Hypertonic saline-hydroxyethyl starch solution attenuates fluid accumulation in cardiac surgery patients: a randomized controlled double-blind trial

Background: Significant fluid retention is common after cardiac surgery with the use of cardiopulmonary bypass (CPB). The aim of the study was to evaluate the effects of hypertonic saline-hydroxyethyl starch (HS-HES) solution on fluid accumulation in patients undergoing coronary artery bypass grafting surgery (CABG). Methods: Fifty adult male patients undergoing coronary bypass surgery were enrolled in this interventional, randomized, double-blinded study to compare HS-HES with saline solution. The study fluid (250 mL) was given into the venous reservoir of the CPB circuit at the time of aortic declamping. Results: Body mass change from the baseline to the first postoperative morning was significantly less in the HS-HES group compared with the control group (3.3 ± 1.5 kg vs. 4.4 ± 1.5 kg, P = 0.022). In the extracellular water (ECW) or ECW-balance, there were no significant differences between the groups. The need for fluids and diuretic medication did not differ between the groups during the perioperative period. Conclusions: Our study shows that 250 mL of HS-HES solution can reduce perioperative fluid accumulation to some degree in patients undergoing CABG surgery with CPB.

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