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Is crystalloid cardioplegia a strong predictor of intra-operative hemodilution?

Murat Günday, Hakan Bingöl1

  • 1Department of Cardiovascular Surgery, Ankara Çankaya Hospital, Aşağı Dikmen mah, 575 sok, Orankent konutları B blok No:12, OR-AN Çankaya, Ankara, Turkey. hbingol@gmail.com.

Journal of Cardiothoracic Surgery
|January 29, 2014
PubMed

Insights

Crystalloid cardioplegia significantly increases intraoperative hemodilution and blood transfusion needs compared to blood cardioplegia. This can lead to longer intensive care unit and hospital stays, impacting patient outcomes.

Area of Science:

  • Cardiovascular Surgery
  • Anesthesiology
  • Transfusion Medicine

Background:

  • Intraoperative hemodilution following cardiopulmonary bypass is linked to increased intensive care unit (ICU) stays, prolonged hospitalization, higher costs, and mortality.
  • Identifying key predictors of hemodilution is crucial for optimizing patient management and outcomes.

Purpose of the Study:

  • To determine if crystalloid cardioplegia is a significant predictor of intraoperative hemodilution.
  • To compare the effects of crystalloid versus blood cardioplegia on intraoperative hematocrit levels and transfusion requirements.

Main Methods:

  • A randomized prospective study involving 100 patients undergoing cardiopulmonary bypass.
  • Patients were allocated to receive either crystalloid cardioplegia (St. Thomas-II solution, n=50) or blood cardioplegia (Calafiore cold blood cardioplegia, n=50).

Main Results:

  • The crystalloid cardioplegia group exhibited significantly lower average intraoperative hematocrit (18.4% vs. 24.2%, p<0.001) and higher packed red blood cell (RBC) transfusion requirements (2.3 units vs. 0.7 units, p=0.001).
  • Multivariate analysis identified crystalloid cardioplegia (OR=0.19, p<0.001) as a strong predictor of intraoperative hemodilution, alongside age, female gender, longer cross-clamp time, and smaller body surface area.

Conclusions:

  • Crystalloid cardioplegia is associated with greater intraoperative hemodilution and increased blood transfusion needs compared to blood cardioplegia.
  • The observed hemodilution and transfusion requirements may contribute to extended ICU and hospital stays in the early postoperative period.
Abstract

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