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Postoperative automatic junctional tachycardia 8 hours after complete repair of AV septal defect in a 3-month-old infant. Using the V1−V2−V3 montage
from a standard electrocardiographic recording device, the device cables corresponding to V1 and V2 are connected to the two temporary atrial epicardial
pacing wires. This provides bipolar atrial electrograms in V1 (arrows) and V2. Although not necessary in this case because of the large ventricular
electrograms in V1 and V2, a standard V3 provides a normal QRS for timing reference. Note the regular narrow complex ventricular rate at 240 beats/min,
atrial rate of 110 beats/min, and V-A dissociation.
Source: Chapter 47. Arrhythmias in Children and in Patients with Congenital Heart Disease, Hurst's The Heart, 13e
Citation: Fuster V, Walsh RA, Harrington RA. Hurst's The Heart, 13e; 2011 Available at: Accessed: May 13, 2017
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