TABLE 3.
Relative Prevalence of ECG Features of ARVD and Normal Controls with and without RBBB
| VARIABLES | ARVD without IRBBB/ CRBBB (n=68 ) |
ARVD with IRBBB (n= 15 ) |
ARVD with CRBBB (n=17 ) |
Controls without IRBBB/ CRBBB' (n= 27) |
Controls with IRBBB (n= 22) |
Controls with CRBBB (n= 8) |
P* | P† | P‡ |
|---|---|---|---|---|---|---|---|---|---|
| Right precordial T wave inversion through V2 | 57 (84) | 12 (80) | 13 (76) | 3 (11) | 6 (27) | 3 (38) | 0.001 | 0.002 | 0.058 |
| Right precordial T wave inversion through V3 | 48 (71) | 11 (73) | 12 (71) | 1 (4) | 1 (5) | 3 (38) | 0.001 | 0.001 | 0.115 |
| Right precordial T wave inversion through V4 | 35 (51) | 9 (60) | 10 (59) | 1 (4) | 0 (0) | 1 (12) | 0.001 | 0.001 | 0.03 |
| T wave inversion in Inferior leads (2 out of 3) | 28 (41) | 7 (47) | 9 (53) | 2 (7) | 0 (0) | 1 (13) | 0.001 | 0.001 | 0.088 |
| Epsilon Wave | 5 (7) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0.317 | - | - |
| QRS prolongation in right precordial leads QRS> 110ms | 29 (43) | 12 (80) | 17 (100) | 1 (4) | 2 (9) | 8 (100) | 0.001 | 0.001 | - |
| Parietal Block | 9 (13) | 6 (40) | 8 (47) | 1 (4) | 0 (0) | 4 (50) | 0.172 | 0.03 | 0.891 |
| Prolonged terminal activation duration | 31 (46) | 12 (80) | 17 (100) | 3 (11) | 8 (36) | 7 (88) | 0.002 | 0.009 | 0.137 |
| Increased ratio in QRSd of the right versus left precordial leads | 15 (22) | 6 (40) | 6 (35) | 6 (21) | 2 (9) | 5 (63) | 0.986 | 0.025 | 0.201 |
| r'/s ratio < 1 | - | 13 (93) | 15 (88) | - | 21 (95) | 1 (14) | - | 0.74 | 0.001 |
Values are n (%)
*
ARVD without IRBBB/CRBBB' vs control without IRBBB/CRBBB pattern
†
ARVD with IRBBB vs control with IRBBB
‡
ARVD with CRBBB vs control with CRBBB