Selective his bundle pacing eliminates crochetage sign: A case report

Figure 1 Initial electrocardiogram. A: Atrial fibrillation with a long relative risk interval; B: Atrial fibrillation with crochetage pattern in leads II, III, and aVF and incomplete right bundle branch block (arrows pointing toward crochetage sign are most common).

Figure 2 Echocardiographic image. Echocardiography shows a secundum atrial septal defect that measured 2.32 cm.

Figure 3 Fluoroscopic image. The fluoroscopic image shows that the 3830 lead was located in the His-bundle region. A: Right-anterior-oblique 30° view; B: Left-anterior-oblique 40° view.

Figure 4 Postoperative electrocardiogram. Electrocardiogram showing the disappearance of crochetage sign after his-bundle pacing.