| Closed anesthesia with nitrous oxide. | |
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MedLine Citation:
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PMID: 9275707 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Anesthesia was induced with intravenous thiopental, fentanyl, and succinylcholine, and maintained with isoflurane, N2O-O2 and atracurium after denitrogenation in 20 adult patients. Inspired and end-tidal concentrations of O2, N2O, CO2, isoflurane and oxygen saturation of pulse oximeter (SpO2) were monitored. After intubation, N2O (750 ml/min) and O2 (250 ml/min) were administrated. When inspired N2O concentration (FiN2O) reached 60% the closed anesthesia was initiated by adjusting fresh gas flow rate in order to meet the oxygen demand of the patients. The N2O/O2 ratio was constantly kept at 0.7. The results revealed that during wash-in period, FiN2O increased, on average, to 30% at 3.83 min, 40% at 6.22 min, 50% at 14.13 min respectively. After 30 min of closed anesthesia, FiN2O decreased to 49.4%. It was 46.8% at 60 min. Thereafter it increased smoothly to 51.9% at 180 min. No hypoxia and hypercapnia occurred. Compared with commonly used high flow N2O-N2 inhalation, the technique of low flow wash-in and closed circuit maintenance with N2O-O2 may be less expensive and feasible and causes less pollution. |
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Authors:
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S Li; Z Wang; B Zeng; J Liu |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of Tongji Medical University = Tong ji yi ke da xue xue bao Volume: 16 ISSN: 0257-716X ISO Abbreviation: J. Tongji Med. Univ. Publication Date: 1996 |
Date Detail:
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Created Date: 1997-10-09 Completed Date: 1997-10-09 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8605495 Medline TA: J Tongji Med Univ Country: CHINA |
Other Details:
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Languages: eng Pagination: 126-8 Citation Subset: IM |
Affiliation:
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Department of Anesthesiology, Xiehe Hospital, Tongji Medical University, Wuhan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Abdomen
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surgery Adult Aged Anesthesia, Closed-Circuit Anesthetics, Inhalation* Female Humans Male Middle Aged Nitrous Oxide* |
| Chemical | |
Reg. No./Substance:
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0/Anesthetics, Inhalation; 10024-97-2/Nitrous Oxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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