Figure 7

Nonsustained forms of V.T. runs of repetitive vent. Impulses (rates > 100/m) lasting < 30s are subgrouped into salvos of 3 to 5 consecutive impulses and nonsustained VT of six or more impulses in duration.

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 736.