Perioperative medicine & outcomes

Effects of inhalation versus total intravenous anaesthesia on long-term mortality in older patients after noncardiac surgery: a retrospective observational study

Br J AnaesthPublished Retrospective observational cohort study

Main finding · All-cause mortality within 1 yrResult — go to the resultHazard ratio 0.95 95% CI 0.84–1.08

Authors' conclusion

The choice of anaesthetic agent during the intraoperative period was not associated with 1-yr mortality in older patients undergoing noncardiac surgery.

Study context

Population
Patients aged ≥60 yr undergoing noncardiac surgery under GA (≥2 h), January 2011 to June 2019
Participants
45,879 patients
Exposure
Total intravenous anaesthesia (TIVA) vs inhalation anaesthesia for maintenance
  • TIVAn = 7,273
  • Inhalation anaesthesian = 38,606reference
Outcome
All-cause mortality
Follow-up
Within 1 yr after surgery
Methodological detailsstabilised inverse probability of treatment weighting
  • Stabilised inverse probability of treatment weighting

Main finding

All-cause mortality within 1 yr · 1 yr

Hazard ratio

0.95

95% CI 0.84–1.08

TIVA vs inhalation anaesthesia for maintenance
HR 0.95 (95% CI 0.84–1.08)

As reported in the abstract

Observational data: associations, not effects.

Secondary outcomes

3-yr and 5-yr mortality

Results similar to 1-yr mortality

1-yr mortality (subgroups: female patients, emergency surgery)

Choice of anaesthetic agent showed differential effects on 1-yr mortality for female patients and emergency surgery

Safety

OutcomeOR (95% CI)
PPCs1.30 (1.22–1.37)
Perioperative adverse cardiovascular events1.34 (1.22–1.48)
AKI2.19 (1.88–2.57)

Original publication

Effects of inhalation versus total intravenous anaesthesia on long-term mortality in older patients after noncardiac surgery: a retrospective observational study. Br J Anaesth. Published 5 August 2024. doi:10.1016/j.bja.2024.07.008

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