- ICH GCP
- Register voor klinische proeven in de VS.
- Klinische proef NCT07573579
Dynamic Voltage Mapping to Personalise the Ventricular Tachycardia Substrate (DYNAMITE-VT)
Ventricular tachycardia (VT) is a life-threatening heart rhythm disorder and one of the commonest causes of heart-related sudden death. It often affects people who have had a heart attack or other structural heart damage. VT occurs when abnormal electrical circuits develop within and around scar tissue in the heart.
People at risk are usually offered an implantable cardiac defibrillator (ICD), a device that can detect VT and deliver a lifesaving shock. While effective, these shocks can be sudden, painful and distressing. Medications such as amiodarone can also help, but they are often unsuitable for long-term use due to their potential side effects on the liver, lungs and thyroid gland.
An alternative is catheter ablation. Thin tubes (catheters) are threaded from a blood vessel in the groin to the heart, allowing the cardiologist to identify scar tissue and abnormal electrical circuits, which can be destroyed using heat, freezing or electrical energy.
Although ablation can help many patients, VT can return in up to one in three people after the procedure. This is because it can be difficult to precisely identify the scar and surrounding tissue that sustain the abnormal circuits, making it challenging to know exactly where to apply ablation treatment.
Dynamic Voltage Mapping, is a technique which the investigators believe can more accurately identify scar and the critical bordering tissue during ablation. Initial data collected suggests that the approach accurately predicts the VT circuit and helps guide ablation.
In this study, the investigators wish to recruit 40 participants undergoing VT ablation to determine how effective Dynamic Voltage Mapping is in real-world procedures.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Studietype
Inschrijving (Geschat)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
-
-
-
Liverpool, Verenigd Koninkrijk, L14 3PE
- Liverpool Heart and Chest Hospital NHS Foundation Trust
-
Contact:
- Vishal Luther, MRCP PhD ECES ECDS
- Telefoonnummer: 0151 600 1251
- E-mail: vishal.luther@lhch.nhs.uk
-
Contact:
- Justin Chiong, MBChB MSc MRCP
- E-mail: justin.chiong@lhch.nhs.uk
-
Hoofdonderzoeker:
- Vishal Luther, MRCP PhD ECES ECDS
-
Onderonderzoeker:
- Justin Chiong, MBChB MSc MRCP
-
-
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- Scheduled for clinically indicated VT ablation (due to sustained VT episodes or ICD therapies).
- Willing and able to give informed consent for participation in the trial
- Male or female aged between 18-85
- Ischaemic and non-ischaemic cardiomyopathy
- ICD insitu
Exclusion Criteria:
- Unable or unwilling to consent
- NYHA Class IV (end stage heart failure)
- Metastatic cancer
- End stage renal disease
- Pregnant or breast feeding
- Severe frailty
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: Dynamic Voltage Mapping Guided Ablation
Patients assigned to this group will have Dynamic Voltage Maps available for the operator to view during the procedure to help guide ablation.
|
Dynamic Voltage Mapping uses electrical information collected from catheters positioned within the heart to create an individualised map of the heart, which the investigators hypothesise will better identify scar and surrounding tissue responsible for ventricular tachycardia.
Andere namen:
|
|
Actieve vergelijker: Standard of Care Ablation
Patients assigned to this group will receive standard of care ablation, and operators will be blinded to Dynamic Voltage Maps created during the procedure.
|
Standard catheter ablation of ventricular tachycardia, guided by operator preference
Andere namen:
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Study Feasibility
Tijdsspanne: From enrolment to end of follow up (1 year after procedure)
|
|
From enrolment to end of follow up (1 year after procedure)
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Procedural Time
Tijdsspanne: From start of procedure to end (skin-to-skin)
|
Measured in minutes
|
From start of procedure to end (skin-to-skin)
|
|
Ablation time/number of lesions
Tijdsspanne: From start of procedure to end (skin-to-skin)
|
Measured by number of ablation lesions applied
|
From start of procedure to end (skin-to-skin)
|
|
Acute VT non-inducibility
Tijdsspanne: From start of procedure to end (skin-to-skin)
|
Ability to induce clinical VT at the end of the procedure
|
From start of procedure to end (skin-to-skin)
|
|
VT recurrence Rate
Tijdsspanne: From end of procedure to end of follow up (12 months)
|
Number of sustained VT episodes/ICD shocks/therapies following procedure, recorded by implanted cardiac device
|
From end of procedure to end of follow up (12 months)
|
Medewerkers en onderzoekers
Publicaties en nuttige links
Algemene publicaties
- Grade Santos J, Mills MT, Calvert P, Worthington N, Phenton C, Modi S, Ashrafi R, Todd D, Waktare J, Mahida S, Gupta D, Luther V. Delineating postinfarct ventricular tachycardia substrate with dynamic voltage mapping in areas of omnipolar vector disarray. Heart Rhythm O2. 2024 Feb 27;5(4):224-233. doi: 10.1016/j.hroo.2024.02.006. eCollection 2024 Apr.
- Khanra D, Calvert P, Hughes S, Waktare J, Modi S, Hall M, Todd D, Mahida S, Gupta D, Luther V. An approach to help differentiate postinfarct scar from borderzone tissue using Ripple Mapping during ventricular tachycardia ablation. J Cardiovasc Electrophysiol. 2023 Mar;34(3):664-672. doi: 10.1111/jce.15766. Epub 2023 Jan 12.
- Mills MT, Calvert P, Chiong J, Gupta D, Luther V. Dynamic Voltage Mapping of the Post-infarct Ventricular Tachycardia Substrate: A Practical Technique to Help Differentiate Scar from Borderzone Tissue. Arrhythm Electrophysiol Rev. 2024 Oct 14;13:e16. doi: 10.15420/aer.2024.26. eCollection 2024.
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
- Ziekte van het hartgeleidingssysteem
- Hart-en vaatziekten
- Pathologische processen
- Hartziekten
- Aritmieën, hart
- Tachycardie
- Pathologische aandoeningen, tekenen en symptomen
- Tachycardie, ventriculair
- Therapeutica
- Chirurgische procedures, operatief
- Ablatietechnieken
- Radiofrequente ablatie
- Radiofrequentietherapie
- Katheterablatie
Andere studie-ID-nummers
- 35371
- FS/CRTF/25/24865 (Ander subsidie-/financieringsnummer: British Heart Foundation)
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Beschrijving IPD-plan
IPD-tijdsbestek voor delen
IPD-toegangscriteria voor delen
IPD delen Ondersteunend informatietype
- LEERPROTOCOOL
- SAP
- ANALYTIC_CODE
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .