Table 1.

Comparison of demographic variables and preoperative comorbidities between non-PPM group and PPM group

	Non-PPM	PPM	p value
N	393	10
Demographic data
Age	66 ± 10 years	66 ± 16 years	> 0.9
Female	110 (28%)	6 (60%)	0.04*
Rheumatic heart disease	4 (1%)	2 (20%)	0.008*
Coronary artery disease	211 (54%)	5 (50%)	> 0.9
Hypertension	223 (57%)	5 (50%)	0.75
Diabetes	116 (30%)	2 (20%)	0.7
Hypercholesterolaemia	112 (28%)	0 (0%)	0.07
PVD	20 (5%)	1 (10%)	0.4
CKD	36 (9%)	3 (30%)	0.06
COPD	27 (7%)	1 (10%)	0.5
Pulmonary hypertension	6 (2%)	2 (20%)	0.01*
Preoperative heart rhythm
Sinus rhythm	334 (85%)	8 (80%)	0.7
AF	56 (14%)	2 (20%)	0.6
Bundle branch blocks	1 (0.3%)	0	> 0.9
1st degree AV block	1 (0.3%)	0	> 0.9
VF/VT	1 (0.3%)	0	> 0.9
Left ventricular ejection fraction (LVEF)
Good > 50%	319 (81%)	8 (80%)	> 0.9
Moderate 31–50%	61 (16%)	2 (20%)	0.65
Poor 21–30%	10 (3%)	0 (0%)	> 0.9
Very poor < 21%	3 (1%)	0 (0%)	> 0.9
NYHA class
I	62 (16%)	0 (0%)
II	226 (58%)	5 (50%)	0.2
III	93 (24%)	5 (50%)
IV	12 (3%)	0 (0%)

PVD peripheral vascular disease, CKD chronic kidney disease, COPD chronic obstructive pulmonary disease, AF atrial fibrillation, VF/VT ventricular fibrillation/ventricular tachycardia, NYHA New York Heart Association