Document Detail

The measurement of tidal volumes in spontaneously breathing children during general anaesthesia using a Haloscale infant Wright respirometer.
MedLine Citation:
PMID:  6524285     Owner:  NLM     Status:  MEDLINE    
The accuracy of tidal volume measurements made with a Wright Haloscale infant respirometer in children breathing spontaneously during general anaesthesia was assessed by a bench test. The tidal volumes and peak flow rates of 20 spontaneously breathing, anaesthetised children were measured with a pneumotachograph before and during surgery, and similar volumes, at the same flow rates, were delivered by a calibrated syringe simultaneously to the respirometer and a pneumotachograph. The results reveal that the mean (+/- s.d.) peak gas flow rates of children aged 6 years and less, 7.5 (+/- 1.6) and 9.3 (+/- 0.1) l/min before surgery and during surgery respectively, are significantly less than the peak flow rates, 11.3 (+/- 1.0) and 11.9 (+/- 1.5) before and during surgery, respectively, of children aged more than 6 years; and that the respirometer underestimates tidal volume by 10% when the peak flow rate is 11 l/min, and the percentage error in tidal volume estimation by the respirometer increases as the peak gas flow declines below 10 l/min.
R Meeke; W Wren; J Davenport; P O'Griofa
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta anaesthesiologica Scandinavica     Volume:  28     ISSN:  0001-5172     ISO Abbreviation:  Acta Anaesthesiol Scand     Publication Date:  1984 Dec 
Date Detail:
Created Date:  1985-03-19     Completed Date:  1985-03-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370270     Medline TA:  Acta Anaesthesiol Scand     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  696-9     Citation Subset:  IM    
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MeSH Terms
Anesthesia, Inhalation*
Child, Preschool
Intraoperative Period
Lung Volume Measurements / instrumentation*
Peak Expiratory Flow Rate
Postoperative Period
Respiration / drug effects
Tidal Volume / instrumentation*

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

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