Document Detail

Nitrous oxide contamination during out-patient cryosurgery.
MedLine Citation:
PMID:  3127489     Owner:  NLM     Status:  MEDLINE    
Nitrous oxide concentrations have been measured spectrophotometrically in an out-patient clinic to assess pollution during simulated cryosurgery. Unacceptable levels, in excess of 2,000 ppm, were achieved during freezing and thawing and concentrations decreased only to 400 ppm when simple measures were taken to ventilate the clinic. The apparatus required a flow-rate of 11 l/min. It is concluded that scavenging apparatus should be used during cryosurgery with nitrous oxide if treatment is prolonged. Liquid nitrogen systems are preferable if excellent ventilation and scavenging apparatus are not available.
J P Shepherd; D C Jones
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of oral and maxillofacial surgery     Volume:  17     ISSN:  0901-5027     ISO Abbreviation:  Int J Oral Maxillofac Surg     Publication Date:  1988 Feb 
Date Detail:
Created Date:  1988-05-04     Completed Date:  1988-05-04     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8605826     Medline TA:  Int J Oral Maxillofac Surg     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  4-5     Citation Subset:  D; IM    
Department of Oral Medicine and Oral Surgery, University of Bristol Dental School and Hospital, UK.
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MeSH Terms
Air Pollutants / analysis*
Cryosurgery / instrumentation*,  methods
Nitrous Oxide / analysis*
Spectrophotometry, Infrared
Time Factors
Reg. No./Substance:
0/Air Pollutants; 10024-97-2/Nitrous Oxide

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

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