TABLE 5.
Prevalence and diagnostic utility of ECG Features Based on Combination of Criteria
| Parameter | Prevalencea | Diagnostic Utilityb | ||
|---|---|---|---|---|
| ARVD (n=100) |
Controls (n=57) |
Sensitivity | Specificity | |
| No RBBB | ||||
| Depolarization Criteria (QRSd > 110 ms, TAD, Epsilon wave)† | 37(54) | 3(11) | 54 (42–67) | 89 (71–98) |
| Repolarization Criteria (TWI thru V3, TWI in Inferior leads (2 out of 3)† | 52(76) | 2(7) | 76 (65–86) | 93 (76–99) |
| (Combination of Repolarization and Depolarization Criteria) | ||||
| 1 Criterion† | 60 (88) | 5 (19) | 88 (78–95) | 81 (62–94) |
| 2 Criteria† | 29 (43) | 0 (0) | 43 (31–55) | 100 (87–100) |
| IRBBB | ||||
| Depolarization Criteria (QRSd > 110 ms, TAD, Epsilon wave)† | 13(87) | 8(36) | 87 (60–98) | 64 (41–83) |
| Repolarization Criteria (TWI thru V3, TWI in Inferior leads (2 out of 3)† | 13(87) | 1(5) | 87 (60–98) | 95 (77–100) |
| (Combination of Repolarization and Depolarization Criteria) | ||||
| 1 Criterion† | 15 (100) | 9 (41) | 100 (78–100) | 59 (36–79) |
| 2 Criteria† | 11 (73) | 0 (0) | 73 (45–92) | 100 (85–100) |
| CRBBB | ||||
| Depolarization Criteria (r'/s amplitude < 1)† | 15(88) | 1(13) | 88 (64–99) | 88 (47–100) |
| Repolarization Criteria (TWI thru V4, TWI in inferior leads (2 out of 3))* | 13(76) | 2(25) | 76 (50–93) | 75 (35–97) |
| (Combination of Repolarization and Depolarization Criteria) | ||||
| 1 Criterion† | 17 (100) | 3 (38) | 100 (80–100) | 63 (24–91) |
| 2 Criteria† | 11 (65) | 0 (0) | 65 (38–86) | 100 (63–100) |
†
Indicates P<0.01
*
Indicates P<0.05
a
Data expressed as frequency (%)
b
Data expressed as point estimate (95% Confidence Interval)