During EPS the patient and the operator as well as the staff are exposed to radiation. Electrophysiology study (EPS) for diagnosis and ablation in AVNRT is an established treatment and recommended by current guidelines (class 1 recommendation) with a high success and a low complication rate (<1%) also leading to an increase in patients' quality of life ( 1, 3– 5). Clinically, the patients often suffer from neck pounding and have visible pulsations in the neck, colloquially referred to as a “frog-sign” ( 2). The ECG shows a narrow complex tachycardia with heart rate of about 170–210 beats per minute. Furthermore, it is mostly seen in younger people without known heart disease ( 1). It appears more often in women than in men. Hence, EMS + FIS is beneficial for both the operator and the patients by reducing the radiation exposure.Ītrioventricular nodal reentrant tachycardia (AVNRT) is a common supraventricular tachycardia (SVT). It leads to a significant reduction of both FT and DAP without affecting PT and safety. Furthermore, we found no significance with regard to complications.Ĭonclusion: The use of EMS+FIS is safe and feasible. Results: We found that the use of EMS + FIS led to a significant reduction of FT (449.90 ± 217.21 vs. Eighty-nine patients were ablated conventionally using only fluoroscopy, 30 patients were ablated using EMS + FIS. Materials and Methods: We included 119 patients who underwent AVNRT ablation in our study. In this study we analyzed patients undergoing either conventional AVNRT ablation or by using an EMS with a fluoroscopy integrating system (FIS). One of their advantages is their potential in decreasing the need of fluoroscopy time (FT). Electroanatomical mapping systems (EMS) are widely used in complex arrhythmias. Usually, ablation of AVNRT is performed conventionally using only fluoroscopy. Current guidelines recommend electrophysiology study (EPS) and ablation, which have been proven to show high success rates with very low complication rates. Introduction: Atrioventricular nodal reentrant tachycardia (AVNRT) is a common supraventricular tachycardia. 4Department of Cardiology, University Hospital Helios Wuppertal, Wuppertal, Germany.3Department of Cardiology, Petrus Hospital, Wuppertal, Germany.2Witten-Herdecke University, Witten, Germany.1Department of Cardiology, Heart Centre Niederrhein, Helios Clinic Krefeld, Krefeld, Germany.Christian Blockhaus 1,2 * †, Jan-Erik Gülker 2,3 †, Alexander Bufe 1,2, Melchior Seyfarth 2,4, Buelent Koektuerk 1,2 and Dong-In Shin 1,2
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