. Author manuscript; available in PMC: 2015 Feb 16.

Published in final edited form as: Circ Arrhythm Electrophysiol. 2014 Feb 14;7(2):244–250. doi: 10.1161/CIRCEP.113.000548

Table 4.

Predictors of Long-Term Mortality (Mean Follow-Up 12 Months) After Ventricular Tachycardia Ablation Using a Percutaneous Left Ventricular Assist Device

	Univariate Analysis			Multivariate Analysis

	Alive at Last Follow-Up (N=46)	Dead by Last Follow-Up (N=20)	P Value	Odds Ratio	95% CI	P Value
Age, y, mean±SD	65±12	71±10	0.052
Prior VT ablation, %	11 (24)	11 (55)	0.014
CRT-D device, %	13 (28)^*	13 (65)^*	0.005^*	12.9^*	1.3–126.4^*	0.028^*
Atrial fibrillation, %	15 (33)	12 (60)	0.038
Amiodarone, %	25 (54)	18 (90)	0.005
LVEF, mean±SD	32±13	17±7	<0.001
LVEF≤15%	6 (13)	11 (55)	<0.001		0.2–54.2	0.442
In ICU before the ablation, %	16 (35)^*	16 (80)^*	0.001^*	21.3^*	1.5–298.6^*	0.023^*
No. of days in the hospital, mean±SD	6.1±4.8	11.9±8.5	0.001
No. of rescue shocks, mean±SD	1.96±1.5	3.05±3.0	0.050

CI indicates confidence interval; CRT-D, cardiac resynchronization therapy-defibrillator; ICU, intensive care unit; LVEF, left ventricular ejection fraction; and VT, ventricular tachycardia.

Statistically significant.