Most drug-eluting stents are coated by a polymer that is used to contain the antiproliferative drug. Once the drug is released, the polymer remains in place and its presence has been associated with inflammation, restenosis, and neoatherosclerosis. The MiStent device features a polymer that becomes bioabsorbable once the drug has been released, which could, theoretically,...
The LEADERS FREE study showed that a biolimus A9-coated polymer-free stent was superior to a conventional stent in terms of safety and efficacy in patients who received dual antiplatelet therapy for only a month due to their high risk for bleeding. In this substudy, researchers analyzed 667 patients enrolled in the original LEADERS FREE trial who met certain requirements...
The study included 36292 consecutive patients undergoing acute myocardial infarction receiving PCI with the new generation stent SYNERGY (thin struts, bioresorbable polymer and everolimus eluting); 39.7% presented ST elevation MI. Kaplan-Meier curves at 2 years of patients receiving the SYNERGY vs patients receiving other drug eluting stents resulted very similar for thrombosis (0,69% vs 0,81%,...
The SCAAR registry aimed at showing the differences in mortality at very long term when using functional assessment of coronary lesions (with FFR or iFR) in patients with chronic stable angina. The study compared 3460 patients assessed with FFR/iFR against 21221 patients undergoing PCI based on angiography, between January 2005 and March 2015. As...
Using instantaneous wave-free ratio (iFR) to guide decisions on revascularization of intermediate lesions is cheaper than using fractional flow reserve (FFR). Based on costs from the DEFINE-FLAIR trial, researchers estimate the difference to be almost USD 1000. This should not be seen as good news for any given technology (iFR, in this case), but for physiologic...
Infrapopliteal (below the knee, BTK) percutaneous transluminal angioplasty (PTA) has been acknowledged as a useful strategy in chronic critical limb ischemia (CLI), but artery calcification severity results in considerable restenosis. Repeat PTA and the management of trophic lesions help with wound healing. However, this conduct has not been extensively assessed. This study enrolled 152 patients (175 limbs)...
Endovascular revascularization has become the main strategy for symptomatic patients with peripheral arterial disease in femoropopliteal territory. Conventional balloon angioplasty is effective in gaining lumen but has a restenosis rate to up 60% at 12 months. Implantation of conventional stents reduced restenosis to almost half, but presented problems such as thrombosis, stent fracture and difficulty...
Cardiac Artery Bypass Graft Surgery has been shown more effective than percutaneous coronary intervention (basically because it renders lower revascularization rate) in patients with severe left main bifurcation lesions receiving 1st generation drug eluting stents. This is why the 2014 American guidelines recommend CABG for most patients. But the EXCEL and the NOBLE trials brought back hope to...
Courtesy of SBHCI. According to a new quality of life sub-study, the “EXCEL”, both coronary artery bypass graft and left main PCI are associated with significant clinical improvement in terms of angina frequency, tolerance to exertion and treatment satisfaction. At 12 and 36 months, there were no significant differences between PCI and surgery after several quality of...
The reference vessel diameter is a fundamental factor for restenosis after coronary angioplasty even with drug-eluting stents. The smallest sized stents available are 2.25 mm in diameter, but even smaller vessels can be symptomatic. This was a prospective multicenter trial of the Resolute Onyx 2.0-mm zotarolimus-eluting stent. The primary endpoint was target lesion failure. Read also: “Effects...