Table 2.

Patient demographics, preoperative risk factors and operative features for patients undergoing mitral valve operations by operative group.

Variable	Elective			Urgent/Emergent
	MVR (n=419)	MV Repair (n=674)	P-value	MVR (n=261)	MV Repair (n=123)	P value
PREOPERATIVE
Patient Age	60.3±0.7	56.8±0.5	<0.001	61.4±0.8	58.2±1.2	0.03
Sex (Female)	243 (58.0%)	265 (39.3%)	<0.001	144 (55.2%)	50 (40.7%)	0.01
Hypertension	256 (61.1%)	330 (49.0%)	<0.001	158 (60.5%)	69 (56.1%)	0.44
Peripheral Arterial Disease	25 (6.0%)	23 (3.4%)	0.05	26 (10.0%)	7 (5.7%)	0.18
Stroke	40 (9.5%)	23 (3.4%)	<0.001	32 (12.3%)	12 (9.8%)	0.61
Diabetes Mellitus	70 (16.7%)	62 (9.2%)	<0.001	61 (23.4%)	17 (13.8%)	0.03
Heart Failure	180 (43.0%)	168 (24.9%)	<0.001	199 (76.2%)	83 (67.5%)	0.08
Atrial fibrillation	93 (22.2%)	54 (8.0%)	<0.001	73 (28.0%)	20 (16.3%)	0.02
NYHA Class
Class I	73 (17.4%)	164 (24.3%)	0.01	17 (6.5%)	19 (15.4%)	0.01
Class II	154 (36.8%)	315 (46.7%)	0.001	40 (15.3%)	25 (20.3%)	0.24
Class III	156 (37.2%)	174 (25.8%)	<0.001	84 (32.2%)	43 (35.0%)	0.64
Class IV	36 (8.6%)	21 (3.1%)	<0.001	120 (46.0%)	36 (29.3%)	0.002
Infective Endocarditis	41 (9.8%)	45 (6.7%)	0.07	82 (31.4%)	20 (16.3%)	0.002
Renal Failure	23 (5.5%)	16 (2.4%)	0.01	36 (13.8%)	12 (9.8%)	0.32
Renal Failure (Hemodialysis)	18 (4.3%)	11 (1.6%)	0.01	28 (10.7%)	9 (7.3%)	0.19
Ejection Fraction (%)	54.4±0.6	55.7±0.4	0.06	52.1±0.8	50.7±1.3	0.34
Mitral Valve Stenosis	100 (23.9%)	13 (1.9%)	<0.001	39 (14.9%)	4 (3.3%)	0.003
Mitral Regurgitation (Moderate)	13.4%	12.3%	0.64	26 (10.0%)	15 (12.2%)	0.60
Mitral Regurgitation (Severe)	70.2%	82.6%	<0.001	194 (74.3%)	99 (80.5%)	0.20
OPERATIVE
Aortic Cross Clamp Time (min)	93.5±1.9	86.4±1.4	0.002	97.2±2.4	84.0±3.6	0.002
Cardiopulmonary Bypass Time (min)	133.9±2.5	123.8±1.7	0.001	144.4±3.7	120.5±4.4	<0.001