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Magnetically Navigated vs. Manually Guided Radiofrequency in Atrioventricular-Node-Reentry-Tachycardia

2014-07-24 14:13:47 | BioPortfolio

Summary

The MAGMA-AVNRT study compares two different methods of handling the ablation catheters for av-node-reentry-tachycardia with regard to x-ray dose, safety and success: manually guided vs magnetically navigated RF-catheter.

Description

AV-node reentry tachycardia can be treated by radiofrequency ablation or modulation of the slow pathway of the av node. The success rate is 90 to 95%.

There are different options to navigate the ablation catheter: manually guided vs magnetically guided.

For magnetic guidance two magnets are positioned beneath the patient. A mangetic field is induced and a catheter with a ferromagnetic tip can be navigated from outside with a joystick by modifying the vectors of the magnetic field.

We hypothesized that a magnetic guidance of the RF-ablation catheter results in lower x-ray time and dose for the patient and the physician with comparable safety und success rates.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Atrioventricular Nodal Reentry Tachycardia

Intervention

RF-ablation

Location

University Hospital Bergen
Bergen
Norway
5021

Status

Recruiting

Source

Deutsches Herzzentrum Muenchen

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-07-24T14:13:47-0400

Clinical Trials [1123 Associated Clinical Trials listed on BioPortfolio]

European Multicenter Study Radiofrequency (RF) Versus Cryo in Atrioventricular Nodal Reentry Tachycardia (AVNRT)

In this randomized study, two energy sources for the ablation of AV nodal reentry tachycardia are compared: The standard technique of radiofrequency energy delivery is compared with the n...

Study on Left Atrial Function of Paroxysmal Supraventricular Tachycardia After Radiofrequency Ablation

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Cryoablation of the Retrograde Fast Pathway as Treatment for AVNRT

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Treatment Study of AV Node Reentry Tachycardia

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PubMed Articles [1232 Associated PubMed Articles listed on BioPortfolio]

Symptomatic arrhythmias after catheter ablation of atrioventricular nodal reentrant tachycardia (AVNRT): results from the German Ablation Registry.

In atrioventricular nodal reentrant tachycardia (AVNRT), catheter ablation is considered as first-line therapy. Despite high success rates, some patients present with arrhythmia recurrence or develop ...

Atypical Slow-Slow Atrioventricular Nodal Reentrant Tachycardia with Use of a Superior Slow Pathway.

We report a case of atypical slow-slow atrioventricular nodal reentrant tachycardia (AVNRT) utilizing a superior slow pathway as a retrograde limb. The standard electrophysiological criteria confirm t...

Ventricular-triggered atrial pacing: a new maneuver for slow-fast atrioventricular nodal reentrant tachycardia.

Atrioventricular (AV) node duality is suggested by several electrophysiological findings, none of which are strong predictors of AV nodal reentrant tachycardia (AVNRT).

A case of a "pseudo jump-up phenomenon" caused by retrograde ventricular-His prolongation.

A 35-year-old woman was referred for treatment of a supraventricular tachycardia. The tachycardia was diagnosed as a slow-fast form of atrioventricular nodal reentrant tachycardia. Radiofrequency abla...

Successful cryoablation of dual atrioventricular nodal non-reentrant tachycardia: first reported cases.

We describe two consecutive adult males with incessant dual AV nodal non-re-entrant tachycardia and associated severe cardiomyopathy. After invasive diagnosis, this is the first published report showi...

Medical and Biotech [MESH] Definitions

Abnormally rapid heartbeats caused by reentry of atrial impulse into the dual (fast and slow) pathways of ATRIOVENTRICULAR NODE. The common type involves a blocked atrial impulse in the slow pathway which reenters the fast pathway in a retrograde direction and simultaneously conducts to the atria and the ventricles leading to rapid HEART RATE of 150-250 beats per minute.

Abnormally rapid heartbeats caused by reentry circuit in or around the SINOATRIAL NODE. It is characterized by sudden onset and offset episodes of tachycardia with a HEART RATE of 100-150 beats per minute. The P wave is identical to the sinus P wave but with a longer PR interval.

A rare form of supraventricular tachycardia caused by automatic, not reentrant, conduction initiated from sites at the atrioventricular junction, but not the ATRIOVENTRICULAR NODE. It usually occurs during myocardial infarction, after heart surgery, or in digitalis intoxication with a HEART RATE ranging from 140 to 250 beats per minute.

Abnormally rapid heartbeats originating from one or more automatic foci (nonsinus pacemakers) in the HEART ATRIUM but away from the SINOATRIAL NODE. Unlike the reentry mechanism, automatic tachycardia speeds up and slows down gradually. The episode is characterized by a HEART RATE between 135 to less than 200 beats per minute and lasting 30 seconds or longer.

The founding member of the nodal signaling ligand family of proteins. Nodal protein was originally discovered in the region of the mouse embryo primitive streak referred to as HENSEN'S NODE. It is expressed asymmetrically on the left side in chordates and plays a critical role in the genesis of left-right asymmetry during vertebrate development.

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