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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...
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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.
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Increased pulse rate01:17

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Tachycardia is a condition marked by an abnormally fast or irregular heart rate, surpassing the typical resting rate. In adults, tachycardia is characterized by a pulse rate ranging from 100 to 180 beats per minute. The increased heart rate can result in inadequate blood flow to various body parts, ultimately diminishing the oxygen supply to organs and tissues.
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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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Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
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Updated: Nov 2, 2025

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
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Surgery for Ventricular Tachycardia.

Gerald M Lawrie1

  • 1Houston Methodist DeBakey Heart & Vascular Center, Houston Methodist Hospital, Houston, Texas.

Methodist Debakey Cardiovascular Journal
|June 9, 2021
PubMed
Summary
This summary is machine-generated.

Advances in treating drug-refractory chronic ventricular tachycardia (VT) include implantable cardioverter defibrillators and refined catheter ablation techniques. Houston Methodist Hospital pioneered these diagnostic and surgical approaches during the 1980s and 1990s.

Keywords:
arrhythmia ablationleft ventricular aneurysmventricular tachycardia

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Technology

Background:

  • Chronic ventricular tachycardia (VT) poses significant treatment challenges, particularly when refractory to medication.
  • The past 50 years have seen transformative advancements in managing complex cardiac arrhythmias.
  • Early leadership in VT diagnosis and ablation set the stage for modern therapeutic strategies.

Observation:

  • Houston Methodist Hospital emerged as a key center for VT diagnosis and surgical ablation between 1980 and 1993.
  • This period was characterized by the development and refinement of innovative treatment modalities.
  • The hospital's experiences provided valuable insights into effective VT management.

Findings:

  • Automatic implantable cardioverter defibrillator (ICDT) therapy with pace-termination emerged as a crucial intervention.
  • Catheter ablation techniques for VT improved significantly through enhanced mapping and lesion generation methods.
  • Surgical ablation played a vital role in managing arrhythmias during this era.

Implications:

  • The pioneering work during this period laid the foundation for current best practices in VT treatment.
  • Lessons learned continue to inform the development of advanced cardiac care.
  • Improved patient outcomes are a direct result of these historical advancements in arrhythmia management.