Preoperative Arrhythmias Such as Atrial Fibrillation: Cardiovascular Surgery Risk Factor

Table 3

Logistic regression analysis of preoperative AFib arrhythmias and postoperative evolution.

Variables in the equation
		𝐵	S.E.	Wald	df	Sig.	Exp(𝐵)	95% C.I. for EXP(𝐵)
								Lower	Upper
Mortality	No	−2.061	0.907	5.160	1	0.023	0.127	0.022	0.754
	Yes	−2.459	0.807	9.277	1	0.002	0.086	0.018	0416
Increased inotropic support needs	No	−2.652	1.079	6.036	1	0.014	0.071	0.009	0.585
	Yes	−0.321	0.185	3.008	1	0.043	0.726	0.505	1.043
Reintervention	No	0.474	0.569	0.695	1	0.405	1.607	0.527	4.901
	Yes	0.117	0.338	0.119	1	0.730	1.124	0.579	2.181
Mechanical ventilation > 24 h	No	2.408	1.045	5.309	1	0.021	11.116	1.433	86.226
	Yes	0.096	0.417	0.054	1	0.817	1.101	0.487	2.492
MSOF	No	2.765	1.174	0.031	1	0.191	6.954	1.532	49.135
	Yes	1.319	1.000	1.739	1	0.187	3.740	0.526	26.576
Neurological complications; CVA_ > 72 h	No	2.908	1.147	0.043	1	0.732	1.203	1,421	16.130
	Yes	−0.153	1.169	0.017	1	0.896	0.858	0.087	8.479
Neurological complications: transient ischemic attacks	No	2.603	1.154	5.140	1	0.789	0.869	0.020	0.695
	Yes	0.362	0.155	1.356	1	0.899	0.696	0.008	0.565
Neurological complications: coma ≥ 72 h	No	−0.433	2.645	0.849	1	0.627	6.047	0.723	36.569
	Yes	1.173	1.214	0.933	1	0.334	3.231	0.299	13.495
Acute renal failure	No	−2.961	1.641	3.610	1	0.307	0.063	0.431	3.124
	Yes	−0.083	2.594	0.025	1	0.870	0.047	0.510	1.127
ICULOS (days)	Yes	0.046	0.023	3.942	1	0.047	1.47	1.001	1.096
Sepsis	No	−0.235	0.634	0.137	1	0.711	0.791	0.228	2.740
	Yes	−0.846	0.566	2.237	1	0.135	0.429	0.142	1.300

(i) Predicted probability (YES: preoperative arrhythmias such as AFib influence the patient’s postoperative evolution; NO: preoperative arrhythmias do not influence the patient’s postoperative evolution).
(ii) Predicted group (YES: with preoperative arrhythmias such as AFib—group 𝑛₁; NO: without preoperative arrhythmias: sinus rhythm patients—group 𝑛₂).