Indirect calorimetry in mechanically ventilated infants and children
| Autor: | Walter J. Chwals, Kevin P. Lally, Morton M. Woolley |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Artificial ventilation
medicine.medical_specialty Critical Illness medicine.medical_treatment Critical Care and Intensive Care Medicine Tertiary care Mean difference Oxygen Consumption Intubation Intratracheal medicine Humans Intubation Prospective Studies Child Endotracheal tube Critically ill business.industry musculoskeletal neural and ocular physiology Infant Newborn Infant Reproducibility of Results Calorimetry Indirect Respiration Artificial Surgery Child Preschool Anesthesia Cuff Equipment Failure Endotracheal tube cuff business human activities circulatory and respiratory physiology |
| Zdroj: | Critical Care Medicine. 20:768-770 |
| ISSN: | 0090-3493 |
| DOI: | 10.1097/00003246-199206000-00012 |
| Popis: | OBJECTIVE To establish the effect of an audible airleak (around an endotracheal tube) on oxygen consumption (VO2) measurements in pediatric ICU patients. DESIGN Prospective trial comparing VO2 measurements before and after deflation of the endotracheal tube cuff. SETTING Pediatric ICU in a large pediatric tertiary care center. PATIENTS Twenty critically ill infants and children receiving mechanical ventilatory support via cuffed endotracheal tube. INTERVENTIONS Deflation of endotracheal tube cuff. MEASUREMENTS AND MAIN RESULTS The presence (group 1, n = 9) or absence (group 2, n = 11) of an audible airleak with the cuff deflated was confirmed by two independent observers. The percent difference in VO2 was calculated for both groups using the following formula: ([VO2 cuff up - VO2 cuff down]/VO2 cuff up) x 100. An audible airleak associated with cuff deflation (group 1) caused a significant (p = .0012) reduction of VO2 by 45.6% (mean difference in VO2 = 45.6%). In contrast, with no audible airleak after cuff deflation (group 2), only minimal changes in VO2 (mean difference in VO2 = -0.4%) were observed. CONCLUSIONS These data suggest that if no audible airleak is detected, VO2 determined by indirect calorimetry may be reliably measured in infants and children with a noncuffed endotracheal tube. |
| Databáze: | OpenAIRE |
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