Perioperative medicine & outcomes

Associations between the intraoperative fraction of inspired intraoperative oxygen administration and days alive and out of hospital after surgery

BJA OpenPublished Retrospective cohort study

Authors' conclusion

We found potential benefits, and risks, associated with liberal intraoperative oxygen administration

Study context

Population
Adults undergoing elective surgery lasting more than 2 h at a large metropolitan New Zealand hospital, 2012 to 2020
Participants
15,449 adults
Exposure
Low and medium vs high mean intraoperative fraction of inspired oxygen (FiO2)
Outcome
DAOH at 90 days (DAOH90)
Follow-up
90 days
Methodological detailssingle-centre
  • Single-centre

Main finding

As reported in the abstract

Each group vs highAdjusted mean difference, days (95% CI)P value
Medium
0.09(−0.06 to 0.25)
P = 0.25
Low
0.28(−0.05 to 0.62)
P = 0.2

Observational data: associations, not effects.

Secondary outcomes

OutcomeaOR (95% CI)
Surgical site infectionLow vs High1.53 (1.12–2.10)
ICU admission1.1 (1.03–1.18)

Safety

OutcomeaOR (95% CI)
Respiratory complications1.17 (1.08–1.26)

Original publication

Associations between the intraoperative fraction of inspired intraoperative oxygen administration and days alive and out of hospital after surgery. BJA Open. Published 22 January 2024. doi:10.1016/j.bjao.2023.100253

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