and mixed respiratory events could be completely abolished with both forms of treatment. This efficacy could be achieved at a significantly lower mean mask pressure during PPAP titration (8.45+/-2.42 cmH2O) compared to CPAP (9.96+/-2.7 cmH2O) (p=0.002). The mean minimal arterial oxygen saturation (Sa,O2) (82.8+/-6.5%) on the diagnostic night increased significantly (p<0.001) to an average Sa,O2 of 93.35+/-1.71% and 93.19+/-2.9% during CPAP and PPAP titration. Total sleep time, slow wave sleep and rapid eye movement (REM) sleep increased significantly by the same amount during both CPAP and PPAP titration (p<0.001), while sleep stage nonrapid eye movement (NREM) 1 and 2 decreased. Six patients preferred the PPAP titration night, four patients did not have a preference, and two patients preferred CPAP. The present data show that proportional positive airway pressure is as effective as continuous positive airway pressure in eliminating obstructive events and has the same immediate effect on sleep. The lower average mask pressure during proportional positive airway pressure implies potential advantages compared to continuous positive airway pressure. Proportional positive airway pressure presents a new effective therapeutic approach to obstructive sleep apnoea.
J Juhász; H Becker; W Cassel; S Rostig; J H Peter
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The European respiratory journal     Volume:  17     ISSN:  0903-1936     ISO Abbreviation:  Eur. Respir. J.     Publication Date:  2001 Mar 
Date Detail:
Created Date:  2001-06-14     Completed Date:  2002-05-03     Revised Date:  2013-05-23    
Medline Journal Info:
Nlm Unique ID:  8803460     Medline TA:  Eur Respir J     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  467-73     Citation Subset:  IM    
Klinik für Schalfstörungen Bayerisch Gmain, Germany.
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MeSH Terms
Cross-Over Studies
Feasibility Studies
Middle Aged
Positive-Pressure Respiration / methods*
Prospective Studies
Sleep Apnea, Obstructive / therapy*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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