Perioperative medicine & outcomes

Covert Perioperative Strokes in Older Patients Having Noncardiac Surgery (PRECISION): A Prospective Cohort Analysis

AnesthesiologyPublished Prospective cohort study

Authors' conclusion

Among patients aged 60 yr and older who had major noncardiac surgery, mainly intracranial, one in nine patients experienced a perioperative covert stroke. Covert strokes more than doubled the risk of postoperative delirium and long-term neurocognitive decline.

Study context

Population
Patients aged 60 yr or older having elective noncardiac inpatient surgery (two thirds neurosurgical craniotomies) at two Chinese academic centersincluded in the analyses
Participants
934 patients
Exposure
Covert stroke vs no covert stroke
Outcome
Cumulative incidence of postoperative stroke (scheduled MRI brain imaging)
Follow-up
Within 7 days
Methodological detailstwo-center
  • Two-center

Main finding

As reported in the abstract

Cumulative incidence of postoperative stroke · within 7 days after surgery

Covert strokes

111

11.9%; 95% CI, 9.8 to 14.0%

Observational data: associations, not effects.

Secondary outcomes

Association of covert stroke with delirium

aOR (95% CI)P value
Covert stroke2.18 (1.31–3.62)P = 0.003

Association of covert stroke with 1-yr neurocognitive decline

aOR (95% CI)P value
Covert stroke2.33 (1.31–4.13)P = 0.004

Postoperative delirium · within 5 days

Incidence: 117 patients
12.5% (95% CI, 10.4 to 14.7%)

Neurocognitive decline · 1 yr

Incidence: 147 patients
18.8% (95% CI, 16.0 to 21.5%)

Original publication

Covert Perioperative Strokes in Older Patients Having Noncardiac Surgery (PRECISION): A Prospective Cohort Analysis. Anesthesiology. Published 19 December 2024. doi:10.1097/aln.0000000000005327

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