FIGURE 1 A standard 12-lead electrocardiogram, characteristic of Andersen–Tawil syndrome
From the following article:
Ventricular ectopy during REM sleep: implications for nocturnal sudden cardiac death
Arturo Garcia-Touchard, Virend K Somers, Tomas Kara, Jiri Nykodym, Abu Shamsuzzaman, Paola Lanfranchi and Michael J Ackerman
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Figure 1. A standard 12-lead electrocardiogram, characteristic of Andersen–Tawil syndrome
A prolonged QU interval with a prominent U-wave (indicated by arrowheads) is evident, along with the presence of ventricular ectopy (indicated by asterisks).