[Permanent AV junction (Coumel type) reciprocal tachycardia]
D A Rodríguez1, F Rosas, L A Jumbo
1Departamento de Electrofisiología y Marcapasos, Fundación Clínica A. Shaio, Bogotá, Colombia. diegoand@yahoo.com
Archivos De Cardiologia De Mexico
|September 22, 2001
Summary
Permanent auriculo-ventricular junctional reciprocating tachycardia (AVJRT) is an infrequent arrhythmia, often affecting women and linked to reversible heart dysfunction. Radiofrequency ablation is a successful treatment for this condition.
Area of Science:
- Electrophysiology
- Cardiology
- Cardiac Arrhythmias
Context:
- Permanent auriculo-ventricular junctional reciprocating tachycardia (AVJRT) is a rare tachycardia, typically incessant and linked to slow retrograde conduction pathways.
- Understanding the clinical profile and treatment outcomes of AVJRT is crucial for effective patient management.
Purpose:
- To characterize the clinical and electrophysiological features of patients diagnosed with permanent AVJRT.
- To evaluate the efficacy of therapeutic interventions, particularly radiofrequency ablation, for permanent AVJRT.
Summary:
- A study of nine patients with permanent AVJRT revealed a predominant demographic of women with symptoms like dyspnea and palpitations.
- The most common accessory pathway location was right postero-septal (77.7%). Radiofrequency ablation achieved an 87.5% success rate, with significant improvement in left ventricular function observed in affected patients.
- Surgical treatment was successful in two cases, including one after failed ablation.
Impact:
- This study highlights permanent AVJRT as an uncommon arrhythmia associated with reversible left ventricular dysfunction, emphasizing the efficacy of radiofrequency ablation.
- Findings underscore the importance of early diagnosis and intervention for patients with AVJRT to improve cardiac function and prevent recurrence.
More Related Videos
Related Concept Videos
01:17Increased pulse rate
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.
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
01:29Disturbances 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...
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
01:28Dysrhythmias II: Classification of Tachyarrhythmias
Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
01:29Dysrhythmias III: Characteristics of Dysrhythmias
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 minute.
01:18Dysrhythmias IV: Characteristics of Bradyarrhythmias
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
01:25ECG 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...