Effects of childhood obesity on myocardial performance, autonomic and conduction properties of the heart.

Background: Childhood obesity tends to persist into adulthood and associated with increase in developing ischemic and non-ischemic cardiovascular diseases. We aimed to evaluate the effect of obesity on cardiac functions, atrial electromechanical coupling, and heart rate response, which are considered to be predictors of atrial fibrillation and sudden cardiac arrest.

Methods: Study population included 52 obese children and 52 healthy controls.

Two decades of experience on ablation in children with Ebstein's anomaly.

Introduction: Accessory pathways are commonly seen due to delamination of tricuspid valve leaflets. In addition to accessory pathways, an enlarged right atrium due to tricuspid regurgitation and incisional scars creates substrates for atrial re-entries and ectopic tachycardia. We sought to describe our experience with catheter ablation in children with Ebstein's anomaly.

Empiric slow-pathway ablation results for presumed atrioventricular nodal reentrant tachycardia in pediatric patients.

Background: In pediatric patients with documented narrow QRS tachycardia that is suggestive of atrioventricular nodal reentrant tachycardia (AVNRT) and not inducible in electrophysiological study (EPS), empiric slowpathway ablation (ESPA) may be considered. There is limited data in children about this topic.

Methods: Seventy-nine patients who underwent cryoablation and/or radiofrequency ablation (RFA) for presumed AVNRT between January 2010 and January 2020, with no inducible tachycardia and no other tachycardia mechanisms during EPS, were included in this study.

Pacemaker lead-induced tricuspid stenosis treated with percutaneous valvotomy.

Background: Tricuspid stenosis is an uncommon complication of ventricular pacemaker electrode implantation, with few cases reported in the literature.

Case: We present an 18-year-old male who developed severe tricuspid stenosis 15 years after endocardial VVI pacemaker implantation for complete AV block following a surgically repaired ventricular septal defect.

Conclusion: In this case we have shown that percutaneous balloon valvuloplasty was performed and successful in treating this complication.

Transcatheter baffle leak closure via an amplatzer septal occluder in a senning-operated child.

Senning operation is a surgical treatment for transposition of great arteries that can be complicated by post-procedural atrial or caval baffle leaks. We present a 6-year-old boy with a history of Senning repair for transposition of great arteries, who developed a pulmonary venous baffle leak. Percutaneous baffle leak closure was successfully performed using an Amplatzer septal occluder.