Influence of Calcium Pattern on Plaque Modification Achieved With Intracoronary Lithotripsy
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 96
- 试验地点
- 1
- 主要终点
- Percentage of lesions with Calcium Fractures
研究概览
简要总结
Calcified coronary artery disease is a frequently encountered problem that can lead to poorer outcomes for patients undergoing PCI. Recently, intravascular lithotripsy has become available for the treatment of callcified coronary artery disease. The effect of intravascular lithotripsy on varying calcium patterns has not been adequately explored.
This is an investigator initiated, open label, non-blinded, observational study involving a number of centers in Spain examining the effect of intravasuclar lithotripsy in varying calcium patterns. 100 patients wll be enrolled. Optical coherence tomography will be used to assess the effect of intravascular lithotripsy on varying calcium patterns (concentric, eccentric and nodular).
详细描述
Calcified coronary artery disease continues to present a challenge for Interventional Cardiologists. Moderate calcification is found in over 25% of coronary artery lesions planned for percutaneous coronary intervention (PCI). Outcomes for patients undergoing PCI to calcified lesions have been shown to be consistently poorer than in non-calcified lesions. Recently, intravascular lithotripsy has become available for the treatment of calcified coronary artery disease. The effect of intravascular lithotripsy on varying calcium patterns has not been adequately explored.
This is an investigator initiated, open label, non-blinded, observational study involving a number of centers in Spain. Patients with an indication of PCI and with a significant calcium burden requiring modification will be invited to participate. PCI procedures will be performed via either radial or femoral access as deemed appropriate by the operator and in accordance with local protocols. Intravascular imaging using OCT will be performed prior to calcium modification to define the pattern of calcium, after calcium modification to assess the effectiveness of IVL therapy and after stent implantation to assess stent expansion.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients >18 years of age
- •Patients with an indication for PCI (ischemic symptoms or evidence of myocardial ischemia (inducible or spontaneous) in the presence of >50% de novo severely calcified coronary stenosis that requires IVL treatment.
排除标准
- •Patients unwilling or unable to sign informed consent for the procedure
- •Patients with severe peripheral vascular disease limiting vascular access to the extent that it is unsafe to perform the procedure
- •Patients with severe renal dysfunction (eGFR <15mls/min and not receiving dialysis)
- •Treatment of vessels < 2.5mm diameter which are not amenable to IVL treatment or OCT assessment.
- •Treatment of lesions located very distally in the coronary vessel where the OCT catheter may not reach.
- •Inability to cross the lesion with the OCT catheter due to very severe stenosis or severe vessel tortuosity.
- •Ostial left main stem or right coronary artery lesions which may be difficult to visualise by OCT
- •Patients requiring concomitant use of rotational or orbital atherectomy of LASER.
结局指标
主要结局
Percentage of lesions with Calcium Fractures
时间窗: At the time of percutaneous coronary intervention
Percentage of lesions showing calcium modification (fractures) after intravascular lithotripsy (IVL) in nodular eccentric and concentric calcium patterns
次要结局
- Calcium modification in eccentric versus concentric calcium(At the time of percutaneous coronary intervention)
- Number of quadrants with calcium fractures(At the time of percutaneous coronary intervention)
- Number of calcium fractures(At the time of percutaneous coronary intervention)
- Stent expansion(At the time of percutaneous coronary intervention)
- Stent symmetry(At the time of percutaneous coronary intervention)
研究者
Nieves Gonzalo
Dr.
Fundacion Investigacion Interhospitalaria Cardiovascular