Fig. 3From: Subchronic exposure to titanium dioxide nanoparticles modifies cardiac structure and performance in spontaneously hypertensive ratsHeart rate variability indexes and arrhythmia evaluation. Heart rate variability parameters and spontaneous arrhythmic events in CTRL (triangles) and TiO2-NP (square) groups. a SDRR duration (ms). b r-MSSD duration (ms). c Sinus pauses (SP, number of events). d Atrio-ventricular blocks (AV block, number of events). Kruskal-Wallis (post hoc analyses: Dunn’s multiple comparison’s) was performed and statistical significance was set at p < 0.05. ● vs CTRL; * vs corresponding 1° week; # vs corresponding 3° week; § vs corresponding 6° week. Data are represented as median and IQRBack to article page