View clinical trials related to De Novo Stenosis.
Filter by:Coronary restenosis has been one of the main reasons affecting the prognosis of patients with coronary artery disease (CAD) after percutaneous coronary intervention (PCI). With drug-eluting stents (DES), which elutes an antiproliferative drug to the vessel wall and reduces the restenosis rate; however, the incidence of restenosis is still about 10%. The late stent thrombosis and restenosis, with a hazard of nearly 2% per year after implantation, remained a concern and motivated the development of drug-coated balloons (DCB). DCB angioplasty has the following advantages compared with DES implantation: Firstly, the drug in DCB is uniformly distributed and released; whereas the drug release of DES via stent platform is uneven -85% of the vascular wall is not covered by the stent strut. Secondly, there is no alloy in the vessel after DCB angioplasty, while the coronary stent platform and polymer might cause temporal or persistent inflammatory response leading to intimal hyperplasia. Finally, there is no metal cage restraining vessel motion after DCB, the physiological function of coronary arteries would be maintained. Studies with the strategy of DCB angioplasty with bailout stenting have demonstrated safety and efficacy for the small-vessel disease. The application of DCB in large vessels with de novo lesions is still to be investigated. The DEBUT study showed that in high bleeding risk patients aimed using only 1-month DAPT, DCB was superior to BMS in terms of MACE [MACE (cardiovascular mortality, nonfatal myocardial infarction or revascularization of ischemia-reperfusion target lesions)] at 9-month follow-up. However, there is still a lack of evidence comparing the DCB versus DES in large vessels with de novo lesions. The current study aims to investigate if in patients undergoing PCI for de novo stenoses in large vessels, DCB is non-inferior to DES.
The DCB-ACS trial is a prospective, multi-center, non-inferiority, randomized controlled trail. The purpose of this trial is to evaluate the safety and efficacy of drug-coated balloon(DCB) in de novo lesions for acute coronary syndromes (ACS) .
The introduction of Bare-metal stents (BMS) since 1986 has alleviated the limitations of plain old balloon angioplasty (POBA) related elastic recoil and flow-limiting dissections. Later on, higher restenosis rates due to exaggerated neointimal growth in BMS has led to the development of drug-eluting stents (DES), which elutes an antiproliferative drug to the vessel wall and reduce the restenosis rate. However, late stent thrombosis and restenosis, with a hazard of nearly 2% per year after implantation, remained a concern and motivated the development of drug-coated balloons (DCB). The advantages of DCB are that leaving no metal in the blood vessel and respect the vessel anatomy. Recently, studies with the strategy of DCB angioplasty with bailout stenting have demonstrated safety and efficacy for the small-vessel disease. In the BASKET-SMALL 2 trial, which compared SeQuent Please DCB with EES or Taxus DES in the vessels that have reference diameter<3mm, showed that at 12-month follow-up, DCB was non-inferior to DES (MACE [cardiac death, non-fatal myocardial infarction, and target-vessel revascularisation] rates: 8% vs. 9%). Although some small-scale RCT using surrogate endpoints have reported that no significant difference in MLD or late lumen loss between the two groups in large vessels, up to now, there is no large-scale RCT comparing the clinical outcomes of DCB versus DES in large vessels with de novo lesions. Therefore, the investigators hypothesized that in patients undergoing non-complex percutaneous coronary intervention (PCI) for de-novo stenoses, drug-coated balloon (DCB) is non-inferior to drug-eluting stents (DES).