Search results for "equipment and supplies"
showing 10 items of 483 documents
The influence of NiTi alloy on the cyclic fatigue resistance of endodontic files
2020
Background: The aim of this study was to analyze the influence of NiTi alloy in endodontic rotary instruments on cyclic fatigue resistance. Methods: One hundred and sixty-four (164) sterile endodontic rotary files were selected and distributed into the following study groups: A: 25.08 F2 ProTaper Universal (PTU) (n = 41)
Sirolimus-Induced Vascular Dysfunction
2008
Objectives This study sought to analyze mechanisms that mediate vascular dysfunction induced by sirolimus. Background Despite excellent antirestenotic capacity, sirolimus-eluting stents have been found to trigger coronary endothelial dysfunction and impaired re-endothelialization. Methods To mimic the continuous sirolimus exposure of a stented vessel, Wistar rats underwent drug infusion with an osmotic pump for 7 days. Results Sirolimus treatment caused a marked degree of endothelial dysfunction as well as a desensitization of the vasculature to the endothelium-independent vasodilator nitroglycerin. Also, sirolimus stimulated intense transmural superoxide formation as detected by dihydroeth…
Safety and efficacy of biodegradable polymer-coated thin strut sirolimus-eluting stent vs. durable polymer-coated everolimus-eluting stent in patient…
2018
Introduction The biodegradable polymer drug-eluting stents were developed to improve vascular healing. However, further data are needed to confirm the safety and efficacy of these stents in patients with acute myocardial infarction (AMI). Aim We sought to determine the 1-year clinical follow-up in patients with AMI treated with a thin strut biodegradable polymer-coated sirolimus-eluting stent (BP-SES) versus a durable coating everolimus-eluting stent (DP-EES). Material and methods We analyzed patients with AMI (STEMI and NSTEMI) treated with either a BP-SES (ALEX, Balton, Poland, n = 886) or DP-EES (XIENCE, Abbott, USA, n = 1054) with available 1-year clinical follow-up using propensity sco…
TCT-664 Twelve-Month Clinical Outcomes Comparing Biodegradable Polymer Sirolimus-Eluting Stent Versus Durable Polymer Everolimus-Eluting Coronary Ste…
2018
The aim of this study is to compare the safety and efficacy of the biodegradable polymer coated sirolimus-eluting coronary stent (SES, BioMime™, Meril Life Sciences, India) with durable polymer coated everolimus-eluting coronary stent (EES, XIENCE family, Abbott Vascular, California, USA) in de
TCT-441 Optical Coherence Tomography assessment of the implantation of Everolimus-Eluting Bioresorbable Scaffolds against angiographic assessment: th…
2016
Bioresorbable Vascular Scaffolds (BVS) are the newest generation of stents for use during Percutaneous Coronary Intervention. However, as history has demonstrated, each development in stent technology has been associated with its own specific complications. With BVS, there are reports that recoil is
The Revolution in Heart Valve Therapy: Focus on Novel Imaging Techniques in Intra-Procedural Guidance
2021
Transcatheter valvular interventions have undergone significant progress over the last years with novel treatment options in even complex valvular conditions. In conjunction with this development, ...
In-Stent Restenosis: Definition, Entity of the Problem, Etiopathogenesis and Treatment Options
2018
In-stent restenosis (ISR) still represents a frequent limitation of percutaneous coronary intervention despite the introduction of latest-generation drug-eluting stents (DES), drastically lowering the overall incidence of ISR. Thus, the treatment of DES ISR remains a real brainteaser for interventional cardiologists.
Optical quality of intraocular lenses after several years in the human eye
2013
The optical quality of explanted intraocular lenses (IOLs) was analysed to verify if their quality is maintained after having been in the human eye for several years. Twenty-five explanted IOLs were studied, 10 because of intraocular luxation and 15 from corneal donors. The dioptric power and modulation transfer function (MTF) were determined to discover the image quality of the IOLs. The spectral transmission was also established to ascertain whether the filter against ultraviolet (UV) radiation was still effective. The results show that the MTF of implanted IOLs is maintained and therefore so is the image quality they provide. Only decay in the MTF of some of the explanted IOLs was observ…
Endovascular Treatment of Superficial Femoral and Proximal Popliteal Arteries Lesions
2019
Abstract Mechanical stress due to flexion-extension in the femoropopliteal space may cause stent failure via stent fracture and thrombosis. Wire-Interwoven self-expanding Nitinol Stents design partially mimics the reticular structure of native vessels, emphasizing radial strength, flexibility and kink resistance; these stent features can offer more chances for short and long term patency. We have evaluated 5 patients with peripheral artery disease with significant superficial femoral artery or proximal popliteal artery lesions. All patients underwent endovascular therapy with Wire-Interwoven self-expanding Nitinol Stents, with primary focus on stent patency at follow-up visits (1, 6, 12 mon…
Analgesic and physiological effects in conscious sedation with different nitrous oxide concentrations
2015
Objectives: to study the physiological changes, as well as the psychosedative and analgesic effects of nitrous oxide, in experimental conditions. Study Design: 101 dental students volunteers participated in a single nitrous oxide sedation session without dental treatment. Signs and symptoms were registered during and after the procedure. Pulse rate and hemoglobin oxygen saturation were monitored at: 100 per cent O 2 , 30 per cent N 2 O, 50 per cent N 2 O and 5 minutes after 100 per cent O 2 . A Likert scale was used to evaluate pain perception. The analgesic effects of nitrous oxide were evaluated at: 30 per cent N 2 O, 50 per cent N 2 O, and five minutes postoperatively. Results: Pulse rat…