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,…
EuroPCR 2018 | BIO-RESORT: Polymer vs. Bioresorbable Polymer; Have We Reached a Plateau with DES?
This study randomized 3514 patients to a thin-strut biodegradable polymer everolimus-eluting stent (SYNERGY) vs. a sirolimus-eluting stent (ORSIRO) vs. a durable polymer zotarolimus-eluting stent (RESOLUTE INTEGRITY). The combined endpoint, the rate of target vessel failure, was similar for all three devices (8.3% for the zotarolimos-eluting stent, 6.8% for the everolimus-eluting stent, and 6.6% for the sirolimus-eluting…
Silent Diabetes Is the New Stealthy Enemy
One in three “nondiabetic” patients who undergo angioplasty with current drug-eluting stents have an altered glucose metabolism, which is associated with a 4-fold higher risk of events, according to a study that will be published soon in JACC Intv. One in three patients is definitely one patient too many, and four times higher is definitely…
Pharmacological balloons in femoropopliteal territory passed time testing
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…
Complex PCI: DAPT defining factor?
Courtesy of Dr. Alejandro Lakowsky, MTSAC. The Journal of the American College of Cardiology (JACC) has recently published a study on the role of coronary anatomy and PCI technical difficulty in the cost benefit ratio of prolonged vs. short post procedural DAPT. This study was carried out by Robert Yeh, Laura Mauri and the DAPT trial…
TCT 2017 | SENIOR: DES with a Bioresorbable Polymer and Short Dual Antiplatelet Therapy in Elderly Patients
Courtesy of the SBHCI. This study sought to assess the safety and efficacy of an everolimus-eluting stent with a biodegradable polymer (SYNERGY II) vs. a conventional stent (REBEL) in patients >75 years old with short duration of dual antiplatelet therapy. Before randomization, investigators recorded the planned duration of dual antiplatelet therapy (1 month for stable patients and 6 months…
DARE: Drug-Coated Balloons Compete with DES for the Treatment of In-Stent Restenosis
Courtesy of the Brazilian Society of Hemodynamics and Interventional Cardiology (SBHCI). The SeQuent Please paclitaxel-coated balloon provides non-inferior angiographic results when compared with the Xience everolimus-eluting stent for the treatment of in-stent restenosis. At 6 months, the minimal lumen diameter was 1.71 mm in the drug-coated balloon arm and 1.74 mm in the Xience arm, a difference that…
2.0-mm DES for Very Small Vessels: Are They Viable?
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…
Polymer-Free DES Also Show Efficacy in Anticoagulated Patients with High Risk for Bleeding
Patients who receive chronic anticoagulation therapy and then undergo angioplasty are frequently discharged on a triple anti-thrombotic scheme that usually includes aspirin, clopidogrel, and warfarin. The optimal duration of this indication remains unclear, particularly for patients at high bleeding risk. According to expert consensus, patients receiving chronic anticoagulation may receive from 1 to 12 months of dual…
Dual antiplatelet therapy discontinuation causes more thrombotic events at 12 months
Several randomized studies have shown that dual antiplatelet therapy (DAPT) is as effective to prevent thrombotic events in the segment treated with PCI, as it is with the rest of the coronary segments. This is very clear. The problem is there are a series of adverse events following P2Y12 inhibitor discontinuation. This phenomenon called rebound effect, happens…