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Related Experiment Videos

Progressive decrease in glucose clearance during surgery.

Z Sicardi Salomón1, P Rodhe, R G Hahn

  • 1Department of Anaesthesia, South Hospital, S-118 83 Stockholm, Sweden. zulesicardi@hotmail.com

Acta Anaesthesiologica Scandinavica
|August 2, 2006
PubMed
Summary
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Surgery and anesthesia impair glucose clearance, with even minor procedures significantly affecting glucose metabolism. The full hyperglycemic effect develops slowly, regardless of surgical extent.

Area of Science:

  • Metabolic Medicine
  • Surgical Physiology
  • Anesthesiology

Background:

  • Anesthesia and surgical interventions are known to reduce the body's ability to clear glucose.
  • The impact of surgical magnitude on glucose load clearance requires further investigation.

Purpose of the Study:

  • To investigate how surgical procedures of varying magnitudes influence the clearance of an intravenously administered glucose load.
  • To compare glucose clearance and endogenous glucose production across different surgical severities.

Main Methods:

  • 26 patients received an 80-minute intravenous infusion of buffered glucose (10 ml/kg/h of 2.5%).
  • Infusions commenced with skin incision during minor, medium-range, or major surgery.
  • Plasma glucose levels were monitored throughout and after the infusion to assess glucose kinetics.

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Main Results:

  • Glucose clearance was significantly reduced post-infusion compared to during infusion, with reductions of 35% (minor), 63% (medium), and 40% (major) surgery.
  • Major surgery showed a less pronounced decrease in clearance, potentially due to epidural analgesia.
  • Endogenous glucose production decreased proportionally with glucose clearance in all groups.

Conclusions:

  • The hyperglycemic impact of anesthesia and surgery is a gradual process, not fully manifested within 80 minutes.
  • Even minor surgical trauma demonstrably affects glucose metabolism, highlighting the systemic effects of surgical stress.