Table 2 In-vivo electrophysiological parameters
From: Titanium dioxide nanoparticles promote arrhythmias via a direct interaction with rat cardiac tissue
| Â | Vehicle | NPR |
|---|---|---|
P wave (ms) | 33.0 ± 0.22 | 28.9 ± 0.21** |
PQ segment (ms) | 24.2 ± 0.18 | 21.3 ± 0.21** |
QRS complex (ms) | 16.0 ± 0.09 | 15.2 ± 0.09** |
QT interval (ms) | 40.0 ± 0.28 | 31.1 ± 0.54** |
RR interval (ms) | 237.6 ± 0.90 | 231.3 ± 2.47 |
Rheobase (μA) | 21.4 ± 1.68 | 20.6 ± 2.73 |
Chronaxie (ms) | 0.75 ± 0.04 | 0.64 ± 0.04* |
CVI (m/s) | 0.63 ± 0.004 | 0.70 ± 0.004 |
CVt (m/s) | 0.33 ± 0.002 | 0.32 ± 0.002 |
Anisotropy ratio | 1.96 ± 0.01 | 2.33 ± 0.02** |