Table 2.
Electrocardiographic parameters of the study population
| Control subjects (n=40) |
E-Cigarette User (n=36) |
P-value | |
| Heart rate (Bpm) | 72.5±9.8 | 76±9.1 | <0.001 |
| RR interval (ms) | 0.842±0.1 | 0.806±0.2 | 0.004 |
| Tp-e (ms) | 74.9±6.4 | 80.1±4.1 | <0.001 |
| Corrected Tp-e (ms) | 82.9±7.5 | 87.8±6.3 | 0.003 |
| QT minimum (ms) | 352.8±20.6 | 360.8±17.3 | 0.060 |
| QT maximum (ms) | 378.8±24.6 | 388.6±16.8 | 0.040 |
| Corrected QT minimum (ms) | 389.9±20.9 | 394.9±19.7 | 0.280 |
| Corrected QT maximum (ms) | 418.6±25.3 | 425.1±20.4 | 0.227 |
| Mean Corrected QT (ms) | 404.3±22 | 409.4±19.7 | 0.291 |
| QT dispersion (ms) | 25.9±13.6 | 27.9±10.9 | 0.183 |
| Corrected QT dispersion (ms) | 28.7±14.9 | 30.6±12.4 | 0.268 |
| Tp-e/QT (ms) | 0.20±0.013 | 0.21±0.011 | 0.002 |
| Tpe/meanQTc (ms) | 0.18±0.016 | 0.20±0.014 | 0.003 |
Expressed as Mean ± Standard Deviation. Bpm: Beats per minute, Tp-e: Peak-to-end interval of the T wave