Radiofrequency Ablation of Ectopic Atrial Tachycardia

Study Overview
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Brief Summary
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A retrospective chart review will be performed on 50 patients who received RFA for the treatment of EAT between August 1992 and August 2003 at Children's Healthcare of Atlanta. The use of the CARTO/Biosense catheter has improved outcomes with decreased radiation exposure to patients.

Detailed Description
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Ectopic Atrial Tachycardia (EAT) is a relatively rare arrhythmia in the pediatric population. It is defined by a run of more than 3 premature atrial contractions together. In EAT, the arrhythmia tends to increase in rate over a period of time and then slows down gradually to a normal rhythm. Ectopic Atrial Tachycardia (EAT) is mostly encountered in patients with structurally normal hearts however, occasionally physicians do observe this type of disorder in children following surgery for congenital heart defects. Current reports suggest that EAT occurs in approximately 1 in 10,000 children (Hamilton, 2002). Children with EAT usually present with a multitude of symptoms. The most common symptoms associated with pediatric EAT are palpitations, chest pain, lightheadedness, presyncope, and dyspnea. Other symptoms can include exercise intolerance and congestive heart failure. These are usually late manifestations. In the patients with tachycardia induced CM, the time of development of CM is dependent on the rate and duration of the tachycardia however, in most cases, dilation is present upon diagnosis. This CM can be reversed with successful treatment of the arrhythmia. The treatment for chronic EAT includes medications such as adenosine and for difficult to control cases, Radiofrequency Ablation (RFA). RF ablation has been successful in curing EAT, with success rates ranging from 75-100%. It has been shown that the complication rates are similar to other RF ablation procedures, with a higher risk of recurrence (Hamilton, 2002). At Children's Healthcare of Atlanta, the cardiac catheterization lab performs approximately 10 Radiofrequency ablations for EAT each year. The goal of this retrospective review is to assess the frequency of recurrence of the EAT among a subset of patients receiving treatment between August 1992 - August 2003

Official Title
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A Retrospective Review of Outcomes Related to Radiofrequency Ablation of Ectopic Atrial Tachycardia

Conditions
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Congenital Disorders

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 50 patients who received RFA for treatment of EAT between August 2992 and August 2003 Treatment at Children's Healthcare of Atlanta Exclusion Criteria: those who do not meet inclusion criteria

Ages Eligible for Study
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Maximum Age: 21 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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pediatric, cardiac, Radiofrequency Ablation, Ectopic Atrial Tachycardia