Figure 6From: Titanium dioxide nanoparticles promote arrhythmias via a direct interaction with rat cardiac tissueSusceptibility to arrhythmias in Vehicle and NP R rats. A. Ventricular ectopic couplet (top) and ventricular fibrillation (bottom) recorded during evaluation of the effective refractory period (ERP). Scale bar =500 ms. B. Evaluation of ERP in Vehicle and NPR. **, p < 0.005. C. Percentage of inducible arrhythmc events.Back to article page