The impact of comprehensive blood conservation program on major complications after total aortic arch replacement

Abstract

Introduction

Patients undergoing total aortic arch replacement (TAAR) usually require blood products perioperatively. This cohort study aimed to investigate the impact of a comprehensive blood conservation program on the major complications in these patients.

Methods

Patients with traditional or comprehensive blood management intraoperatively from January 2017 to December 2018 were included. We compared the rates of major complications (cerebral vascular accident, acute kidney injury, or mortality) between the two groups after propensity score matching (PSM). The association between blood management and outcomes was assessed by logistic regression. Restricted cubic splines (RCS) were built to evaluate the impact of fresh frozen plasma (FFP) on complications. Patients were stratified by the ratio of FFP/RBC (red blood cell) to investigate the effect of the ratio on complications.

Results

After 1:1 PSM, 200 patients were selected. 35% (35/100) of patients suffered major complications in the traditional group, while it decreased to 22% (22/100) in the comprehensive management group (OR = 0.524, p = 0.043). Multivariable logistic regression showed that FFP was a risk factor (OR = 1.186, p = 0.014). RCS results indicated that with the increase of FFP, the risk of complications gradually increases. The cut-off value was 402 mL. Patients in the group of ratio = 0 ∼ 0.5 had a higher chance than those without transfusion (OR = 7.487, p < 0.001).

Conclusions

Comprehensive blood conservation program in patients undergoing TAAR is safe and can reduce the incidence of major complications, which are associated with FFP volume and the ratio of FFP/RBC.

Keywords

total aortic arch replacement blood conservation fresh frozen plasma restricted cubic spline the ratio of fresh frozen plasma/red blood cell

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