- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 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.
연구 개요
연구 유형
등록 (추정된)
단계
- 해당 없음
연락처 및 위치
연구 장소
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Liverpool, 영국, L14 3PE
- Liverpool Heart and Chest Hospital NHS Foundation Trust
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연락하다:
- Vishal Luther, MRCP PhD ECES ECDS
- 전화번호: 0151 600 1251
- 이메일: vishal.luther@lhch.nhs.uk
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연락하다:
- Justin Chiong, MBChB MSc MRCP
- 이메일: justin.chiong@lhch.nhs.uk
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수석 연구원:
- Vishal Luther, MRCP PhD ECES ECDS
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부수사관:
- Justin Chiong, MBChB MSc MRCP
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참여기준
자격 기준
공부할 수 있는 나이
- 성인
- 고령자
건강한 자원 봉사자를 받아들입니다
설명
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
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 없음(오픈 라벨)
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
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실험적: 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.
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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.
다른 이름들:
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활성 비교기: 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.
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Standard catheter ablation of ventricular tachycardia, guided by operator preference
다른 이름들:
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Study Feasibility
기간: From enrolment to end of follow up (1 year after procedure)
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From enrolment to end of follow up (1 year after procedure)
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Procedural Time
기간: From start of procedure to end (skin-to-skin)
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Measured in minutes
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From start of procedure to end (skin-to-skin)
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Ablation time/number of lesions
기간: From start of procedure to end (skin-to-skin)
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Measured by number of ablation lesions applied
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From start of procedure to end (skin-to-skin)
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Acute VT non-inducibility
기간: From start of procedure to end (skin-to-skin)
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Ability to induce clinical VT at the end of the procedure
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From start of procedure to end (skin-to-skin)
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VT recurrence Rate
기간: From end of procedure to end of follow up (12 months)
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Number of sustained VT episodes/ICD shocks/therapies following procedure, recorded by implanted cardiac device
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From end of procedure to end of follow up (12 months)
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공동 작업자 및 조사자
간행물 및 유용한 링크
일반 간행물
- 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.
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
기본 완료 (추정된)
연구 완료 (추정된)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
키워드
추가 관련 MeSH 약관
기타 연구 ID 번호
- 35371
- FS/CRTF/25/24865 (기타 보조금/기금 번호: British Heart Foundation)
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
IPD 계획 설명
IPD 공유 기간
IPD 공유 액세스 기준
IPD 공유 지원 정보 유형
- 연구_프로토콜
- 수액
- ANALYTIC_CODE
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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