Document Detail


An Evaluation of Peak Inspiratory Pressure, Tidal Volume and Ventilatory Frequency During Ventilation With a Neonatal Self Inflating Bag Resuscitator.
MedLine Citation:
PMID:  22005778     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Although the self inflating bag is widely used in the hospital setting, variability of delivered ventilatory parameters is usually high, which might result in both hypoventilation and lung injury. The aims of this study were to assess possible sources of the high variability and to evaluate adequacy of obtained values in relation to the recommended values for neonatal resuscitation. METHODS: This is an experimental study in which 172 health professionals (physicians, resident physicians, physiotherapists, nurses and nursing technicians) who work with neonatal intensive care manually ventilated a test lung (adjusted to simulate the lungs of an intubated term newborn) with a self-inflating bag in 5 different handling techniques: using 10, 5, 4, 3 and 2 fingers. Delivered values of peak inspiratory pressure (PIP), tidal volume (VT) and ventilatory frequency (Vf) were compared taking into account the different handling modalities and professions by analysis of variance for repeated measured. Chi-square, Friedman's and Fisher's exact tests were performed to compare the delivered and standard values. RESULTS: PIP and VT were significantly affected by the handling technique, with higher values for a greater number of fingers used for ventilation. Profession also influenced VT and Vf significantly: physiotherapists tended to deliver higher volumes and lower rates. Nevertheless, it was observed high variability of all studied ventilatory parameters and overall inadequacy of obtained values. Most volunteers delivered excessive pressures and volumes at insufficient ventilatory frequency. CONCLUSIONS: Delivered values seem to depend on operator's individual and professional differences, as well as to number of fingers used to compress the bag. However, from the clinical point of view, it is important to point out the high occurrence of inadequatedelivered values regardless of handling technique and profession.
Authors:
Mariana Almada Bassani; Francisco Mezzacappa Filho; Maria Regina Coppo; Sérgio Martins Marba
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-13
Journal Detail:
Title:  Respiratory care     Volume:  -     ISSN:  0020-1324     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7510357     Medline TA:  Respir Care     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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