Related Experiment Video

Updated: Sep 26, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
16:40

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation

Published on: February 28, 2012

[Predictors of life-threatening arrhythmias in patients with implanted cardioverters-defibrillators]

A Tiroke, A L Syrkin, O N Ganeeva

    Klinicheskaia Meditsina
    |April 18, 2003
    PubMed

    Insights

    Life-threatening cardiac arrhythmia in patients with implantable cardioverter-defibrillators (CD) is influenced by heart failure, prior induced ventricular tachycardia, and myocardial infarction history. Identifying high-risk patients can improve ICD therapy and patient quality of life.

    Area of Science:

    • Cardiology
    • Electrophysiology
    • Medical Device Technology

    Context:

    • Implantable cardioverter-defibrillators (ICDs) are crucial for managing life-threatening cardiac arrhythmias.
    • Predicting ICD discharge frequency and onset of arrhythmias is vital for patient management.
    • Understanding risk factors is key to optimizing ICD therapy and patient outcomes.

    Purpose:

    • To identify and analyze factors influencing the onset and frequency of life-threatening cardiac arrhythmias in patients with ICDs.
    • To determine specific patient characteristics associated with increased arrhythmia events.
    • To stratify patients into high-risk groups for proactive management.

    Summary:

    • A study of 149 patients with ICDs examined 70 characteristics to identify arrhythmia predictors.
    • Key factors identified include NYHA class III-IV heart failure, induced ventricular tachycardia, myocardial infarction (MI) history (especially multiple MIs), and supraventricular tachycardia.
    • These findings enable the selection of high-risk patient groups.

    Impact:

    • Provides data for developing recommendations to reduce ventricular tachyarrhythmia and ICD discharges.
    • Aims to enhance the quality of life for patients with ICDs.
    • Can inform and refine indications for ICD implantation, ensuring appropriate patient selection.

    More Related Videos

    Porcine Cardiac Arrest Model Using an Implantable Defibrillator08:33

    Porcine Cardiac Arrest Model Using an Implantable Defibrillator

    Published on: January 9, 2026

    Related Concept Videos

    Disturbances in Heart Rhythm01:29

    Disturbances in Heart Rhythm

    Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
    Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
    ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

    ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

    Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
    Dysrhythmias V: Evaluating Dysrhythmias01:30

    Dysrhythmias V: Evaluating Dysrhythmias

    Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
    Dysrhythmias VI: Management of Dysrhythmias01:25

    Dysrhythmias VI: Management of Dysrhythmias

    Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
    Mechanism of Cardiac Arrhythmias01:28

    Mechanism of Cardiac Arrhythmias

    Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
    Cardiopulmonary Resuscitation III: AED Use01:23

    Cardiopulmonary Resuscitation III: AED Use

    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...