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Related Experiment Videos

Postoperative cognitive dysfunction versus complaints: a discrepancy in long-term findings.

Jeanette B Dijkstra1, Jellemer Jolles

  • 1Department of Psychiatry and Neuropsychology, University Hospital Maastricht, The Netherlands. j.dijkstra@np.unimaas.nl

Neuropsychology Review
|July 2, 2002
PubMed
Summary

Postoperative cognitive complaints persist long after general anesthesia, despite cognitive tests showing recovery. Psychological factors, not just methodological issues, may explain this long-term discrepancy in patients.

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Area of Science:

  • Anesthesiology
  • Neuroscience
  • Psychology

Background:

  • Cognitive performance often declines shortly after general anesthesia but typically recovers within weeks.
  • A discrepancy exists between objective cognitive performance and subjective patient complaints long-term post-surgery.
  • Existing research on postoperative cognitive dysfunction faces significant methodological limitations.

Purpose of the Study:

  • To review and analyze the discrepancy between measured cognitive performance and patient-reported complaints long after general anesthesia.
  • To explore potential explanations for persistent cognitive complaints that are not detected by standard cognitive tests.

Main Methods:

  • Review of existing literature on postoperative cognitive performance and complaints.
  • Analysis of studies examining cognitive function at various time points after general anesthesia (short-term vs. long-term).

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  • Discussion of methodological challenges in assessing long-term cognitive outcomes.

    • Main Results:

    • Objective cognitive decline is common shortly after surgery but rarely detected long-term (weeks to years).
    • However, some patients continue to report persistent cognitive complaints long after general anesthesia.
    • Methodological issues in studies do not fully account for this long-term discrepancy.

    Conclusions:

    • Persistent cognitive complaints long after general anesthesia may not be reflected in objective cognitive test results.
    • Psychological factors, including mood, coping mechanisms, and personality, are potential explanations for these enduring complaints.
    • Future research should investigate these psychological factors to understand the persistence of long-term cognitive complaints after surgery.