Figure 13

Torsades de pointes, complete heart block, on quinidine for a ventricular arrhytmia. The bottom strip shows rhythm shortly after use of quinidine.

Myerburg, R.J., M.D., Castellanos, A., M.D., Kessler, K.M., M.D., Recognition, Clinical Assessment and Management of Arrhythmias and Conduction Disturbances, Hurst's The Heart, 8th ed, p 745.