(A) Multifocal or multiform PVCs; (B) R-on-T PVC; (C) first-degree AV block; (D) Wenckebach rhythm; (E) second-degree type II; (F) third-degree AV block; (G) bundle branch block. (From Jones, S: ECG Success: Exercises in ECG Interpretation. FA Davis, Philadelphia, 2008.) Source: Heart Disease, Physical Rehabilitation, 6e Citation: O’Sullivan SB, Schmitz TJ, Fulk GD. Physical Rehabilitation, 6e; 2014 Available at: http://fadavispt.mhmedical.com/DownloadImage.aspx?image=/data/books/1895/osullrehab6_ch13_f015.png&sec=136488534&BookID=1895&ChapterSecID=136488337&imagename= Accessed: October 11, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved