Table 2 Relationship of demographic and clinical variables (before, during, and after surgery) with prolonged mechanical ventilation after surgery

Gender (Male vs. Female)

1.35 (0.62,2.94)

0.392

-

-

BMI

1.01 (0.93,1.11)

0.538

-

-

Age

1.02 (0.98,1.05)

0.245

1.02 (0.97,1.23)

0.432

EF

0.99 (0.96,1.03)

0.976

-

-

Underlying diseases

Diabetes mellitus Yes vs. No

1.07 (0.52,2.23)

0.529

-

-

Hypertension Yes vs. No

1.11 (0.53,2.29)

0.581

-

-

CKD Yes vs. No

0.33 (0.09,1.17)

0.061

-

-

Urgency Yes vs. No

7.68 (2.74,9.88)

< 0.001

0.60 (0.29,0.81)

0.530

CABG Yes vs. No

1.02(0.36,2.79)

0.778

-

-

Copd Yes vs. No

2.02(0.62,6.57)

0.234

EURO Score 2

1.47(1.15,1.89)

< 0.001

1.38(1.12,1.65)

0.038

During surgery

Duration of surgery

1.01 (0.99,1.08)

0.280

-

-

Using pump Yes vs. No

0.49 (0.24,1.03)

0.096

0.84 (0.32,0.91)

0.861

Pump-time Yes vs. No

1.01 (1.01,1.06)

0.036

1.01 (0.95,1.14)

0.311

IABP Yes vs. No

3.82(1.49,9.80)

0.018

2.74(1.36,5.47)

0.031

After surgery

-

-

ICU admission (day)

1.66 (1.14,1.74)

0.002

1.53 (1.33,1.75)

0.003

Pneumonia Yes vs. No

6.75 (4.93,11.02)

< 0.001

7.24 (5.12,8.14)

0.001

Respiratory Failure Yes vs. No

8.34 (5.12,9.11)

< 0.001

7.56 (4.48,8.77)

0.042

Atelectasis Yes vs. No

2.97 (0.95,9.24)

0.032

1.54 (1.13,1.68)

0.660

CVA

8.11(4.39,11.13)

< 0.001

3.75(1.26,4.84)

0.044

FFP Yes vs. No

3.95 (1.87,8.34)

< 0.001

0.58 (0.48,0.71)

0.425

PLT Yes vs. No

2.30 (1.03,5.11)

0.006

1.96 (1.55,2.12)

0.301

P.C Yes vs. No

1.82 (0.89,3.71)

0.072

0.80 (0.68,0.97)

0.662

PE Yes vs. No

3.97 (1.65,9.54)

0.001

1.53 (1.16,1.77)

0.626

AKI Yes vs. No

3.56 (1.65,7.66)

< 0.001

1.08 (0.98,1.44)

0.918

Drainage Yes vs. No

2.82 (1.25,6.36)

0.003

2.23 (1.98,2.46)

0.032

Epinephrine (receiving days)

3.28 (1.89,2.56)

0.004

2.73 (2.24,3.11)

0.022

Norepinephrine (receiving days)

1.69 (1.31,2.21)

0.002

1.04 (0.89,1.19)

0.803

Dobutamine (receiving days)

1.32 (1.08,1.62)

0.053

1.15 (1.02,1.34)

0.295

Milrinone (receiving days)

1.17 (0.79,1.74)

0.418

0.80 (0.77,0.94)

0.381

Dopamine (receiving days)

1.23 (1.04,1.45)

0.024

0.86 (0.56,1.02)

0.298

Hb

0.81 (0.68,0.96)

0.049

0.84 (0.35,1.12)

0.128

Cardiac dysfunction Yes vs. No

4.22(1.44,8.32)

0.005

2.58(1.33,2.87)

0.042