Table 2.

Univariate post-operative comparison in propensity-matched groups

	OPCAB (531)	On-pump beating heart (531)
Atrial fibrillation	70 (13.8%)	106 (19.96%)	0.002
Episodes of VT/VF needing defibrillation	4 (0.75%)	15 (2.82%)	0.01
Respiratory* complications	103 (19.4%)	152 (28.63%)	0.001
CPAP	6 (1.13%)	13 (2.45%)	0.163
Atelectasis	40 (7.53%)	56 (10.55%)	0.108
Effusion (including mild)	78 (14.69%)	112 (21.09%)	0.008
Pneumothorax	1 (0.19%)	3 (0.56%)	0.624
Trachesostomy	7 (1.32%)	20 (3.77%)	0.011
Re-intubation	23 (4.3%)	48 (9%)	.001
Post-op renal failure	16 (3.01%)	49 (9.23%)	<.001
GI complications	6 (1.13%)	20 (3.77%)	.005
Re-explorations	15 (2.8%)	41 (7.7%)	<0.001
IABP	38 (7.1%)	87 (16.3%)	<0.001
High inotropic support	17 (3.2%)	69 (12.9%)	<0.001
MI	5 (0.9%)	30 (5.6%)	<0.001
Adverse neurological outcomes	12 (2.26%)	28 (5.27%)	.010
Sternal dehiscence	7 (1.32%)	11 (2.07%)	0.34
Deep sternal wound infection	10 (1.88%)	12 (2.26%)	0.667
Leg wound infection	3 (0.56%)	8 (1.51%)	0.224
Transfusion of blood or blood products	242 (45.57%)	396 (74.58%)	<0.001

*Some patients had more than one respiratory complications. VT ventricular tachycardia, VF venticular fibrillation, GI gastro-intestinal, CPAP continuous positive airway pressure, MACCE major adverse cardiac and cerebral events, IABP intra-aortic balloon pump. High inotropic support—adrenaline requirement of greater than 0.5 mcg/kg/min or use of vasopressin in addition to adrenaline