A second example is illustrated in this tracing. The P waves are quite clear in leads aVF, V1, V2 and V3, but in the other leads, the movement artifacts obscure the P waves and the tracing resembles atrial fibrillation. Book traversal links for 7.3.28 (121) 7.3.27 (120) Up 7.4.0 Wide Complex Beats and Rhythms (frame 122)