Related Experiment Video
Updated: Jul 10, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Unexpected Coronary Sinus Embolization of a Leadless Pacemaker due to Initial Device Failure: A Case Report
Yutaro Oshima1, Tsuyoshi Nozue1, Masahiro Katamine1
1Department of Cardiology Yokohama Sakae Kyosai Hospital Yokohama Kanagawa Japan.
Abstract:
Leadless pacemakers reduce complications compared to transvenous systems, but device dislodgement and embolization can occur. We report an 81-year-old man with atrial fibrillation and bradycardia who underwent Micra implantation. Because of inner shaft damage and insufficient tine fixation, the device embolized into the coronary sinus. It was successfully retrieved using a double-snare technique, and a new device was implanted. This case highlights the importance of meticulous deployment technique and thorough intraprocedural assessment of device attachment, as well as troubleshooting strategies for unexpected embolization.
Related Concept Videos
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism, and...
Acute Coronary Syndrome I: Introduction
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
Acute Coronary Syndrome III: Diagnostic Studies
Introduction Cardiac Emergencies
Cardiomyopathy II: Dilated Cardiomyopathy

