Table 2.
Demographic and Electrocardiographic Parameters with Respect to Mutation and Polymorphism
| E1784K+ n=17 | E1784K− n=18 | |||||
|---|---|---|---|---|---|---|
| H558R+ n=9 | H558R− n=8 | P Value | H558R+ n=9 | H558R− n=9 | P Value | |
| Male sex (%) | 5 (56%) | 3 (38%) | 0.46 | 7 (78%) | 4 (44%) | 0.15 |
| Age, y | 35.1±16.3 | 25.7±13.9 | 0.22 | 17.6±9.4 | 40.4±14.6 | 0.002 |
| RR, ms | 911±215 | 930±315 | 0.88 | 822±196 | 909±132 | 0.29 |
| PR, ms | 208±34 | 183±22 | 0.94 | 154±15 | 170±16 | 0.04 |
| QRS, ms | 102±24 | 98±16 | 0.78 | 80±8 | 96±12 | 0.005 |
| QTc, ms | 464±17 | 470±15 | 0.42 | 412±15 | 404±20 | 0.34 |
| QT dispersion, ms | 44±20 | 36±24 | 0.74 | 29±14 | 28±16 | 0.95 |
| QTp‐e dispersion, ms | 43±24 | 51±25 | 0.52 | 38±18 | 34±15 | 0.44 |
| ST elevation in V1, mV | 0.05±0.08 | 0.04±0.07 | 0.74 | 0.11±0.25 | 0.11±0.33 | 1.0 |
| ST elevation in V2, mV | 0.03±0.05 | 0.06±0.09 | 0.46 | 0 | 0.02±0.03 | 0.35 |
| ST elevation in V3, mV | 0.01±0.03 | 0.03±0.06 | 0.42 | 0.01±0.02 | 0.02±0.04 | 0.33 |
| Brugada type II/III | 5 (55%) | 2 (25%) | 0.2 | 0 | 0 | 1.0 |
| Ajmaline positive | 6/8 (75%) | 7/7 (100%) | 0.2 | 0/7 | 0/4 | 1.0 |