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. 2003 Jul 8;8(3):252–261. doi: 10.1046/j.1542-474X.2003.08316.x

Figure 3.

Figure 3

Segments of electrocardiogram (Lead II). showing the early stages of natural fibrillation, the effects of KCl and of revival following use of CaCl2 (O‐42). A, control and initial tachysystolic stage; B, coarse incoordination, minutes later; C, tremulous incoordination after 2 minutes; D, 2 minutes; after use of KCl; E, 12 minutes after; F, minutes; after; G, initial idioventricular beats, recorded 19 minutes after fibrillation first started; H, 30 minutes after record; H. Time 0.04 and 2 seconds.