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Table 2 The results of MAT mapping and ablation in two groups

From: Macro-reentrant atrial tachycardia after tricuspid or mitral valve surgery: is there difference in electrophysiological characteristics and effectiveness of catheter ablation?

 

TV group (n = 18)

MV group (n = 30)

P value

MAT-CL at presentation (ms)

249 ± 28

250 ± 30

0.94

Number of MAT per patient

1.1 ± 0.3

1.3 ± 0.5

0.08

Proportion of Pts with ≥ 2 MATs, n (%)

2 (11.1)

9 (30.0)

0.13

Proportion of Pts with left atrial MAT, n (%)

1 (5.6)

12 (40.0)

0.01

Total number of MAT in each group

19

39

 

Right atrial MAT, n (%)

18 (94.7)

25 (64.1)

 

CTI-dependent AFL, n (%)

16 (84.2)

15 (38.5)

0.02

Counterclockwise

11

8

 

Clockwise

5

7

 

Non-CTI dependent MAT in RA

   

RA lateral suture line-related MAT

1

8

 

RA septum scar-related MAT

1

2

 

Left atrial MAT, n (%)

1 (5.3)

14 (35.9)

0.01

Anterior LA scar related MAT

0

2

 

Peri-mitral MAT

0

8

 

LA roof dependent

1

3

 

RPV related MAT

0

1

 

Procedural duration (min)

85.5 ± 35.9

103.8 ± 44.6

0.14

Fluoroscopic time (min)

4.4 ± 1.3

6.3 ± 3.4

0.04

Acute success rate, n (%)

18 (100)

28 (93.3)

0.52

  1. MAT macro-reentrant atrial tachycardia, CL clycle length