NHLBI Transmural Electrosurgery LeafLet Traversal and Laceration Evaluation (TELLTALE) BASILICA-TAVR Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 90
- 试验地点
- 10
- 主要终点
- Number of Participant That Experienced Technical Success With the TELLTALE Guidewire System
研究概览
简要总结
Background:
Replacing a valve in the heart can save many people's lives. The procedure is called transcatheter aortic valve replacement (TAVR). In rare cases, a flap of tissue called a leaflet can shift during TAVR; the leaflet may block blood flow to the coronary arteries, which supply blood to the heart muscle. About 50% of people who experience this problem will die. To reduce this risk, doctors will cut this leaflet during TAVR. But the tools used to cut the leaflet were originally designed for other purposes. Using these tools during TAVR can be complicated and risky. Researchers want to make TAVR safer.
Objective:
To test a new device (TELLTALE) designed specifically for use during TAVR.
Eligibility:
People aged 21 years and older who are undergoing TAVR and who are at high risk of coronary artery obstruction.
Design:
Participants will be screened. They will have routine tests that are done before undergoing TAVR.
Before the procedure, participants will complete a questionnaire. They will talk about how their heart disease affects their quality of life. Their physical abilities and their risk of stroke will be assessed.
Participants will be admitted to the hospital for TAVR. They will be placed under general anesthesia or moderate sedation. The procedure will be performed using the TELLTALE guidewire system.
Participants will repeat the tests of their physical abilities after the procedure. They will also repeat the questionnaire about their quality of life. These will be repeated again at a follow-up visit in 30 days.
Participants will have a final study visit after 90 days. This visit may be in person or remote.
详细描述
Transcatheter aortic valve implantation (TAVR) may cause life threatening coronary artery obstruction, whether implanted in native aortic stenosis or bioprosthetic aortic valve failure.
We have developed and validated the techniques of BASILICA (Bioprosthetic Aortic Scallop Intentional Laceration to prevent Iatrogenic Coronary Artery obstruction during transcatheter aortic valve replacement), using bedside modification of off-the-shelf guidewires. These bedside modifications require additional assembly steps and special expertise, and thereby risks procedure failure and complications.
Transmural Systems and NHLBI have developed a purpose-built electrosurgical guidewire system (TELLTALE) to simplify the BASILICA-TAVR procedure. The purpose of this protocol is to test the efficacy and safety of this purpose-built guidewire in the setting of BASILICA-TAVR.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 21 Years 至 109 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •INCLUSION CRITERIA:
- •In order to be eligible to participate in the study, candidates must meet all of the following criteria:
- •Adults age >= 21 years
- •High or prohibitive risk of surgical aortic valve replacement according to the local multidisciplinary heart team
- •Undergoing TAVR for bioprosthetic aortic valve failure or native aortic stenosis ( on-label TAVR)
- •Local multidisciplinary heart team determines subject to be at high risk of TAVR-induced coronary artery obstruction
- •Deemed likely to suffer coronary artery obstruction from TAVR based on NHLBI Core lab analysis of CT, any of
- •Risk is narrow Sinus of Valsalva: (a) Leaflet height is greater than coronary artery height, and (b) Virtual transcatheter valve-to-coronary (VTC) distance < 4mm
- •Risk is Sinus sequestration: (a) Threatening leaflet height is greater than sinotubular junction, and (b) Virtual transcatheter valve-to-sinotubular-junction distance (VTS) < 2mm at the affected Sinus
- •Concurrence of the Study Eligibility Committee
- •Able to understand the protocol, consents in writing to participate, and willing to comply with all study procedures for the duration of the study
排除标准
- •Requires doppio (two-leaflet) BASILICA
- •Flail target leaflet at baseline
- •Excessive target aortic leaflet calcification (no basal calcium-free window or potentially obstructive calcific masses) on baseline CT
- •Planned provisional (pre-position coronary artery) stents despite BASILICA
- •Requires non-femoral access
- •Requires concomitant procedures during TAVR (such as percutaneous coronary intervention for baseline obstructive coronary artery disease)
- •Chronic kidney disease KDIGO stage 4 or 5 (eGFR < 29 ml/min/1.73m2) or renal replacement therapy
- •Not expected to survive for 12 months
- •Pregnant at the time of intended treatment (day 0)
研究组 & 干预措施
Participants undergoing TAVR with BASILICA using Transmural TELLTALE guidewire system
Participants with severe aortic stenosis or failure of surgically-implanted bioprosthetic valve undergoing transcatheter aortic valve replacement (TAVR) with bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction (BASILICA) using the Transmural TELLTALE guidewire system.
干预措施: TELLTALE BASILICA procedure (Device)
结局指标
主要结局
Number of Participant That Experienced Technical Success With the TELLTALE Guidewire System
时间窗: 1 minute following procedure discharge (Exit from the catheterization laboratory)
The primary efficacy endpoint is technical success, which is defined when the following criteria are all met: 1. Successful electrosurgical leaflet traversal using the TELLTALE Guidewire 2. Successful electrosurgical leaflet laceration using the TELLTALE Guidewire 3. Successful retrieval of the TELLTALE Guidewire System
Number of Inpatient Safety Events
时间窗: Upon discharge from the index hospital admission, up to 30 days
Inpatient safety as defined by: 1. Freedom from all-cause mortality as defined as the total number of deaths from any cause 2. Freedom from stroke, both disabling and non-disabling * Disabling stroke according to VARC-3 is defined as a stroke resulting in significant, persistent neurological deficits that impact a patient's ability to perform daily activities. * Non-disabling stroke according to VARC-3, involves stroke symptoms that don't significantly impair a patient's ability to perform daily activities or lead to a worsening of their pre-stroke disability level. 3. Freedom from acute coronary artery obstruction 4. Freedom from emergency cardiac surgery or reintervention related to the TELLTALE BASILICA procedure or device- 5. Freedom from BASILICA-related complications including coronary artery perforation, coronary artery dissection, aortic dissection, cardiac free wall perforation, or systemic embolization of a native or bioprosthetic leaflet
次要结局
- Freedom From Safety Events(Up to Day 30)