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Case Reports
. 2019 Feb;98(6):e14320.
doi: 10.1097/MD.0000000000014320.

Atrioventricular reentrant tachycardia in a child with tricuspid atresia: A case report of catheter ablation

Affiliations
Case Reports

Atrioventricular reentrant tachycardia in a child with tricuspid atresia: A case report of catheter ablation

Yefeng Wang et al. Medicine (Baltimore). 2019 Feb.

Abstract

Rationale: Atrioventricular reentrant tachycardia (AVRT) is the most common supraventricular tachycardia occurring in children. However, in complex congenital heart disease patients with a different heart anatomy and conduction system morphology, accessory pathway modification may be particularly challenging because of distortion of typical anatomic landmarks.

Patient concerns: A 10-year-old boy with tricuspid atresia and history of bidirectional Glenn operation had recurrent chest distress and palpitation for 3 months. He had multiple hospitalizations for narrow-QRS tachycardia with poor hemodynamic tolerance, despite the use of adenosine and amiodarone.

Diagnoses: AVRT. Tricuspid atresia with secundum atrial septal defect, large ventricular septal defect, and right ventricular outflow tract stenosis.

Interventions: Cardiac catheterization, electrophysiological examination, and ablation.

Outcomes: The child has not had a recurrent AVRT during 6 months of follow-up and is waiting for Fontan operation.

Lessons: Since there is an increased risk of accessory pathways in patients with tricuspid atresia, all these patients should be checked before the Fontan operation to exclude congenital accessory pathways.

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Conflict of interest statement

The authors have no conflicts of interest to disclose.

Figures

Figure 1
Figure 1
Angiocardiography showed anatomy of the heart in anteroposterior views. A, Power contrast injection via a 5-French pigtail catheter in the right atrium (RA) showed the absence of a right-sided AV valve, a secundum atrial septal defect, and a patent left-sided AV valve with left ventricular (LV) filling. B, A 5-French pigtail catheter was located in right ventricular (RV) through the ventricular septal defect. Angiography showed severe stenosis in right ventricular outflow tract. LA = left atrium, MPA = main pulmonary artery.
Figure 2
Figure 2
A, Electrocardiogram of clinical tachycardia with a cycle length of 389 ms. B, The site of earliest atrial activation was localized in the coronary sinus, which was recorded by the ablation catheter, between electrodes 1-2 and 3-4.
Figure 3
Figure 3
Location of the His-bundle electrogram and site of ablation. A, Electroanatomic maps of right atrial during tachycardia. Red circles and the catheter tip indicate the location of ablation lesions (ABL). White circles represent sites where His-bundle electrograms were recorded (HIS). B, Site of ablation, in the coronary sinus (CS) between CS1-2 and CS3-4 in left anterior oblique view.

References

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