Table 5.
ECG indices (means) of sham and TBI groups 24 hours after TBI (n = 8 in each group)
| Group | Sham | TBI | P value |
|---|---|---|---|
| Variable | |||
| Heart rate (BPM) | 265.5 ± 15.8 | 247.7 ± 15.3 | 0.43 |
| R-R interval (ms) | 231.9 ± 13.9 | 248.8 ± 14.2 | 0.43 |
| P-R interval (ms) | 45.0 ± 2.4 | 52.7 ± 2.2* | 0.03 |
| P duration (ms) | 11.2 ± 1.0 | 15.7 ± 1.7* | 0.04 |
| QRS interval (ms) | 17.2 ± 0.3 | 18.5 ± 0.8 | 0.50 |
| QT interval (ms) | 48.3 ± 0.8 | 54.2 ± 4.3 | 0.20 |
| QTc interval (ms) | 101.4 ± 3.6 | 109.7 ± 8.8 | 0.40 |
| T peak-Tend (ms) | 13.3 ± 1.5 | 19.8 ± 3.6 | 0.12 |
| P amplitude (mV) | 0.04 ± 0.02 | 0.08 ± 0.01 | 0.07 |
| Q amplitude (mV) | 0.02 ± 0.01 | 0.02 ± 0.01 | 0.46 |
| R amplitude (mV) | 0.84 ± 0.1 | 0.80 ± 0.1 | 0.60 |
| S amplitude (mV) | -0.31 ± 0.05 | -0.29 ± 0.1 | 0.6 |
| ST height (mV) | 0.07 ± 0.01 | 0.07 ± 0.02 | 0.68 |
| T amplitude (mV) | 0.13 ± 0.01 | 0.12 ± 0.03 | 0.60 |
*
P<0.05 between TBI and Sham group. Unpaired t-test. BPM, beat per minute