Coasting: Worth the Effort?

Hendrickx, J. F.A., de Cooman, S., van Zundert, A. A. J., Grouls, R. E. J., Mortier, E. and de Wolf, A. M. (2011) Coasting: Worth the Effort?. Acta Anaesthesiologica Belgica, 62 3: 147-150.

Author Hendrickx, J. F.A.
de Cooman, S.
van Zundert, A. A. J.
Grouls, R. E. J.
Mortier, E.
de Wolf, A. M.
Title Coasting: Worth the Effort?
Journal name Acta Anaesthesiologica Belgica   Check publisher's open access policy
ISSN 0001-5164
Publication date 2011
Year available 2011
Sub-type Critical review of research, literature review, critical commentary
Open Access Status
Volume 62
Issue 3
Start page 147
End page 150
Total pages 4
Place of publication Brussels, Belgium
Publisher Acta Medica Belgica
Language eng
Formatted abstract
A new anesthesia machine incorporates a "coasting mode", but the extent to which a coasting technique can maintain anesthesia at the end of a procedure under optimal conditions (closed circuit anesthesia) remains unknown. Sixty-nine patients undergoing peripheral or abdominal surgery were assigned to 1 of 9 groups, depending on when desflurane coasting (in O2/air) was started (after 4, 9, 16, 25, 36, 49, 64, 81, or 100 min). The end-expired desflurane concentration was maintained at 4.5% in O2/air prior to coasting with a conventional anesthesia machine. After initiating coasting (using a closed-circuit technique), we examined when the end-expired desflurane concentration reached 70, 60, 50, and 40% of its value during maintenance (= 30, 40, 50 and 60% decrement times, respectively). Decrement times increased with increasing duration of anesthesia, and varied widely. After 64 min of maintenance anesthesia, the end-expired desflurane concentration remained at or above 70, 60, 50, and 40% of its maintenance value during 10.3 +/- 2.3, 16.0 +/- 3.5, 25.0 +/- 5.9, and 45.4 +/- 19.3 min, respectively (average +/- standard deviation). Coasting can briefly maintain anesthesia towards the end of a procedure. While savings with an automated coasting mode are likely to be modest per patient, they may become substantial when multiplied by the number of procedures per day per operating room with no increase in the clinical workload of the anesthesia provider.
Keyword Closed circuit anesthesia
Inhaled anesthetics
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: School of Medicine Publications
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Created: Tue, 12 May 2015, 14:54:35 EST by Andre Van Zundert on behalf of Anaesthesiology and Critical Care - RBWH