Document Detail

A simple method for estimating the ventilatory response to CO2 in infants.
MedLine Citation:
PMID:  6404204     Owner:  NLM     Status:  MEDLINE    
We report a new noninvasive method for the estimation of CO2 response in uncooperative infants. By comparing the changes in inspired minus alveolar PO2 breathing air and 4% CO2, an indirect estimate of increase in alveolar ventilation can be obtained. This report is a comparison of 3 possible indirect methods: changes in inspired minus alveolar PCO2 (delta AIPCO2), changes in inspired minus alveolar PO2 (delta IAPO2), and changes in transcutaneous PO2 (TcPO2) with the standard steady-state method for ventilatory response to CO2. Twenty-one comparisons were made, 16 on 7 preterm infants, and 5 on an older child (at 2.5 and at 4 yr of age), with central hypoventilation syndrome. We found that changes in delta IAPO2 gave the best correlation with changes in minute ventilation (r = 0.83, p less than 0.001), that changes in delta AIPCO2 were less valid (r = 0.66, p less than 0.001), and that there was no correlation with changes in TcPO2. We conclude that changes in inspired PO2 minus alveolar PO2 can be used in uncooperative infants to estimate the ventilatory response to CO2.
J P Brady; M Durand; E McCann
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The American review of respiratory disease     Volume:  127     ISSN:  0003-0805     ISO Abbreviation:  Am. Rev. Respir. Dis.     Publication Date:  1983 Apr 
Date Detail:
Created Date:  1983-05-27     Completed Date:  1983-05-27     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0370523     Medline TA:  Am Rev Respir Dis     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  422-4     Citation Subset:  AIM; IM    
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MeSH Terms
Carbon Dioxide*
Child, Preschool
Infant, Newborn
Lung Volume Measurements / methods*
Partial Pressure
Pulmonary Alveoli / physiology
Pulmonary Gas Exchange
Grant Support
Reg. No./Substance:
124-38-9/Carbon Dioxide

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

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