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Related Concept Videos

Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

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Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
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Cardiopulmonary Resuscitation III: AED Use01:23

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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...
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Cardiomyopathy V: Interprofessional Care01:29

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Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

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Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
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Pulse rhythm01:30

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
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Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
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Related Experiment Video

Updated: Feb 27, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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A Planning and Guidance Platform for Cardiac Resynchronization Therapy.

Peter Mountney, Jonathan M Behar, Daniel Toth

    IEEE Transactions on Medical Imaging
    |July 6, 2017
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    Cardiac resynchronization therapy (CRT) improves heart failure outcomes, but suboptimal lead placement limits effectiveness. This study introduces an automated system using scar imaging and mechanical activation to optimize LV lead placement, improving CRT response rates.

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    Area of Science:

    • Cardiology
    • Medical Imaging
    • Biomedical Engineering

    Background:

    • Drug-refractory heart failure affects many patients, with cardiac resynchronization therapy (CRT) offering a potential treatment.
    • However, 30-50% of patients do not respond to CRT, often due to suboptimal left ventricular (LV) lead placement.
    • Improved LV lead placement, avoiding scar tissue and targeting latest mechanical activation, can enhance CRT response.

    Purpose of the Study:

    • To present a comprehensive, automated system for planning and guiding CRT procedures.
    • To utilize scar and mechanical activation data for precise LV lead placement.
    • To improve patient response rates to CRT.

    Main Methods:

    • Leveraging standard clinical preoperative magnetic resonance imaging (MRI) for scar and mechanical activation data.
    • Registering imaging data to a 3-D coordinate system and visualizing in novel 2-D/3-D American Heart Association plots.
    • Overlaying planning information onto live fluoroscopic images for intra-procedural guidance.

    Main Results:

    • The system successfully guided 14 CRT procedures.
    • Validation performed on diverse datasets including synthetic, phantom, volunteer, and patient data.
    • Demonstrated feasibility of using scar and mechanical activation for CRT planning.

    Conclusions:

    • The developed automated system effectively uses scar and mechanical activation imaging for CRT planning and guidance.
    • This approach has the potential to improve LV lead placement and increase patient response to CRT.
    • Further clinical implementation is warranted to confirm improved outcomes in a larger patient cohort.