Left ventricular pacing induced polymorphic ventricular tachycardia via the adaptive left ventricle pacing algorithm.
Fouad Khalil1, Freddy Del-Carpio Munoz1, Abhishek Deshmukh1
1Mayo Clinic Rochester Minnesota USA.
Clinical Case Reports
|September 5, 2020
Summary
Cardiac resynchronization therapy can cause dangerous arrhythmias. His-bundle pacing offers a more natural alternative by maintaining normal heart depolarization sequences.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Cardiac resynchronization therapy (CRT) is a common treatment for heart failure.
- CRT can sometimes lead to proarrhythmia, a life-threatening condition.
- Alternative pacing strategies are needed to mitigate CRT-related risks.
Observation:
- CRT involves stimulating the ventricles to improve synchrony.
- This stimulation can disrupt the heart's natural electrical conduction pathway.
- Proarrhythmia is a recognized complication of CRT.
Findings:
- His-bundle pacing preserves the native conduction system.
- This method maintains the physiological sequence of ventricular depolarization.
- It ensures depolarization spreads from the septum to the lateral wall and from endocardium to epicardium.
Implications:
- His-bundle pacing may be a safer alternative to CRT.
- This approach could reduce the incidence of CRT-related proarrhythmia.
- Further research is warranted to explore the long-term benefits of his-bundle pacing.
Keywords:
LV pacingQT prolongationcardiac resynchronization therapyhis‐bundle pacingpolymorphic ventricular tachycardiaproarrhythmiatransmural dispersion of repolarizationMore Related Videos
08:05Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice
Published on: June 29, 2022
3.3K
12:45Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
10.8K
Related Concept Videos
01:29Dysrhythmias III: Characteristics of Dysrhythmias
287
Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
287
01:29Cardiomyopathy V: Interprofessional Care
181
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...
181
01:25ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
309
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...
309
01:29Cardiomyopathy III: Hypertrophic Cardiomyopathy
236
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...
236
01:30Cardiomyopathy II: Dilated Cardiomyopathy
280
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
280
01:29Disturbances in Heart Rhythm
2.2K
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...
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
2.2K