Table 3 Significant independent predictive variables for 30-day mortality by multivariate logistic regression analysis

Pre-operative factors

Male sex

3.00 (1.75-5.15)

<0.001

Age ≥80 (referent group 18–49 years)

4.83 (1.30-17.92)

0.018

ESKD on dialysis

6.54 (2.52-16.94)

<0.001

EF 35-50% (referent group EF > 50%)

2.29 (1.08-4.86)

0.032

EF < 35% (referent group EF > 50%)

4.07 (1.70-9.74)

0.002

Intra-operative factors

CPB time

1.01 (1.01-1.02)

<0.001

Post-operative complications

Pulmonary complications

2.39 (1.30-4.41)

0.005

Cardiac arrest

20.20 (10.64-38.34)

<0.001

Acute kidney injury on CRRT

5.13 (2.57-10.21)

<0.001