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Table 4 Main characteristics of studies used for discussion purposes

From: Minimising radiation exposure in catheter ablation of ventricular arrhythmias

Author, year

ZF/MinF/F

Number of patients

Type of study

Type of VA

Procedural duration

OSR

RR

CR

Epicardial ablation, % of procedures

Use of fluoroscopy

Fluoroscopy time and dose

Use of ICE, % of procedures

Our study, 2021

MinF

52

Retrospective, consecutive pts

PVC, Idiopathic VT and SHD related VT (NICM, ICM)

123.6 ± 42.2 min for PVC and idiopathic VT, 256.9 ± 71.7 min

for SHD related VT

89.7% for PVC and idiopathic VT, 77.4% for SHD related VT

29.6% for PVC and idiopathic VT, 32% for SHD related VT

5%

Yes, in 10% for SHD related VT

Yes, 14% for PVC and idiopathic VT, 10% for SHD related VT

8.3 ± 4 min and 25.4 ± 14 Gycm2 when used for PVC and idiopathic VT; 21.2 ± 5 min and 48.6 ± 32 Gycm2 when used in SHD related VT

Yes, 100%

Dinov et al., 2014

F

227

Prospective

SHD related VT (NICM, ICM)

181 ± 63.6 min for NICM and 155 ± 49 min for ICM

66.7% for NICM and 77.4% ICM

59.5% for NICM and 43% for ICM

11.1% for NICM and ICM

Yes, 9%

Yes, 100% of procedures

39 ± 22.4 min for NICM and 26 ± 19.1 min for ICM, dose not reported

No

Tanawuttivat et al.,

2015

F

815 in 8 different studies

Review with analysis

Idiopathic/outflow tract VT

Not reported in the review

76–100%

0–23%

0–3%

No

Yes

Not reported in the review

No

Kumar et al., 2016

F

695

Retrospective, consecutive pts

Idiopathic VT and SHD related VT (NICM, ICM)

Not reported

79% for idiopathic VT, 60% for NICM and 56% for ICM

At 6 years FU:

23% for idiopathic VT, 62% for NICM and 46% for ICM

3.7% for idiopathic VT, 6.7% for NICM, 8.3% for ICM

Yes, 3% for idiopathic VT, 30% for NICM and 8% for ICM

Yes

31.3 ± 20 min for idiopathic VT, 43 ± 21.6 for NICM and 45.1 ± 30.2 for ICM, dose not reported

No

Lamberti et al., 2015

ZF

19

Retrospective, consecutive pts

PVC, idiopathic VT

170.2 ± 45.7 min

100%

10.5%

0

No

No

0

Yes, 100%

Sanchez et al., 2016

ZF

16

Retrospective, consecutive pts

PVC, Idiopathic VT and SHD related VT (aetiology not specified)

150 ± 45 min

100%

Not reported

0

No

No

0

Yes, 75%

Razminia et al., 2017

ZF

44

Retrospective, consecutive pts

PVC, Idiopathic VT and SHD related VT (ICM)

201.9 min for PVC, 257.5 min for idiopathic VT and SHD related VT

93.3% for PVC, 100% for idiopathic VT and SHD related VT

6.6 for PVC, 21.4 for idiopathic VT and SHD related VT

3.3% for PVC, 0 for idiopathic VT and SHD related VT

No

No

0

Yes, % not specified

Giaccardi et al., 2019

ZF

7

Retrospective

PVC, VT (aetiology not specified)

75 min for PVC, 128 ± 21 min for VT

100%

0

0

No

No

0

No

Sadek et al., 2019

ZF

10

Prospective

PVC, SHD related VT (aetiology not specified)

Not reported

100%

0 for PVC, 17% for SHD related VT

0

No

No

0

Yes, 100%

Cano et al., 2016

MinF

41

Prospective

SHD related VT (NICM, ICM)

204 ± 61 min

66%

7.3%

4.9%

Yes, 16%

Yes

6.08 (1.51–12.36) min and 10.8 (2.9–41.1) Gycm2

No

Wang et al., 2017

MinF

160

Prospective, multi-centre

PVC, idiopathic VT

77.1 ± 33.8 min

84.1%

1.9%

1.2%

No

Yes, 5.6% of procedures

1.5 ± 0.3 min when used, dose not reported

No

  1. ZF zero fluoroscopy, MinF minimal fluoroscopy, F fluoroscopy, VA ventricular arrhythmia, OSR overall procedural success rate, RR recurrence rate, CR complication rate, ICE intracardiac echocardiography, PVC premature ventricular contractions, VT ventricular tachycardia, SHD structural heart disease, NICM non-ischaemic cardiomyopathy, ICM ischaemic cardiomyopathy, FU follow-up, min minutes, Gycm2 Gray centimeter squared