Document Detail

The mouth-to-bag resuscitator during standard anaesthesia induction in apnoeic patients.
MedLine Citation:
PMID:  19674827     Owner:  NLM     Status:  MEDLINE    
AIM: Ventilation of a non-intubated emergency patient by inexperienced rescuers with a standard bag-valve device may result in high inspiratory flow rates and subsequently high airway pressures with stomach inflation. Therefore, a self-inflating bag has been developed that requires lay rescuers to blow up a single-use balloon inside an adult bag-valve device, which, in turn, displaces air within the bag towards the patient. This concept has been compared to standard adult bag-valve devices earlier in bench models but not in patients. METHODS: An anaesthetist who was blinded to all monitor tracings ventilated the lungs of 40 apnoeic patients during routine anaesthesia induction either with a standard bag-valve device or with the mouth-to-bag resuscitator in a random order. Study endpoints were peak inspiratory flow rates, peak airway pressure, tidal volumes and inspiratory time. RESULTS: Peak inspiratory flow was 40+/-10lmin(-1) for the standard bag-valve device versus 33+/-13lmin(-1) for the mouth-to-bag resuscitator (P<0.0001); peak airway pressure was 17+/-5cmH(2)O versus 14+/-5cmH(2)O (P<0.0001); inspiratory tidal volume was 477+/-133ml versus 644+/-248ml (P<0.001) and inspiratory time was 1.1+/-0.3s versus 1.9+/-0.6s (P<0.0001). CONCLUSION: Employing the mouth-to-bag resuscitator during simulated ventilation of a non-intubated patient in respiratory arrest significantly decreased peak inspiratory flow and peak airway pressure and increased inspiratory tidal volume and inspiratory times compared to a standard bag-valve device.
Holger Herff; Peter Paal; Thomas Mitterlechner; Achim von Goedecke; Karl H Stadlbauer; Wolfgang G Voelckel; Angelika Zecha-Stallinger; Volker Wenzel
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-08-12
Journal Detail:
Title:  Resuscitation     Volume:  80     ISSN:  1873-1570     ISO Abbreviation:  Resuscitation     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-09-21     Completed Date:  2009-12-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0332173     Medline TA:  Resuscitation     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  1142-6     Citation Subset:  IM    
Department of Anesthesiology and Critical Care Medicine, Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck, Austria.
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MeSH Terms
Apnea / physiopathology,  therapy*
Pulmonary Ventilation
Respiration, Artificial / instrumentation*
Resuscitation / instrumentation*
Tidal Volume

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