Implantation of the Venus P-Valve™ in the Pulmonic Position in Patients With Native Outflow Tracts
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 入组人数
- 84
- 主要终点
- Hemodynamic Performance of Venus P-Valve™ measured as the mean transvalvular pressure (mmHg)
研究概览
简要总结
A prospective, non-randomized multi-center clinical investigation of the Venus P-Valve™ for the treatment of pulmonary regurgitation with or without stenosis in patient with native outflow tracts.
详细描述
This study evaluates the implantation of the Venus P-Valve™ for the treatment of patients with an incompetent pulmonic valve, which causes blood to flow back from the pulmonary artery into the right heart ventricle during pumping of the heart (pulmonary regurgitation). Patients with and without narrowing (stenosis) of the right ventricular outflow tract will be included. The purpose of this protocol is to assess the safety and performance of Venus P-Valve™ implantation.
Post-procedure, a clinical visit will be scheduled at 30 days, 6 month, 12 months, and annually thereafter to 3 years. Population: Patients≥12 years with a body weight of ≥30kg, with significant pulmonary regurgitation (≥3+) with or without right ventricular outflow tract (RVOT) stenosis (mean Doppler gradient ≥35mmHg) with native right ventricular outflow tracts.
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
- 12 Years 至 70 Years（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Candidates for this study must meet all of the following Inclusion criteria:
- •Age: range from 12-70 years of age
- •Weight must be "equal to" or exceed 30 kilograms
- •Subject presents with evidence of moderate or severe (≥3+) pulmonary regurgitation by TTE
- •Subject presents with >30% pulmonary regurgitation fraction as defined by cardiac MRI
- •Subject is symptomatic from his/her pulmonary regurgitation or meets MRI criteria for intervention: right ventricular ejection fraction (RVEF) < 45%, pulmonary regurgitant fraction (PRRF) >30% and increased right ventricular end-diastolic volume (RVEDV) >150ml/m2
- •Subject will comply with specified follow-up evaluations, including echocardiograms and MRI
- •The subject or the subject's legal representative has been informed of the nature of the study, agrees to its provisions and has provided written informed consent as approved by the ethics committee and regulatory authority if applicable of the respective clinical site
- •The subject and the treating physician agree that the subject will return for all required post-procedure follow up visits
- •Catheterization is determined to be feasible by the treating physician
排除标准
- •Candidates will be excluded from the study if any of the following conditions are present:
- •Active infection requiring current antibiotic therapy (if temporary illness, subject may be a candidate 4 weeks after discontinuation of antibiotics)
- •Severe chest wall deformity
- •Leukopenia (WBC<3000 mm3)
- •Acute or chronic anemia (Hb <90g/l)
- •Platelet count <100,000 cells/mm3
- •In the judgment of the investigator, percutaneous introduction and delivery of the valve is not feasible
- •Need for emergency cardiac or vascular surgery, including pulmonary embolectomy, for any reason
- •Echocardiographic evidence of intracardiac mass, thrombus or vegetation.
- •History of, or active, endocarditis, unless the endocarditis has been treated >6 months previous to the procedure
- •History of or current intravenous drug abuse
- •A known hypersensitivity to aspirin or heparin
- •Currently participating in an investigational drug or another device study [Note: Trials requiring extended follow up for products that were investigational, but have since become commercially available, are not considered investigational devices.]
- •Major or progressive non-cardiac disease resulting in a life expectancy of <1yr
- •Obstruction of the central veins preventing advancement of the pulmonary bioprosthesis delivery system to the heart
- •Positive urine or serum pregnancy test in female subjects of child-bearing potential
- •Ileofemoral vessel characteristics that would preclude safe placement of 19 French (F), 22 F and 24 F introducer sheath
- •Contraindication for cardiac magnetic resonance imaging or inability to cooperate with a cardiac magnetic resonance imaging exam
- •Need for concomitant interventional procedures
结局指标
主要结局
Hemodynamic Performance of Venus P-Valve™ measured as the mean transvalvular pressure (mmHg)
时间窗: 1 month
Hemodynamic performance, measured as the mean transvalvular pressure gradient measured by transthoracic echocardiogram at month-1
Performance of Venus P-Valve™ measured as percentage of subjects with structural valve deterioration
时间窗: month 6
Structural valve deterioration assessment includes stent fracture, leaflet mobility, thickening and calcification
Safety of Venus P-Valve™ measured as probability of Major Adverse Cardiac and Cerebro-vascular Event (MACCE)
时间窗: month 1 follow-up
Occurrence of MACCE (defined as death, myocardial infarction, reoperation, vascular injury resulting in the need for an unplanned vascular grafting intervention, stroke, and pulmonary embolism) calculated as freedom-from-MACCE probability at month-1, calculated using the Kaplan Meier method
Performance of Venus P-Valve™ measured as change of pulmonary regurgitation (regurgitation classification by transthoracic echocardiogram)
时间窗: baseline, day 1, month 1, 6, 12 and annually thereafter to 3 years post procedure
Improvement or abolition of pulmonary regurgitation assessed by transthoracic echocardiogram at baseline, day 1, month 1, 6, 12 and annually thereafter to 3 years post procedure, with grading of pulmonary stenosis defined as: mild \<2, moderate: 2-4; severe \>4
Safety of Venus P-Valve™ measured as probability of death/reoperation
时间窗: month 12 follow-up
Occurrence of death or reoperation (Valve and/or procedure related) calculated as a composite freedom-of-death and -reoperation probability at 12 months. The acceptance criterion for mortality and reoperation is 16% (or equivalently 84% freedom from death and reoperation). If the lower 95% confidence limit for survival and freedom from reoperation at 12 months is greater than 84%, the acceptance criterion for safety will have been met.
Performance of Venus P-Valve™ measured as Success rate of valve placement and implantation
时间窗: up to 30 days
The device success is defined as the percentage of subjects with successful implant of the P-Valve assessed at the earliest evaluable echocardiogram. Linearized rates will be presented.
Performance of Venus P-Valve™ measured as change of pulmonary regurgitation (regurgitation classification by MRI)
时间窗: baseline and month 6
Improvement or abolition of pulmonary regurgitation assessed by MRI at baseline and month 6, with grading of pulmonary stenosis defined as: mild \<2, moderate: 2-4; severe \>4
次要结局
- Functional improvement measured as decreased pulmonary regurgitation (regurgitation classification by transthoracic echocardiogram )(1 month)
- Functional improvement measured as decreased pulmonary regurgitation (regurgitation classification by MRI)(month 6)
- Safety measured as percentage of subjects experiencing serious adverse events(up to third year of follow-up)