OBJECTIVE To determine whether coil stents are as effective as tubular stents in improving coronary flow velocity reserve (CFVR) after stent deployment. METHODS Distal CFVR was measured with a 0. 014 inch Doppler guide wire before and after stenting in 33 patients. A coil stent was implanted in 16 patients and a tubular stent was used in 17 patients. Coronary flow velocity within the stent wa...

Together with biliary drainage, which is an appropriate procedure for unresectable biliary cancer, biliary stent placement is used to improve symptoms associated with jaundice. Owing to investigations comparing percutaneous transhepatic biliary drainage (PTBD), surgical drainage, and endoscopic drainage, many types of stents are now available that can be placed endoscopically. The stents used a...

Bioresorbable polymeric support devices (stents) are being developed in order to improve the biocompatibility and drug reservoir capacity of metal stents, as well as to offer a temporary alternative to permanent metallic stents. These temporary devices may be utilized for coronary, urethral, tracheal, and other applications. The present study focuses on the mechanical properties of bioresorbabl...

introduction: this study aimed to evaluate the effects of four-time inflation of the stent balloon at nominal pressure on optimal stent expansion in resistant lesions. materials and methods: this interventional study was conducted on 39 patients with coronary artery lesions, in whom zotarolimus-eluting stents (n=20), paclitaxel-eluting stents (n=11) and other stents (n=8) were deployed four tim...

BACKGROUND Neoatherosclerosis is an emerging phenomenon in which lipid-rich plaques (LRPs) develop within pre-existing stents. This study was undertaken to describe near-infrared spectroscopy (NIRS) and intravascular ultrasound findings in pre-existing stents and to compare NIRS findings in pre-existing stents, in which an increased lipid signal has been speculated to indicate neoatherosclerosi...

OBJECTIVE To compare the effectiveness and safety of three types of stents (sirolimus eluting, paclitaxel eluting, and bare metal) in people with and without diabetes mellitus. DESIGN Collaborative network meta-analysis. DATA SOURCES Electronic databases (Medline, Embase, the Cochrane Central Register of Controlled Trials), relevant websites, reference lists, conference abstracts, reviews, ...

INTRODUCTION The limitations of traditional ureteral stents in patients with deficiencies in ureteral drainage have resulted in frequent stent exchanges. The implementation of metallic stents was introduced to improve the patency rates of patients with chronic upper urinary tract obstruction, obviating the need for frequent stent exchanges. We report our clinical experiences with the use of met...

conclusions regarding the efficacy outcomes of the patients after des implantation, no differences were found between shorter (≤ 6 months) and longer (≥ 12 months) duration of dapt. what is worse is that longer duration (≥ 12 months) was associated with increased risk of bleeding complications. evidence acquisition this study was conducted at the department of cardiology, the first college of c...

background a gunshot wound to the lower extremity with combined skeletal and vascular injuries can be difficult to manage. in clinical practice, it is not always possible to assemble a multispecialty team to work seamlessly to attain this goal, and the end result may be unnecessary prolonged ischemic time. a covered endovascular stent (evs) can be used initially to restore perfusion without nee...

background: optimal timing and mode of treatment for patients with coarctation of the aorta ( coa ) remain controversial, particularly in children. surgery, balloon dilatation, and stent implantation have all proven effective in the treatment of moderate or severe obstruction. the aim of this study was to investigate the complications of coa stenting angioplasty in pediatric patients. methods: ...