Perioperative medicine & outcomes

Effects of intraoperative blood pressure variability on development of postoperative acute kidney injury among Japanese

Perioper Med (Lond)Published Retrospective observational study

Authors' conclusion

In a large-scale observational study of Japanese who underwent non-cardiac surgery, intraoperative BP variability, which was defined by ARV and minimum value of systolic BP, was associated with higher risks of postoperative AKI.

Study context

Population
Adults (≥ 20 years) undergoing non-cardiac surgery with GA at Fukuoka University Hospital, 2017–2019
Participants
8,504 cases
Exposure
Intraoperative systolic blood pressure (BP) variability
Outcome
Postoperative AKI (serum creatinine increase >0.3 mg/dL or 1.5 times from preoperation)
Follow-up
Within 48 h after surgery
Methodological detailssingle-centre
  • Single-centre

Main finding

As reported in the abstract

Postoperative AKI
Incidence of postoperative acute kidney injury (AKI)
184 (2.16%)
SD and coefficient of variation (CV): association non-significant after adjustment incl. intraoperative hypotension (P for trend)
P > 0.05
Average real variability (ARV): remained significantly associated with AKI after adjustment incl. intraoperative hypotension (P for trend)
P > 0.007
Lower minimum SBP associated with increased cumulative incidence of AKI after adjustment (P for trend)
P < 0.001

Observational data: associations, not effects.

Original publication

Effects of intraoperative blood pressure variability on development of postoperative acute kidney injury among Japanese. Perioper Med (Lond). Published 16 February 2026. doi:10.1186/s13741-026-00644-x

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