Document Detail

Use of the laryngeal mask for closed circuit anesthesia.
MedLine Citation:
PMID:  8987039     Owner:  NLM     Status:  MEDLINE    
We examined whether the laryngeal mask could be used effectively in 70 patients breathings spontaneously during closed-circuit anesthesia. After administration of oxygen 101.min-1, anesthesia was induced and the laryngeal mask inserted. After 6 min of denitrogenation (3.51.min-1 nitrous oxide and 1.51.min-1 oxygen), the fresh-gas flow was decreased to the minimum required to maintain refilling of a ventilator bellows (Carden Ventmasta); nitrous oxide was turned off. A vaporiser outside the breathing system was set either by observing an end-tidal agent monitor or at 3-5 times greater than the required end-tidal concentration. The total fresh gas flow, hemodynamics and respiratory variables were monitored. Several types of operations were performed and lasted 9-126 min (mean 37 min). The average total fresh gas flow during the closed circuit period was 340 ml.min-1 (range 200-500 ml.min-1). Blood pressure, heart rate and respiration were stable throughout anesthesia and there were no major side effects attributable to the technique. We believe that closed-circuit anesthesia in patients breathing spontaneously through the laryngeal mask, as described here, can be used safely, conveniently and effectively. This technique is suitable for surgical operations of short duration.
M R Stacey; S Morris; T Asai
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Middle East journal of anaesthesiology     Volume:  13     ISSN:  0544-0440     ISO Abbreviation:  Middle East J Anaesthesiol     Publication Date:  1996 Oct 
Date Detail:
Created Date:  1997-03-19     Completed Date:  1997-03-19     Revised Date:  2014-10-10    
Medline Journal Info:
Nlm Unique ID:  8604187     Medline TA:  Middle East J Anaesthesiol     Country:  LEBANON    
Other Details:
Languages:  eng     Pagination:  593-604     Citation Subset:  IM    
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MeSH Terms
Anesthesia, Closed-Circuit / instrumentation*,  methods
Anesthetics, Inhalation
Laryngeal Masks*
Middle Aged
Monitoring, Physiologic
Reg. No./Substance:
0/Anesthetics, Inhalation; 91I69L5AY5/Enflurane; CYS9AKD70P/Isoflurane

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

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