Abstract
Improvement of Pacing-Induced Dyssynchrony by Right Ventricular Septal Stimulation in a Child with Tetralogy of Fallot
Highlights
Complete atrioventricular block (CAVB) is not an uncommon complication after surgical correction of tetralogy of Fallot (TOF)
Following single-site right ventricular (RV) midseptal pacing, a 12-lead surface ECG revealed a shorter duration of the QRS complex and a left bundle-branch block pattern with positive paced QRS complexes in inferior leads
An echocardiographic assessment showed an increase in fractional area change (FAC) (39%) and tricuspid annular plane systolic excursion (TAPSE) (15 mm), with a reduction in the RV diameters 3 months after the therapy
Summary
Complete atrioventricular block (CAVB) is not an uncommon complication after surgical correction of tetralogy of Fallot (TOF). The choice of the ventricular pacing site in patients requiring pacemaker therapy depends on factors such as age, weight, presence of a venous anomaly, and intracardiac short -circuit. The harmful effects of ventricular pacing are most pronounced during right ventricular (RV) stimulation. RV pacing sites have been determined to be optimal in some patients with and without congenital heart disease.[1]
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