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Metabolic changes after cardiac surgery.

S M Jakob1, H Ensinger, J Takala

  • 1Department of Intensive Care Medicine, University Hospital Bern, Freiburgstrasse, CH-3010 Bern, Switzerland. stephan.jakob@insel.ch

Current Opinion in Clinical Nutrition and Metabolic Care
|February 27, 2001
PubMed
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Cardiac surgery causes complex metabolic changes, including hormonal and inflammatory responses. Better management of these metabolic issues may improve patient recovery and outcomes.

Area of Science:

  • Biochemistry
  • Physiology
  • Cardiovascular Surgery

Background:

  • Cardiac surgery involves extracorporeal circulation, surgical trauma, and hypothermia, triggering significant physiological stress.
  • These factors interact with patient-specific responses and interventions, leading to profound metabolic alterations.

Purpose of the Study:

  • To elucidate the multifaceted metabolic changes following cardiac surgery.
  • To highlight the key hormonal, inflammatory, and substrate alterations observed in patients.

Main Methods:

  • Review of metabolic and endocrine responses in the context of cardiac surgery.
  • Analysis of biochemical markers including hormones, inflammatory cytokines, and metabolites.

Main Results:

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  • Increased oxygen consumption, energy expenditure, and secretion of hormones like insulin, growth hormone, ACTH, cortisol, epinephrine, and norepinephrine.
  • Decreased total-T3, hyperglycemia, hyperlactatemia, elevated glutamate, aspartate, free fatty acids, hypokalemia, and increased inflammatory markers.
  • Evidence suggests improved patient outcomes with better control of these metabolic derangements.

Conclusions:

  • Cardiac surgery induces a complex metabolic syndrome characterized by hormonal and inflammatory dysregulation.
  • Addressing these metabolic abnormalities is crucial for optimizing patient recovery and clinical outcomes.