Document Detail


Comparison of manually triggered ventilation and bag-valve-mask ventilation during cardiopulmonary resuscitation in a manikin model.
MedLine Citation:
PMID:  21958929     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: : To compare a novel, pressure-limited, flow adaptive ventilator that enables manual triggering of ventilations (MEDUMAT Easy CPR, Weinmann, Germany) with a bag-valve-mask (BVM) device during simulated cardiac arrest. METHODS: : Overall 74 third-year medical students received brief video instructions (BVM: 57s, ventilator: 126s), standardised theoretical instructions and practical training for both devices. Four days later, the students were randomised into 37 two-rescuer teams and were asked to perform eight minutes of cardiopulmonary resuscitation (CPR) on a manikin using either the ventilator or the BVM (randomisation list). Applied tidal volumes (V(T)), inspiratory times and hands-off times were recorded. Maximum airway pressures (P(max)) were measured with a sensor connected to the artificial lung. Questionnaires concerning levels of fatigue, stress and handling were evaluated. V(T), pressures and hands-off times were compared using t-tests, questionnaire data were analysed using the Wilcoxon test. RESULTS: : BVM vs. ventilator (mean±SD): The mean V(T) (408±164ml vs. 315±165ml, p=0.10) and the maximum V(T) did not differ, but the number of recorded V(T)<200ml differed (8.1±11.3 vs. 17.0±14.4 ventilations, p=0.04). P(max) did not differ, but inspiratory times (0.80±0.23s vs. 1.39±0.31s, p<0.001) and total hands-off times (133.5±17.8s vs. 162.0±11.1s, p<0.001) did. The estimated levels of fatigue and stress were comparable; however, the BVM was rated to be easier to use (p=0.03). CONCLUSION: : For the user group investigated here, this ventilator exhibits no advantages in the setting of simulated CPR and carries a risk of prolonged no-flow time.
Authors:
Sebastian Bergrath; Rolf Rossaint; Henning Biermann; Max Skorning; Stefan K Beckers; Daniel Rörtgen; Jörg Ch Brokmann; Christian Flege; Christina Fitzner; Michael Czaplik
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-26
Journal Detail:
Title:  Resuscitation     Volume:  -     ISSN:  1873-1570     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0332173     Medline TA:  Resuscitation     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Ireland Ltd.
Affiliation:
Emergency Medical Care Section, Department of Anaesthesiology, University Hospital Aachen, RWTH Aachen University, Aachen, Germany.
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