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Mild cognitive impairment with associated inflammatory and cortisol alterations as independent risk factor for

Jakub Kazmierski1, Andrzej Banys, Joanna Latek

  • 1Department of Old Age Psychiatry and Psychotic Disorders, Medical University of Lodz, Lodz, Poland.

Dementia and Geriatric Cognitive Disorders
|March 8, 2014
PubMed
Abstract

Insights

Patients with mild cognitive impairment (MCI) face a significantly higher risk of developing postoperative delirium after cardiac surgery. This increased risk may be linked to elevated cortisol and inflammatory markers in individuals with MCI.

Area of Science:

  • Gerontology
  • Neuroscience
  • Anesthesiology

Background:

  • Mild cognitive impairment (MCI) is increasingly recognized as a significant risk factor for adverse outcomes in surgical patients.
  • Postoperative delirium is a common complication following major surgery, particularly cardiac procedures.

Purpose of the Study:

  • To investigate the association between mild cognitive impairment (MCI) and the incidence of postoperative delirium.
  • To explore the relationship between MCI and perioperative levels of cortisol, cytokines, cobalamin, and homocysteine.

Main Methods:

  • 113 adult patients undergoing cardiac surgery with cardiopulmonary bypass were assessed preoperatively for MCI using standard cognitive tests.
  • Patients were monitored for delirium development within five days following surgery.

Main Results:

  • Mild cognitive impairment (MCI) was diagnosed in 24.8% of patients, with a 36% overall delirium rate.
  • Patients with MCI exhibited a significantly higher risk of developing postoperative delirium (OR = 6.33, p = 0.002).
  • Elevated preoperative and postoperative cortisol and IL-2 plasma levels were observed in the MCI group compared to non-MCI subjects.

Conclusions:

  • Mild cognitive impairment (MCI) is a strong predictor of increased risk for postoperative delirium.
  • Perioperative hormonal (cortisol) and inflammatory (cytokine) changes in MCI patients may underlie this heightened vulnerability.

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