ABC | Volume 114, Nº6, June 2020

Viewpoint Wu et al. Preventing Torsades de Pointes during Hydroxychloroquine/Azithromycin Treatment Arq Bras Cardiol. 2020; 114(6):1061-1066 Figure 1 – QT Interval Source: Collection, Heart Institute of the University of São Paulo (InCor HCFMUSP). Figure 3 – Examples of measurement of QT interval by the tangent method. Source: Collection, Heart Institute of the University of São Paulo (InCor HCFMUSP). Figure 2 – Long QT with torsades de pointes. Source: Collection, Heart Institute of the University of São Paulo (InCor HCFMUSP). 1062