Preoperative Arrhythmias Such as Atrial Fibrillation: Cardiovascular Surgery Risk Factor
Table 4
Subgroup analysis depending on the type of heart surgery performed and on the extent of adverse effect of preoperative (AFib) arrhythmias on each unwanted postoperative event.
Variable
Patients lots
CABG lot
CABG + valvular procedures lot
(922 patients)
(198 patients)
OR
95% C.I. for OR
OR
95% C.I. for OR
Lower
Upper
Lower
Upper
In-hospital mortality
No
0.264
0.033
2.102
0.208
0
0
·
0.999
Yes
0.357
0.057
2.248
0.273
0
0
·
0.999
Increased inotropic support
No
0.072
0.008
0.638
0.018
11.158
1.115
111.649
0.04
Yes
0.638
0.419
0.972
0.036
1.242
0.564
2.735
0.049
Reintervention
No
1.649
0.445
6.115
0.455
0.433
0.052
3.612
0.439
Yes
1.249
0.568
2.746
0.58
1.2
0.259
4.025
0.977
Mechanical ventilation_ > 24 h
No
1.844
0.269
12.637
0.533
0
—
0.999
Yes
0.667
0.258
1.73
0.405
1.458
0.295
7.216
0.644
MSOF
No
0
—
1
0
0
—
0.999
Yes
3.65
0.306
43.499
0.306
0
—
0.999
CVA_ > 72 h
No
0
—
1
—
—
—
—
Yes
0.771
0.077
7.756
0.826
—
—
—
—
Transient CVA
No
1.032
0
—
1
—
—
—
—
Yes
0
—
0.999
0
·
1
Coma_ > 72 h
No
0
—
1
—
—
—
—
Yes
0
—
0.999
0
0
·
0.999
Acute renal failure
No
0
0
—
1
0.191
0.014
2.612
0.215
Yes
0
0
—
1
0.161
0.01
2.634
0.2
ICULOS (days)
Yes
1.013
0.954
1.076
0.672
1.018
0.914
1.134
0.747
Sepsis
No
0.152
0.04
0.574
0.005
4.624
0.329
64.974
0.256
Yes
0.384
0.108
1.366
0.139
0.408
0.06
2.762
0.358
(i) Predicted probability (YES: preoperative arrhythmias such as AFib influence postoperative evolution; NO: preoperative arrhythmias do not influence postoperative evolution). (ii) Predicted group (YES: with preoperative arrhythmias such as AFib—group ; NO: without preoperative arrhythmias: sinus rhythm patients—group ).
