Table 3.
Demographic and Electrocardiographic Parameters with Respect to Mutation and Age
| E1784K+ n=17 | E1784K− n=18 | |||||
|---|---|---|---|---|---|---|
| <40 n=11 | ≥40 n=6 | P Value | <40 n=14 | ≥40 n=4 | P Value | |
| Male sex | 5 (45%) | 3 (50%) | 1.0 | 9 (64%) | 2 (50%) | 1.0 |
| Age, y | 20.4±7.3 | 49.3±4.1 | 0.0001 | 21.7±10.0 | 55.1±3.6 | 0.001 |
| RR, ms | 804±219 | 1132±182 | 0.007 | 837±164 | 960±166 | 0.19 |
| PR, ms | 176±12 | 231±19 | 0.0001 | 166±10 | 181±12 | 0.02 |
| QRS, ms | 91±14 | 117±21 | 0.03 | 84±11 | 94±7 | 0.1 |
| QTc, ms | 465±15 | 470±19 | 0.55 | 408±18 | 407±17 | 0.96 |
| QT dispersion, ms | 36±21 | 48±22 | 0.29 | 25±11 | 39±15 | 0.13 |
| QTp‐e dispersion, ms | 45±26 | 50±21 | 0.70 | 32±14 | 39±16 | 0.32 |
| Max. ST, mV | 0.03±0.06 | 0.13±0.08 | 0.02 | 0.01±0.03 | 0.02±0.05 | 0.63 |
| Brugada type II/III | 0 | 5 (83%) | 0.001 | 0 | 0 | 1.0 |
| Ajmaline positive | 7/9 (78%) | 6/6 (100%) | 0.2 | 0/9 | 0/2 | 1.0 |