Skip to main content
. Author manuscript; available in PMC: 2008 Aug 1.
Published in final edited form as: Heart Rhythm. 2007 Apr 10;4(8):1072–1080. doi: 10.1016/j.hrthm.2007.03.040

Figure 1.

Figure 1

Electrocardiograms of patient MMRL23 recorded during the first day of hospitalization. A: 12-lead electrocardiogram of evolving anterior myocardial infarction. B to F: single-lead monitor recordings. B: Episode of polymorphic VT deteriorating to VF. The transition from polymorphic VT to VF is missing because the monitor lead was disconnected during resuscitation. C: Onset of the VF episode shown in panel B. Note the accentuated ST depression and the short coupling interval (R-on-T phenomenon) of the ventricular ectopic beats, including the one initiating the polymorphic VT/VF. D and E: Additional episodes of non-sustained polymorphic VT starting with short-coupled extrasystoles. F: Additional VF episode that required electrical cardioversion (initiation not shown).