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Disturbances in Heart Rhythm

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 Arrhythmias

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 VI: Management of Dysrhythmias

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...

Dysrhythmias V: Evaluating Dysrhythmias

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 IV: Characteristics of Bradyarrhythmias

Dysrhythmias 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...

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[Atrial flutter ablation: initial experience in a general hospital].

F Georger¹, A Ouakli, S Shadfar

¹Service de cardiologie, hôpital de Narbonne, boulevard Dr-Lacroix, 11100 Narbonne, France. georger.f@wanadoo.fr

Annales De Cardiologie Et D'Angeiologie

|December 29, 2006

Summary

Radiofrequency catheter ablation effectively treats right atrial flutter, achieving a 96% success rate. This minimally invasive procedure for cavo-tricuspid isthmus ablation offers a safe and efficient treatment option for patients with this common arrhythmia.

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Area of Science:

Electrophysiology
Cardiology
Minimally Invasive Procedures

Context:

Right atrial flutter is a common arrhythmia with significant symptomatic burden and risk of thrombo-embolic events.
Effective management strategies for right atrial flutter are crucial for improving patient outcomes.
Radiofrequency catheter ablation has emerged as a primary therapeutic option for various atrial arrhythmias.

Purpose:

To evaluate the efficacy and safety of radiofrequency catheter ablation for right atrial flutter.
To assess the outcomes of cavo-tricuspid isthmus ablation in a cohort of patients.
To determine the first-line success rate and recurrence of right atrial flutter post-ablation.

Summary:

A study involving 28 patients with right atrial flutter focused on cavo-tricuspid isthmus ablation using radiofrequency energy.
The primary endpoint was complete bidirectional isthmus block, achieved with a 96% first-line success rate.
The procedure demonstrated a low early recurrence rate of 4% and no observed complications, with a mean radiofrequency application time of 652 seconds.

Impact:

The findings support radiofrequency catheter ablation as a highly successful treatment for right atrial flutter.
This study encourages the integration of advanced ablation techniques into routine cardiac care within general hospitals.
Successful ablation contributes to maintaining sinus rhythm and improving the quality of life for patients with atrial flutter.