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Related Experiment Videos

Cognitive function is minimally impaired after ambulatory surgery.

Barnaby Ward1, Charles Imarengiaye, Javad Peirovy

  • 1Department of Anesthesia, Toronto Western Hospital, University Health Network, Toronto, Ontario M5T 2S8, Canada.

Canadian Journal of Anaesthesia = Journal Canadien D'Anesthesie
|December 6, 2005
PubMed
Summary

General anesthesia (GA) showed a small, statistically significant increase in cognitive failures three days post-procedure compared to local anesthesia (LA). This cognitive impairment following GA was of doubtful clinical significance.

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Area of Science:

  • Anesthesiology
  • Cognitive Neuroscience
  • Surgical Outcomes

Background:

  • Postoperative cognitive dysfunction (POCD) is a concern after anesthesia.
  • Ambulatory surgery aims for rapid recovery with minimal side effects.
  • Understanding cognitive changes after general anesthesia (GA) is crucial.

Purpose of the Study:

  • To quantify subjective cognitive failures within three days of general anesthesia (GA) for ambulatory surgery.
  • To compare cognitive function after GA versus local anesthesia (LA).

Main Methods:

  • 258 patients receiving GA and 250 receiving LA for ambulatory surgery were recruited.
  • The Cognitive Failures Questionnaire (CFQ) was administered pre-procedure and on postoperative day three.
  • CFQ scores were analyzed to assess changes in subjective cognitive function.

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Main Results:

  • Groups were similar demographically, though LA had more ASA I patients and shorter procedures.
  • Median preoperative CFQ scores were identical between GA and LA groups (26).
  • Postoperative CFQ scores increased slightly but significantly in the GA group (28) compared to the LA group (25).

Conclusions:

  • A statistically significant, though small, impairment in cognitive function was observed three days after GA, but not LA.
  • The observed cognitive impairment after GA is likely of doubtful clinical significance.
  • Current ambulatory anesthesia practices may result in less delayed cognitive impairment than previously reported.