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Comparative Study of Guided Radiofrequency Ablation Using the CARTO® 3 and NavX™ Systems for the Treatment of Paroxysmal Atrial Fibrillation

2014-07-23 21:11:19 | BioPortfolio

Summary

The purpose of this study is to determine the change in average radiation exposure time and average procedure time following guided radiofrequency (RF) ablation among subjects undergoing treatment for paroxysmal atrial fibrillation with either the CARTO® 3 or the NavX(TM) System.

It is hypothesized that described features will reduce the average radiation exposure during the CARTO® 3 system-guided procedures compared to the NavX(TM) system-guided procedures.

Study Design

Observational Model: Case-Only, Time Perspective: Prospective

Conditions

Paroxysmal Atrial Fibrillation

Intervention

Cardiac Mapping

Location

Southlake Regional Healthcare Centre
Newmarket
Ontario
Canada
L3Y8C3

Status

Recruiting

Source

Biosense Webster, Inc.

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-07-23T21:11:19-0400

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Medical and Biotech [MESH] Definitions

Rapid, irregular atrial contractions caused by a block of electrical impulse conduction in the right atrium and a reentrant wave front traveling up the inter-atrial septum and down the right atrial free wall or vice versa. Unlike ATRIAL FIBRILLATION which is caused by abnormal impulse generation, typical atrial flutter is caused by abnormal impulse conduction. As in atrial fibrillation, patients with atrial flutter cannot effectively pump blood into the lower chambers of the heart (HEART VENTRICLES).

A potentially lethal cardiac arrhythmia that is characterized by uncoordinated extremely rapid firing of electrical impulses (400-600/min) in HEART VENTRICLES. Such asynchronous ventricular quivering or fibrillation prevents any effective cardiac output and results in unconsciousness (SYNCOPE). It is one of the major electrocardiographic patterns seen with CARDIAC ARREST.

Long-term changes in the electrophysiological parameters and/or anatomical structures of the HEART ATRIA that result from prolonged changes in atrial rate, often associated with ATRIAL FIBRILLATION or long periods of intense EXERCISE.

A cardiotonic glycoside obtained mainly from Digitalis lanata; it consists of three sugars and the aglycone DIGOXIGENIN. Digoxin has positive inotropic and negative chronotropic activity. It is used to control ventricular rate in ATRIAL FIBRILLATION and in the management of congestive heart failure with atrial fibrillation. Its use in congestive heart failure and sinus rhythm is less certain. The margin between toxic and therapeutic doses is small. (From Martindale, The Extra Pharmacopoeia, 30th ed, p666)

Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation.

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