Table 2 Clinical events after surgery.

	Preoperative QRS (ms)
	Missing preoperative QRS (n = 16)	<120 (n = 18)	120–150 (n = 19)	150–180 (n = 30)	⩾180 (n = 16)
Composite end point ventricular arrhythmia (%)	0	6	5	7	25
Sudden cardiac death (%)	0	0	0	3	0
(Non) sustained VT/appropriate ICD discharge (%)	0	6	5	3	25†
Mean (SD) duration to QRS⩾180 ms (years)	NA	68 (4.5)	42 (4.4)	23 (4.3)*	2 (2)*†
Patients reaching >180 ms after surgery (%)	6	0	0	13	56†
ICD implantation after surgery (%)	0	0	0	3	19
Homograft explantation after surgery (%)	19	11	5	7	6

ICD, implantable cardioverter‐defibrillator; VT, ventricular tachycardia.

*Calculated from mixed linear regression analysis (fig 2).

†Significant difference between patients with pre‐operative QRS 150–180 (p<0.05).