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Cardiopulmonary Resuscitation III: AED Use

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Introduction to AEDAn Automated External Defibrillator (AED) is a portable medical device that analyzes the heart's rhythm and, if necessary, delivers an electrical shock to help the heart re-establish an effective rhythm during sudden cardiac arrest (SCA). SCA occurs when the heart suddenly and unexpectedly stops beating, leading to a loss of blood flow to the brain and other vital organs. In such emergencies, time is of the essence, and using an AED, combined with Cardiopulmonary...

Cardiac Action Potential

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Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
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Ionic Basis of Cardiac Action Potentials

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The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...

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Pulse rhythm

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Related Experiment Video

Updated: Jan 17, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

Leadless Pacing and Cardioversion: Power On or Power Off?

Roland Tilz¹, Julius Nikorowitsch¹, Anna Traub²

¹Department of Rhythmology, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany; Deutsches Zentrum für Herz-Kreislauf-Forschung (DZHK), Lübeck, Germany.

JACC. Case Reports

|September 25, 2025

Summary

Electrical cardioversion can trigger a transient power-on reset (PoR) in leadless atrial pacemakers, falsely suggesting battery depletion. The device automatically recovers normal function and settings within seconds, avoiding true malfunction.

Area of Science:

Cardiology
Biomedical Engineering

Background:

Leadless atrial pacemakers offer an alternative to traditional pacing systems.
Sinus node dysfunction is a common indication for pacemaker implantation.

Keywords:

Aveir AR LP PoR cardioversion leadless pacing power-on reset

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