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Updated: Sep 23, 2026

Porcine Cardiac Arrest Model Using an Implantable Defibrillator
08:33

Porcine Cardiac Arrest Model Using an Implantable Defibrillator

Published on: January 9, 2026

[Unmotivated malfunction of implanted cardioverter-defibrillator and ways of its correction]

A Tiroke, O N Ganeeva, A L Syrkin

    Klinicheskaia Meditsina
    |July 15, 2003
    PubMed

    Insights

    Unmotivated cardioverter-defibrillator (CD) malfunctions in patients with ventricular tachyarrhythmia risk can be reduced. Strategies include improved detection algorithms, equipment upgrades, and managing underlying conditions like ischemia and electrolyte imbalances.

    Area of Science:

    • Cardiology
    • Biomedical Engineering

    Context:

    • Implanted cardioverter-defibrillators (CD) are crucial for managing ventricular tachyarrhythmia.
    • Patients with these devices are at high risk for device malfunction.
    • Understanding causes of inappropriate shocks is vital for patient care.

    Purpose:

    • To identify common causes of unmotivated cardioverter-defibrillator (CD) malfunction.
    • To propose methods for reducing the frequency of these malfunctions in at-risk patients.

    Summary:

    • The study analyzed 149 patients with implanted cardioverter-defibrillators (CD), identifying supraventricular tachycardia, brief ventricular tachycardia episodes, T-wave oversensing, lead issues, and electrode dislocation as causes of unmotivated shocks.
    • A method to decrease CD malfunction frequency is presented, emphasizing drug therapy, enhanced detection algorithms, and addressing myocardial ischemia and electrolyte disorders.

    Impact:

    • Implementing proposed strategies can improve cardioverter-defibrillator (CD) therapy efficacy.
    • Reducing inappropriate shocks enhances patient quality of life and reduces healthcare burden.
    • Advances in device algorithms and patient management can optimize arrhythmia control.

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