Table 4.

Postoperative morbidity

	Lone MV	MV + CMIV	p-value
	N=109	N=104
Operative Mortality	5 (5%)	3 (3%)	0.72
Stroke	2 (2%)	1 (1%)	0.99
Pneumonia	19 (17%)	10 (10%)	0.11
Ventilation time (hours)	20 (IQR: 11–49)	17 (IQR: 6–42)	0.09
Required reintubation	9 (8%)	6 (6%)	0.60
Reoperation for bleeding	9 (8%)	4 (4%)	0.25
Postoperative blood products	85 (78%)	58 (56%)	<0.01
Deep sternal wound infection	1 (1%)	0	0.99
Renal failure	8 (7%)	8 (8%)	0.99
Heart block	2 (2%)	6 (6%)	0.16
Early atrial tachyarrhythmias	10 (9%)	62 (60%)	<0.01
Postoperative pacemaker placement	5/80 (6%)	11/96 (11%)	0.30
Length of stay in ICU (hours)	79 (IQR: 45–143)	73 (IQR: 44–129)	0.40

Abbreviations: CMIV, Cox-Maze IV; ICU, intensive care unit; MV, mitral valve.