Successful Cryoablation of Incessant Fast-Slow Atypical Atrioventricular Nodal Reentrant Tachycardia in a Child with Tachycardia-Induced Cardiomyopathy [Turk Kardiyol Dern Ars]
Turk Kardiyol Dern Ars. Ahead of Print: TKDA-39888 | DOI: 10.5543/tkda.2017.39888

Successful Cryoablation of Incessant Fast-Slow Atypical Atrioventricular Nodal Reentrant Tachycardia in a Child with Tachycardia-Induced Cardiomyopathy

Yakup Ergül1, Ahmet İrdem1, Osman Esen2, Alper Güzeltaş1
1Department Of Pediatric Cardiology, Mehmet Akif Ersoy Thoracic And Cardiovascular Surgery Center And Research Hospital, Istanbul, Turkey
2Department Of Anesthesia, Mehmet Akif Ersoy Thoracic And Cardiovascular Surgery Center And Research Hospital, Istanbul, Turkey

A 15-year-old female patient applied to our clinic with heart failure(HF). 12 lead electrocardiography showed heart rate of 170bpm, negative P waves in leads DII, DIII, aVF and long RP tachycardia (LRPT). Echocardiography showed shortening fraction(SF) %20. In electrophysiology study, during tachycardia, AH was 52msec and HA was295 msec. During ventricular entrainment PPI-TCL was measured 225msec. There was a pseudo V-A-A-V response. These findings confirmed the diagnosis of aAVNRT. Successful slow pathway cryoablation was performed with 8 mm tip cryocatheter. After 2 weeks, SF was measured 34%. During 2 year follow-up period there was not seen recurrence. In conclusion; fast-slow aAVNRT should be a part of differential diagnosis of incessant LRPT’s leading to HF. Cryoablation can be used succesfully in aAVNRT.

Keywords: Heart failure, atypical atrioventricular nodal reentrant tachycardia, cryoablation, child

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Corresponding Author: Yakup Ergül, Türkiye
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