Document Detail

Field anesthesia machine ventilator oxygen consumption in models of high and low pulmonary compliance.
MedLine Citation:
PMID:  25469969     Owner:  NLM     Status:  In-Data-Review    
Field anesthesia machine ventilators powered by compressed gas are designed for remote locations that may lack a pipeline supply of O2. This study determined the O2 consumption of the compPAC ventilator powered by E cylinders when ventilating the Vent Aid Training Test Lung model of high (HC) and low (LC) pulmonary compliance. Consumed O2 was calculated after measuring the mass of O2 depleted from the E cylinder. Three tidal volumes (VT) were tested (500, 750, and 1000 mL). The HC and LC settings were 0.100 and 0.020 L/cm H2O, respectively. N = 5 in each group, respiratory rate = 10 bpm, and I:E ratio = 1:2. Data were collected for 20 minutes per run. O2 consumption was directly proportional to VT and inversely proportional to compliance. The amount of O2 consumed by the ventilator ranged from 2.19 (interquartile range [IQR] 2.18-2.26) L/min in the HC-500 mL VT group to 3.76 (IQR 3.76-3.79) L/min in the HC-1000 mL VT group (P = 0.027) and from 2.63 (IQR 2.60-2.66) L/min in the LC-500 VT mL group to 4.89 (IQR 4.81-5.05) L/min in the LC-1000 mL VT group (P = 0.027). The volume of ventilator drive gas was less than minute ventilation (VE) in all groups.
Dale F Szpisjak; Cheryl M Starrett-Keller
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Military medicine     Volume:  179     ISSN:  1930-613X     ISO Abbreviation:  Mil Med     Publication Date:  2014 Dec 
Date Detail:
Created Date:  2014-12-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984771R     Medline TA:  Mil Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1465-8     Citation Subset:  IM    
Copyright Information:
Reprint & Copyright © 2014 Association of Military Surgeons of the U.S.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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