Myocardial Scar on Surface ECG: Selvester Score, but Not Fragmentation, Predicts Response to CRT
Table 5
Distribution of SSc values, and prevalence of fQRS, according to the occurrence of secondary endpoints.
SSc values
Presence of fQRS (74 pts)
Median
25/75 percentile
value
Yes
No
value
VT/VF (20 pts)
7.5
4–13
0.260
10 (50%)
10 (50%)
0.417
No VT/VF (158 pts)
6
4–10
64 (40.5%)
94 (59.5%)
HF hospitalization (34 pts)
6.5
4–13
0.432
15 (44.1%)
19 (55.9%)
0.738
No HF hospitalization (144)
6.5
4–10
59 (41%)
85 (59%)
Cardiac death (18 pts)
7.5
5–11
0.145
15 (53.6%)
13 (46.4%)
0.161
No cardiac death (160 pts)
6
4–10
59 (36.9%)
91 (56.9%)
All-cause death (28 pts)
7
4–11
0.377
9 (50%)
9 (50%)
0.444
No death (150 pts)
6
4–10
65 (40.6%)
95 (59.4%)
MACE (66 pts)
7
4–12
0.065
30 (45.4%)
36 (45.6%)
0.420
No MACE (112 pts)
6
3–9
44 (39.3%)
68 (60.7%)
Continuous variables are expressed as median and 25°/75° percentiles, and compared by the Mann–Whitney U test; categorical variables as number of patients (%) and compared by the χ2 test. SSc, Selvester score; fQRS, fragmented QRS; VT, ventricular tachycardia; VF, ventricular fibrillation; HF, heart failure; and MACE, major adverse cardiovascular event.
