Cardiothoracic & vascular anesthesia

Synthetic colloids as priming fluids in cardiopulmonary bypass and postoperative acute kidney injury: a propensity score-matched study

Perioper Med (Lond)Published Retrospective cohort study

Main findingResult — go to the resultAdjusted odds ratio 1.785 95% CI 1.262–2.526

Authors' conclusion

The use of HES as a priming solution in on-pump cardiac surgery was associated with an increased risk of postoperative AKI compared to gelatin, although it did not affect transfusion requirements.

Study context

Population
Adults undergoing cardiac surgery with cardiopulmonary bypass (CPB), 2018–20221,880 matched pairs analysed
Participants
14,443 adults
Exposure
Hydroxyethyl starch (HES) vs succinylated gelatin as CPB priming solution
  • HESn = 1,880
  • Gelatinn = 1,880reference
Outcome
Incidence of postoperative AKI
Methodological detailssingle-centre, propensity-score matched (1:1)
  • Single-centre
  • Propensity-score matched (1:1)

Main finding

As reported in the abstract

Adjusted odds ratio

1.785

95% CI 1.262–2.526

P = 0.001

By group

HES vs Gelatin
aOR 1.785 (95% CI 1.262–2.526); P = 0.001

Observational data: associations, not effects.

Secondary outcomes

Transfusion requirements

No significant differences after matching

Postoperative acute kidney injury (AKI) in elderly and female patients (subgroup)

Effect of HES on AKI greater in elderly and female patients

Original publication

Synthetic colloids as priming fluids in cardiopulmonary bypass and postoperative acute kidney injury: a propensity score-matched study. Perioper Med (Lond). Published 22 February 2025. doi:10.1186/s13741-025-00503-1

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