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Kardiol Pol 2021 Mar 25. Epub 2021 Mar 25.

Background: Left atrial (LA) fibrosis is associated with a higher rate of recurrence of atrial fibrillation (AF) after pulmonary vein isolation (PVI). Body mass index (BMI) is strongly associated with the prevalence of AF, but there is insufficient data about the association between BMI and LA fibrosis.

Aims: To examine the association between LA fibrosis and BMI in patients with AF undergoing PVI. Read More

J Innov Card Rhythm Manag 2021 Mar 15;12(3):4442-4445. Epub 2021 Mar 15.

Division of Cardiology, McLaren Greater Lansing Hospital, Michigan State University, Lansing, MI, USA.

Here, we discuss mapping of an atrioventricular reciprocating tachycardia (AVRT) using color-coding and a coherence module of the CARTO mapping system (Biosense Webster, Diamond Bar, CA, USA). AVRT is a reentry tachycardia and, when the atrial exit site of the arrhythmia circuit was mapped in this case, it appeared to have a focal centrifugal activation pattern as depicted by coherent mapping. Read More

Eur Heart J Case Rep 2021 Feb 12;5(2):ytaa547. Epub 2021 Jan 12.

Department of Cardiovascular Medicine, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ward, Tokyo 113-8510, Japan.

Background : Biatrial tachycardia (BiAT) is a rare form of atrial macro-re-entrant tachycardia. Precise identification of interatrial connections and circuits of the BiAT is difficult. And incomplete understanding of the re-entrant circuit may lead to unnecessary ablation, thus increasing the risk of complications. Read More

Zhonghua Xin Xue Guan Bing Za Zhi 2021 Mar 24;49(3):229-235. Epub 2021 Mar 24.

Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.

To analyze the three-dimensional distribution of functional sinus node, right phrenic nerve and superior vena cava(SVC)-right atrial muscle sleeves by three-dimensional electrophysiological technique in patients with atrial fibrillation (AF), and to investigate the efficacy and safety of segmental radiofrequency catheter ablation (RFCA) for isolation of superior vena cava in these patients In this retrospective study, we enrolled 136 AF patients who underwent first RFCA in the First Affiliated Hospital of Zhengzhou University from July 2018 to June 2019 and all patients underwent SVC isolation under sinus rhythm. Baseline clinical data of patients were collected. The functional sinus node was defined by activation mapping, pacing was guided by three-dimensional mapping (Carto) system, localization of the right phrenic nerve was defined by pacing map, the superior vena cava-right atrial muscle sleeves was determined according to the change of potential during SVC isolation, segmental RFCA was performed for SVC isolation, the three-dimensional distribution of functional sinus node, right phrenic nerve and superior vena cava(SVC)-right atrial muscle sleeves was determined by three-dimensional electrophysiological technique. Read More

Postepy Kardiol Interwencyjnej 2020 Sep 2;16(3):321-329. Epub 2020 Oct 2.

Institute of Cardiology, John Paul II Hospital, Jagiellonian University Medical College, Krakow, Poland.

Introduction: Radiofrequency catheter ablation (RFCA) is an important method of treatment of ventricular arrhythmias (VAs). In the majority of RFCA, fluoroscopy is used, exposing patients and medical staff to all related side effects. Current experience of non-fluoroscopic (NF)-RFCA in VAs from the left side is limited. Read More