Table 1.

Baseline clinical characteristics.

Characteristics	Overall (n = 113)
Data are presented as means ± SD or n (%). NYHA: New York Heart Association.
Age, yrs	77.2 ± 5.5
Male	72 (63.7%)
Body surface area, m2	1.73 ± 0.19
Preoperative
NYHA III-IV	88 (77.9%)
Left ventricular ejection fraction, %	53.8 ± 12.7
Diabetes mellitus	38 (33.6%)
Dyslipidaemia	75 (66.4%)
Hypertension	77 (68.1%)
Society of thoracic surgeons score, %	11.27 ± 9.4
Cardiac history
Coronary artery disease	53 (46.9%)
Previous myocardial infarction	14 (12.4%)
Prior coronary artery bypass surgery	5 (4.4%)
Prior percutaneous coronary intervention	23 (20.4%)
Prior atrial fibrillation/atrial flutter	11 (9.7%)
Prior III atrioventricular block	3 (2.7%)
Prior sick sinus syndrome	1 (0.9%)
Pre-existing pacemaker	7 (6.2%)
Prior transient ischaemic attack	38 (33.6%)