Table 4: Predictors of Appropriate ICD Therapy in Primary Preventative ICD Therapy in Tetralogy Of Fallot (Univariate Analysis).

	HR	95 % CI	p-value 1
Prior palliative shunt	2.6	0.7–9.4	0.13
Inducible sustained VT	2.1	0.6–7.6	0.24
QRS duration, per 1 ms	1.01	0.99–1.03	0.21
QRS ≥180 ms	2.0	0.7–5.9	0.22
Ventriculotomy incision	2.4	0.9–6.1	0.071
Nonsustained VT	2.7	1.0–7.2	0.053
RV systolic pressure, per 1 mmHg	1.06	1.01–1.11	0.0301
Mean PAP, per 1 mmHg	1.16	1.05–1.35	0.0032
LVEDP, per 1 mmHg	1.21	1.08–1.35	0.0008
LVEDP ≥12 mmHg	15.1	1.9–123.7	0.0114

HR = hazard ratio; VT = ventricular tachycardia; PAP = pulmonary artery pressure; LVEDP = left ventricular end diastolic pressure. Adapted from Khairy, et al., 2008.⁴⁸