Table 2.

Preoperative examination of 21 patients

Examination	Patients
	(n)	(%)
Electrocardiogram:
Right bundle branch block	12	57.1
ST segment change	10	47.6
T wave change	6	28.6
Tachycardia	4	19.0
Premature ventricular contraction	2	9.5
Atrial fibrillation	2	9.5
Bradycardia	0
Transthoracic echocardiography:
Left ventricular ejection fraction	65.6 ± 5.0
LVEDD (mm)	44.5 ± 8.2
RVEDD (mm)	24.7 ± 9.0
RVOTO	11	52.4
Tricuspid insufficiency	8	38.1
Aortic insufficiency	1	4.8
Mitral insufficiency	0
Imaging:
Computed tomography	12	57.1
Magnetic resonance imaging	12	57.1

LVEDD, left ventricular end diastolic dimension; RVEDD, right ventricular end diastolic dimension; RVOTO, right ventricular outflow tract obstruction