Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
NA
20 participants
INTERVENTIONAL
2013-11-30
Brief Summary
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VT is where the lower chambers (ventricles) of your heart beat fast and this condition can be life-threatening. An ablation procedure is performed in patients who have VT despite the best treatment available with tablets.
Cardiac ablation involves interrupting the abnormal electrical signals, which cause VT, by applying a type of electrical energy through a catheter. An important part of the ablation procedure is the identification of the exact part of the heart muscle responsible for causing the VT. This typically involves sampling the electrical signals in lots of different areas of the heart, which allows the construction of computer generated 3 dimensional pictures of the structure and the electrical circuits inside the ventricle. Recent research has identified a new method to interpret these electrical signals (called Fibrillatory Factor - FF), which may allow better identification of the area within the ventricle that should be ablated.
A standard VT ablation will often involve us controlling the heart-beat by pacing the heart through 1 of the investigators catheters within the heart. The electrical response to pacing at different heart rates can often provide your doctor with information to help the ablation. This study will involve an additional period of pacing at different heart rates, during which the electrical response is measured in different areas around the ventricle. This will allow us to calculate areas of the ventricle, which the investigators new measure FF would predict to be the source of the VT. In the future this may then allow us to better identify patients who are at risk of VT, and to better locate the area that needs to be ablated.
Detailed Description
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Conditions
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Keywords
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Study Design
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NA
SINGLE_GROUP
DIAGNOSTIC
NONE
Study Groups
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Ventricular Tachycardia (VT)
Patients with VT will undergo a clinically indicated ablation of their VT
Fibrillatory Factor calculation (FF)
During sinus rhythm these patients will undergo a simple pacing protocol to allow us to calculate FF, which is an area we would predict is mod likely to be the origin of their VT.
Interventions
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Fibrillatory Factor calculation (FF)
During sinus rhythm these patients will undergo a simple pacing protocol to allow us to calculate FF, which is an area we would predict is mod likely to be the origin of their VT.
Eligibility Criteria
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Inclusion Criteria
* Scheduled for a clinically indicated cardiac ablation for the treatment of ventricular tachycardia
Exclusion Criteria
* Active infection
* Presence of thrombus, cardiac tumour, interatrial Baffle patch (a specific form of congenital cardiac surgery) or prior septal occluder device
* Subjects who cannot be anticoagulated of infused with heparinized saline
* A history of heparin induced thrombocytopenia
* Pregnant or actively breast feeding
18 Years
ALL
No
Sponsors
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Guy's and St Thomas' NHS Foundation Trust
OTHER
Responsible Party
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Jaswinder Gill, M.D.
Consultant Electrophysiologist and Professor of Cardiology
Principal Investigators
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Jaswinder Gill, MD
Role: PRINCIPAL_INVESTIGATOR
Guy's and St Thomas' NHS Foundation Trust
Locations
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Guys and St Thomas' NHS Trust
London, , United Kingdom
Countries
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Central Contacts
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Other Identifiers
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GSTT-FF-1
Identifier Type: -
Identifier Source: org_study_id