Factors affecting duration of stay in the intensive care unit after coronary artery bypass surgery and its impact on in-hospital mortality: a retrospective study

Table 3 Adjusted effect of selected variables on perioperative length of stay (Backword—Conditional)

Variables		3 Nights or less stay in CICU		More than 3 nights stay in CICU		Total	OR	P-value
Variables		n	%	n	%	Total	OR	P-value
Overall		793	74.1	276	25.8	1070
LA diameter		3.81		3.91			2.531	0.003
Hypertension	NO	322	78.7	87	21.3	409	1.525	0.092
	YES	465	71.1	189	28.9	654
	Total	787	74.0	276	26.0	1063
PVD	NO	750	73.7	267	26.3	1017	0.232	0.049
	YES	41	82.0	9	18.0	50
	Total	791	74.1	276	25.9	1067
Atrial fibrillation	NO	788	74.2	274	25.8	1062	24.884	0.012
	YES	1	33.3	2	66.7	3
	Total	789	74.1	276	25.9	1065
B-Blockers	No	200	67.6	96	32.4	296	Ref	0.011
	Less than month	206	79.2	54	20.8	260	0.360
	More than month	379	75.2	125	24.8	504	0.903
	Total	785	74.1	275	25.9	1060
Diuretics	No	583	75.7	187	24.3	770	Ref	0.087
	Less than month	62	62.0	38	38.0	100	2.374
	More than month	139	73.9	49	26.1	188	0.808
	Total	784	74.1	274	25.9	1058
Prolonged support	Less than 12 hs	485	77.1	144	22.9	629	Ref	0.150
	12–24 hs	104	71.7	41	28.3	145	0.677
	24–36 hs	44	77.2	13	22.8	57	0.605
	36–48	89	80.2	22	19.8	111	0.616
	48–72	41	71.9	16	28.1	57	0.699
	more than 72 hs	2	5.4	35	94.6	37	0.008
	Total	765	73.8	271	26.2	1036
Ventilation duration	Vent. Duration < 12Hrs	624	80.7	149	19.3	773	3.931	0.000
	Vent. Duration > 12Hrs	147	55.9	116	44.1	263
	Total	771	74.4	265	25.6	1036
Pneumonia/sepsis	No	775	77.2	229	22.8	1004	20.363	0.000
	Yes	6	11.8	45	88.2	51
	Total	783	74.1	274	25.9	1057
Postoperative AF	No	736	90.2	80	9.8	816	30.683	0.000
	Yes	54	21.7	195	78.3	249
	Total	790	74.2	275	25.8	1065

ISSN: 1749-8090