Perioperative medicine & outcomes
Association of preoperative anaesthesia consultation prior to elective noncardiac surgery with patient and health system outcomes: a population-based study
Main finding · DAH30Result — go to the resultAdjusted ratio of means 1.00 95% CI 1.00–1.00Authors' conclusion
Preoperative anaesthesia consultation was not associated with greater DAH30 across the overall study population. However, important potential benefits were observed among high-risk subgroups.
Study context
- Population
- Patients aged ≥40 yr undergoing intermediate-risk to high-risk elective, inpatient, noncardiac surgery in Ontario, Canada (2009–17)
- Participants
- 364,149 patients
- Exposure
- Preoperative anaesthesia consultation vs no consultation
- Consultationn = 274,365
- Outcome
- DAH30
- Follow-up
- 30 days
Methodological detailslinked health administrative data, propensity score overlap weights, prespecified effect modifier analyses
- Linked health administrative data
- Propensity score overlap weights
- Prespecified effect modifier analyses
Main finding
As reported in the abstract
Adjusted ratio of means
1.00
95% CI 1.00–1.00
By group
Consultation vs No consultation
adjusted ratio of means 1.00 (95% CI 1.00–1.00)
Observational data: associations, not effects.
Secondary outcomes
DAH30 in high-risk subgroups (ischaemic heart disease, ASA ≥4, frailty index ≥0.21, vascular surgery) (subgroup)
- Significant effect modification: significantly more DAH30 with consultation
- Prespecified effect modifier analyses
DAH90, LOS, 30-day and 1-yr mortality, 30-day costs
- Consultation associated with greater DAH90, decreased LOS, lower 30-day and 1-yr mortality, reduced 30-day costs
Original publication
Association of preoperative anaesthesia consultation prior to elective noncardiac surgery with patient and health system outcomes: a population-based study. Br J Anaesth. Published 2 September 2023. doi:10.
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