Management of ventricular tachycardia storm in patients with structural heart disease

Table 3 Principal studies analyzing the role of catheter ablation in controlling electrical storm

Ref.	No. of patients	Left ventricular ejection fraction	Epicardial procedures	Acute success	VT recurrence	ES recurrence	Death	Follow-up duration, mo
Sra et al[64]	19	27 ± 8	0%	87%	37%	-	0%	7 ± 2
Silva et al[65]	14	31 ± 13	20%	80%	13%	-	27%	12 ± 17
Carbucicchio et al[56]	95	36 ± 11	11%	89%	34%	8%	16%	Median 22
Arya et al[66]	13	33 ± 9	31%	100%	38%	-	31%	Median 23
Pluta et al[67]	21	-	0%	81%	19%	0%	0%	3
Deneke et al[68]	31	28 ± 15	9%	94%	25%	12%	9%	Median 15
Kozeluhova et al[69]	50	29 ± 11	0%	85%	52%	26%	29%	18 ± 16
Koźluk et al[70]	24	27 ± 7	7%	-	34%	12%	13%	28 ± 16
Di Biase et al[57]	92	27 ± 5	47%	100%	34%	0%	2%	25 ± 10
Izquierdo et al[71]	23	34 ± 10	0%	56%	-	35%	30%	Median 18
Jin et al[72]	40	21 ± 7	0%	80%	53%	-	25%	17 ± 17
Kumar et al[73]	287	27 ± 10 in ICM and 33 ± 16 in NICM	3.8% in ICM and 24% in NICM	60% in ICM and 50% in NICM	49% in ICM and 64% in NICM	17% in ICM and 27% in NICM	25% in ICM and 28% in NICM	Median 42
Muser et al[59]	267	29 ± 13	22%	73%	33%	5%	29%	Median 45

VT: Ventricular tachycardia; ES: Electrical storm.