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Low-flow anaesthesia. Practice, cost implications and acceptability.

S M Cotter1, A J Petros, C J Doré

  • 1Centre for Pharmacy Practice, School of Pharmacy, London.

Anaesthesia
|December 1, 1991
PubMed
Summary
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Low-flow anesthesia, using 4 liters/minute or less fresh gas flow, significantly reduces volatile anesthetic use and costs. This method is acceptable to anesthesiologists and offers substantial financial savings.

Area of Science:

  • Anesthesiology
  • Pharmacoeconomics

Background:

  • Volatile anesthetics are commonly used in inhalational anesthesia.
  • Optimizing anesthetic delivery can lead to cost savings and reduced environmental impact.

Purpose of the Study:

  • To assess the acceptability of routine low-flow anesthesia (≤4 L/min fresh gas flow).
  • To determine the financial savings from reduced volatile anesthetic consumption with low-flow anesthesia.

Main Methods:

  • An 8-week survey and data collection on 286 patients undergoing routine operative procedures.
  • Measurement of hourly volatile anesthetic consumption (isoflurane, enflurane) with conventional vs. low fresh gas flows.
  • Assessment of anesthesiologists' acceptance via questionnaire.

Main Results:

Related Experiment Videos

  • A 54.7% reduction in isoflurane and 55.9% reduction in enflurane consumption was observed.
  • 21 out of 28 anesthesiologists surveyed were willing to adopt low-flow anesthesia routinely.
  • Estimated annual savings of £26,870 at Northwick Park Hospital.

Conclusions:

  • Routine implementation of low-flow anesthesia is acceptable to anesthesiologists.
  • Low-flow anesthesia significantly reduces volatile anesthetic use and offers considerable financial benefits.