Fluid management in patients undergoing cardiac surgery: effects of an acetate- versus lactate-buffered balanced infusion solution on hemodynamic stability (HEMACETAT)

Carmen A Pfortmueller, Livia Faeh, Martin Müller, Balthasar Eberle, Hansjörg Jenni, Björn Zante, Josef Prazak, Lars Englberger, Jukka Takala, Stephan M Jakob, Carmen A Pfortmueller, Livia Faeh, Martin Müller, Balthasar Eberle, Hansjörg Jenni, Björn Zante, Josef Prazak, Lars Englberger, Jukka Takala, Stephan M Jakob

Abstract

Background: Recent evidence suggests that acetate-buffered infusions result in better hemodynamic stabilization than 0.9% saline in patients undergoing major surgery. The choice of buffer in balanced crystalloid solutions may modify their hemodynamic effects. We therefore compared the inopressor requirements of Ringer's acetate and lactate for perioperative fluid management in patients undergoing cardiac surgery.

Methods: Using a randomized controlled double-blind design, we compared Ringer's acetate (RA) to Ringer's lactate (RL) with respect to the average rate of inopressor administered until postoperative hemodynamic stabilization was achieved. Secondary outcomes were the cumulative dose of inopressors, the duration of inopressor administration, the total fluid volume administered, and the changes in acid-base homeostasis. Patients undergoing elective valvular cardiac surgery were included. Patients with severe cardiac, renal, or liver disease were excluded from the study.

Results: Seventy-five patients were randomly allocated to the RA arm, 73 to the RL. The hemodynamic profiles were comparable between the groups. The groups did not differ with respect to the average rate of inopressors (RA 2.1 mcg/kg/h, IQR 0.5-8.1 vs. RL 1.7 mcg/kg/h, IQR 0.7-8.2, p = 0.989). Cumulative doses of inopressors and time on individual and combined inopressors did not differ between the groups. No differences were found in acid-base parameters and their evolution over time.

Conclusion: In this study, hemodynamic profiles of patients receiving Ringer's lactate and Ringer's acetate were comparable, and the evolution of acid-base parameters was similar. These study findings should be evaluated in larger, multi-center studies.

Trial registration: Clinicaltrials.gov NCT02895659 . Registered 16 September 2016.

Keywords: Cardiac surgical procedures; Crystalloid solutions; Fluid therapy; Hemodynamics; Perioperative period; Randomized controlled trial; Vasoconstrictor agents.

Conflict of interest statement

Ethics approval and consent to participate

The study was approved by the ethics committee of the Canton of Berne.

Consent for publication

All authors give their consent for publication.

Competing interests

The authors declare that they have no competing interests.

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Figures

Fig. 1
Fig. 1
CONSORT flowchart
Fig. 2
Fig. 2
Hemodynamic profile for the Ringer’s acetate and the Ringer’s lactate group
Fig. 3
Fig. 3
Acid-base homeostasis—profile of Ringer’s acetate and Ringer’s lactate

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