Related Experiment Video
Updated: Aug 9, 2026

Sterile Pericarditis in Aachener Minipigs As a Model for Atrial Myopathy and Atrial Fibrillation
Published on: September 24, 2021
Entrapment of pacemaker lead by a large net-like Eustachian valve within the right atrium
Rüdiger Dissmann1, Joachim Schröder, Heinz Völler
1Abteilung Kardiologie, Klinikum Bremerhaven Reinkenheide, Medizinische Klinik I, Postbrookstrasse 103, 27574 Bremerhaven, Germany. ruediger.dissmann@zkr.de
Abstract:
During pacemaker implantation in a patient with permanent atrial fibrillation, it remained impossible to advance a passive fixation lead with fins through the right atrium. However, a lead with a retractable screw easily passed the right atrium and was positioned in the right ventricle. Transesophageal echocardiography revealed an extensive net-like perforated Eustachian valve within the right atrium that had caused entrapment of the anchor fins during lead implantation. Remnants of embryonal structures within the right atrium should be considered a rare possible barrier during pacemaker implantation.
More Related Videos
Related Concept Videos
Cardiac Catheterization II: Right Heart Catheterization
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

