| Single-breath vital capacity high concentration sevoflurane induction in children: with or without nitrous oxide? | |
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MedLine Citation:
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PMID: 22986418 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: /st>Single-breath vital capacity inhalation induction with high concentration sevoflurane (SBVC-HC) is a rapid and 'needleless' technique, preferred and well tolerated in the cooperative child. The addition of nitrous oxide may speed up induction by its second gas effects. Previous studies done in children looking at the effect of N(2)O on this technique lacked power and showed conflicting results. This study aims to investigate the effect of N(2)O on induction time for SBVC-HC sevoflurane induction in children. METHODS: /st>Eighty unpremedicated, ASA I and II children, aged 5-15 yr having elective surgical procedures under general anaesthesia, were recruited and randomized to: Group A: 8% sevoflurane in O(2) 6 litre min(-1), and Group B: 8% sevoflurane in N(2)O 4 litre min(-1) and O(2) 2 litre min(-1). The primary outcome was the time to 'loss of eyelash reflex'. The time to return of 'regular respiration' and 'conjugate gaze' were also noted. RESULTS: /st>The difference in the 'time to loss of eyelash reflex' was small but statistically significant. Group B: mean duration 53.6 s, standard deviation (sd) 16.1, compared with Group A: 63.5 s, sd 16.1 (mean difference 9.9, 95% confidence interval 2.5-17.3, P=0.01). Differences in the time to return of 'regular breathing' and 'conjugate gaze' were not statistically significant. Patients receiving N(2)O had less excitatory movements (P=0.007), but incidence of other adverse events was low and did not differ significantly between both groups. More than 94% of children would choose this method of induction again in both groups. CONCLUSIONS: /st>We conclude that for SBVC-HC sevoflurane induction in children, the addition of N(2)O resulted in faster loss of consciousness and reduced excitatory movements. |
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Authors:
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S Y Lee; S L Cheng; S B Ng; S L Lim |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-9-17 |
Journal Detail:
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Title: British journal of anaesthesia Volume: - ISSN: 1471-6771 ISO Abbreviation: Br J Anaesth Publication Date: 2012 Sep |
Date Detail:
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Created Date: 2012-9-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372541 Medline TA: Br J Anaesth Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Paediatric Anaesthesia, KK Women's and Children's Hospital, 100 Bukit Timah Road, Children's Tower Level 2, Singapore 229899, Singapore. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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