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Related Experiment Videos

Preoperative fasting: an outdated concept?

J Diks1, D E C van Hoorn, R J Nijveldt

  • 1Department of Surgery, VU Medisch Centrum (Free University Medical Centre), Amsterdam, The Netherlands.

JPEN. Journal of Parenteral and Enteral Nutrition
|June 18, 2005
PubMed
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Preoperative fasting negatively impacts patients undergoing elective surgery. It depletes liver glycogen, leading to reduced muscle strength and impaired immune function, ultimately causing adverse surgical outcomes.

Area of Science:

  • Metabolic research
  • Surgical patient care
  • Immunology

Background:

  • Preoperative fasting is common practice for elective surgery.
  • Emerging evidence suggests fasting may induce an unfavorable metabolic state.
  • The impact on muscle glycogen and immune function requires further investigation.

Purpose of the Study:

  • To investigate the adverse metabolic consequences of preoperative fasting.
  • To examine the effects of fasting on liver glycogen, muscle glycogen, and immune system function.
  • To consolidate experimental and clinical data on the impact of fasting on surgical patients.

Main Methods:

  • Review of animal studies on glycogen metabolism and fasting.
  • Analysis of clinical data on patient outcomes after preoperative fasting.

Related Experiment Videos

  • Examination of the role of the mononuclear phagocytic system (MPS) in endotoxin restriction.

    • Main Results:

    • Fasting leads to rapid depletion of liver glycogen.
    • Post-surgery, muscle glycogen is mobilized, resulting in decreased muscle strength.
    • Impaired mononuclear phagocytic system (MPS) function due to fasting can compromise endotoxin control.

    Conclusions:

    • Preoperative fasting creates an unfavorable metabolic environment for surgical patients.
    • Fasting adversely affects muscle strength and immune response.
    • Combined evidence strongly indicates detrimental effects of preoperative fasting on surgical outcomes.