Research Article

The Effect of Fluid Overload on Attributable Morbidity after Cardiac Surgery: A Retrospective Study

Table 4

Multivariate analyses.

Multivariate analysisOR (95% CI) value

Prolonged mechanical ventilation (>4.9 hours)
Quartiles of total fluid balance (Q)
Q21.449 (0.813–2.585)0.209
Q31.690 (0.956–2.987)0.071
Q44.938 (2.901–8.403)<0.001
Additive EuroSCORE1.090 (1.027–1.157)0.005
ACC (min)1.006 (1.002–1.010)0.003
Use of noradrenaline1.616 (1.016–2.571)0.043

Prolonged LOS in ICU (≥2 days)
Quartiles of total fluid balance (Q)
Q20.955 (0.460–1.982)0.901
Q33.284 (1.728–6.243)<0.001
Q411.31 (6.12–20.96)<0.001
Additive EuroSCORE1.172 (1.097–1.252)<0.001
ACC (min)1.009 (1.005–1.014)<0.001
Use of noradrenaline2.247 (1.403–3.599)0.001

LOS, length of stay; AKI, acute kidney injury; EuroSCORE, European System for Cardiac Operative Risk Evaluation; ACC, aortic cross clamp; ICU, intensive care unit. The first quartile (Q1) of total fluid balance served as the reference value.