Association of the First 24-Hours Volume Status with New-Onset Atrial Fibrillation After Off-Pump Coronary Artery Bypass Graft Surgery
YIN Hongxia
XIE Mingjie
Abstract：Objective To analyze the correlation between the first 24 h volume status and postoperative atrial fibrillation(AF)after off-pump coronary artery bypass grafting(OPCABG),and to investigate the monitoring and management of volume balance in the first 24 h postoperative period.Methods Patients who received OPCABG from January to December 2021 were enrolled in the study,and the relationship between the first 24 h volume status and the incidence of new-onset AF after OPCABG was analyzed by the Lowess curve,and grouped according to this.One-way logistic regression was used to analyze the correlation between the first 24 h volume status and new AF after surgery.Subjects'working characteristic curves and area under the curve were assessed for the predictive value of the first 24 h volume status for postoperative new-onset AF.Multifactorial logistic regression was performed for risk factor analysis.Results The relationship between the first 24 h volume status and the incidence of new AF after OPCABG was non-linear,and the relationship was approximately"U"shaped.The incidence of postoperative new AF was 22.95％when the first 24 h volume status was maintained between-550-500 mL,which was lower than that of the＜-500 mL and＞500 mL groups(P＜0.001).It was negatively associated with new postoperative AF when the first 24 h volume status was＜-500 mL(OR=0.997,95％CI:0.993-1.001,P=0.095)and positively associated with new postoperative AF when the first 24 h volume status was＞500 mL(OR=1.002,95％CI:1.000-1.004,P=0.091).When the first 24 h volume status was maintained between-550-500 mL,multifactorial logistic regression analysis showed that preoperative red blood cell count(OR=0.568,95％CI:0.358-0.900,P=0.016)and ejection fraction(OR=0.953,95％CI:0.914-0.994,P=0.026)were associated with new postoperative AF.Conclusion There is a nonlinear relationship between volume status in the first 24 h postoperatively and new postoperative AF.Maintaining the first 24 h postoperative volume status within the optimal interval reduces the risk of postoperative AF,provided that the patient's condition is evaluated comprehensively.
Keywords：off-pumpcoronary artery bypass graftvolume statusatrial fibrillation
Publication Date：2026-04-13
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 1166-1170 )