case_images: PMC5358129_01
case_images: The electrocardiogram recorded in emergency room (ER).
case_images: cr-02-046-g001.jpg
case_images: PMC5358129_01_cr-02-046-g001.jpg
case_images: F1
case_images: The electrocardiogram recorded in emergency room (ER) is shown in Figure 1. The varying atrioventricular block results in long-short cycle sequences that are followed by QRS complexes with increased width (130 msec) (indicated by * in Figure 1)..