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Defining the causes for Fontan circulatory failure in total cavopulmonary connection patients.
Interdiscip Cardiovasc Thorac Surg
November 2024
Department of Cardiac Surgery, University Hospitals Leuven, Leuven, Belgium.
Objectives: This study aims to identify the causes of failure in Fontan patients with a total cavopulmonary connection.
Methods: We conducted a comprehensive review of all patients who underwent a total cavopulmonary connection procedure at our centre between 1988 and 2023, aiming to identify and analyse the factors contributing to Fontan failure (defined as mortality, heart transplantation, Fontan takedown, protein-losing enteropathy, plastic bronchitis or New York Heart Association Functional Classification class III or IV).
Results: The study included 217 patients (median age at time of Fontan completion 3.
A narrow complex tachycardia with a short HV interval: What is the mechanism?
Pacing Clin Electrophysiol
January 2025
Division of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
The case was a 15-year-old male with a history of paroxysmal supraventricular tachycardia refractory to medical therapy and prior catheter. A repeat electrophysiology study and catheter ablation were applied. Baseline AH and HV intervals were 100 and 55 ms during normal sinus rhythm (NSR), respectively.
View Article and Find Full Text PDFEpidemiology of Postoperative Junctional Ectopic Tachycardia in Infants Undergoing Cardiac Surgery.
Ann Thorac Surg
June 2024
The Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
Background: Junctional ectopic tachycardia (JET) complicates congenital heart surgery in 2% to 8.3% of cases. JET is associated with postoperative morbidity in single-center studies.
View Article and Find Full Text PDFJunctional rhythm during cryoablation for typical atrioventricular nodal reentrant tachycardia.
J Cardiovasc Electrophysiol
August 2023
Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Introduction: Cryoablation is being used as an alternative to radiofrequency (RF) ablation for atrioventricular nodal reentrant tachycardia (AVNRT) owing to the lower risk of atrioventricular block (AVB) compared to RF ablation. Junctional rhythm often occurs during successful application of RF ablation for AVNRT. In contrast, junctional rhythm has rarely been reported to occur during cryoablation.
View Article and Find Full Text PDFHigh temperature and hyperkalemia cause exit block of action potentials at the atrioventricular junction of rainbow trout (Oncorhynchus mykiss) heart.
J Therm Biol
December 2022
University of Eastern Finland, Department of Environmental and Biological Sciences, P.O.Box 111, 80101, Joensuu, Finland.
At critically high temperatures, atrioventricular (AV) block causes ventricular bradycardia and collapse of cardiac output in fish. Here, the possible role of the AV canal in high temperature-induced heart failure was examined. To this end, optical mapping was used to measure action potential (AP) conduction in isolated AV junction preparations of the rainbow trout (Oncorhynchus mykiss) heart during acute warming/cooling in the presence of 4 or 8 mM external K concentration.
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