Table 1

Baseline, Procedural and CMR-Derived Data

All Patients
(n = 44)
Post-Infarction
(n = 23)
NICM
(n = 21)
Age62 ± 1367 ± 956 ± 14
Male37 (84)20 (87)17 (81)
NYHA functional class
 I24 (55)12 (52)12 (57)
 II17 (39)10 (44)7 (33)
 III3 (7)1 (4)2 (10)
LV ejection fraction, %44 ± 1245 ± 1242 ± 11
LV end-diastolic volume, ml209 (181–253)203 (174–233)213 (189–257)
LV end-systolic volume, ml109 (87–155)102 (84–134)124 (89–160)
History of atrial flutter/fibrillation8 (18)5 (22)3 (14)
BMI, kg/m²27 ± 528 ± 527 ± 4
Diabetes mellitus7 (16)5 (22)2 (10)
eGFR <60 ml/min5 (11)3 (13)2 (10)
Number of VTs induced
 117 (39)12 (52)5 (24)
 213 (30)4 (17)9 (43)
 ≥314 (31)7 (31)7 (33)
Hemodynamic stability of VTs
 Only stable VT12 (27)7 (30)5 (24)
 Only unstable VT18 (41)8 (35)10 (48)
 Stable and unstable VT14 (32)8 (35)6 (29)
Mean cycle length of induced VTs, ms292 ± 65292 ± 63292 ± 68
Pericardial puncture15 (34)2 (9)13 (62)
Radiofrequency energy applications
 Only endocardial31 (71)21 (91)10 (48)
 Only epicardial4 (9)1 (4)3 (14)
 Endocardial and epicardial8 (18)1 (4)7 (33)
 None1 (2)0 (0)1 (5)
Procedural outcome
 Complete success26 (59)15 (65)11 (52)
 Partial success9 (21)3 (13)6 (29)
 Failure5 (11)1 (4)4 (19)
 Indeterminate4 (9)4 (17)0 (0)
Procedural duration, min201 ± 73179 ± 51225 ± 87
Fluoroscopy time, min44 ± 2137 ± 1651 ± 23
CMR scar volume, % of LV wall
 Total scar volume16 (12–22)18 (12–23)15 (11–20)
 Core scar volume6 (4–9)7 (4–10)6 (4–8)
 BZ volume10 (7–12)10 (8–12)9 (7–13)
CMR scar area, % of endocardial LV
 Area of ≤50% transmural scar15 (12–19)13 (11–16)17 (13–24)
 Area of 51%–75% transmural scar7 (4–10)9 (5–12)6 (4–9)
 Area of >75% transmural scar6 (3–10)7 (3–13)4 (2–7)

Values are mean ± SD, n (%), or median (interquartile range).

BMI = body mass index; BZ = border zone; CMR = cardiac magnetic resonance; eGFR = estimated glomerular filtration rate; LV = left ventricular; NICM = nonischemic cardiomyopathy; NYHA = New York Heart Association; VT = ventricular tachycardia.