Perioperative medicine & outcomes

Interventions to prevent postoperative neurocognitive complications: an umbrella review of meta‐analyses of randomised controlled trials

AnaesthesiaPublished Umbrella review of meta-analyses of randomised controlled trials

Authors' conclusion

A number of peri-operative interventions are associated with a reduction in postoperative neurocognitive complications but the certainty of evidence supporting these interventions to prevent is very low.

Study context

Population
Adult surgical populations114 systematic reviews and meta-analyses
Participants
250,777 participants
Comparison
Pharmacological and non-pharmacological interventions for prevention of postoperative neurocognitive complications
Outcome
Incidence of peri-operative neurocognitive complications
Methodological detailsGRADE certainty assessment, AMSTAR quality appraisal, Ioannidis classification, Databases searched from inception to 23 August 2025
  • GRADE certainty assessment
  • AMSTAR quality appraisal
  • Ioannidis classification
  • Databases searched from inception to 23 August 2025

Pooled result

As reported in the abstract

Postoperative neurocognitive complications
  • Dexmedetomidine, cerebral monitoring, acupuncture, sleep interventions, steroids, antipsychotics, peripheral nerve blocks, esketamine and remimazolam associated with reductions
  • Overall certainty of evidence for all these interventions predominantly very low

Further pooled results

Postoperative neurocognitive complications by surgery type (subgroup)

Potential benefits across non-cardiac, orthopaedic and cardiac surgery

Original publication

Interventions to prevent postoperative neurocognitive complications: an umbrella review of meta‐analyses of randomised controlled trials. Anaesthesia. Published 17 November 2025. doi:10.1111/anae.70061

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