View clinical trials related to Constriction, Pathologic.
Filter by:The investigators will retrospectively study lumbar spinal stenosis patients who underwent OLIF or MIS-TLIF with percutaneous pedicle screw fixation between January 2016 and December 2019.The investigators will measure estimated blood loss, operative time, hospital stay, cost, reoperation, and complication incidence, visual analogue scale (VAS), Oswestry Disability Index (ODI), Japanese Orthopaedic Association (JOA), and Short Form-36 (SF-36) scores, discal and foraminal height, lumbar lordotic angle, and fusion status.The investigators will conduct to evaluate postoperative improvements, complications, and reoperation rates between patients with lumbar spinal stenosis (LSS) undergoing oblique lateral interbody fusion (OLIF) or minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF).
Device: EluNIR Ridaforolimus Eluting Coronary Stent System - (hereafter referred to as EluNIR) 2.25 mm diameter (8 mm, 12 mm, 15 mm, 17 mm, 20 mm, 24 mm, 28 mm and 33 mm length) Objectives: To further assess the safety and efficacy of the small diameter (2.25 mm) Ridaforolimus Eluting Stent - EluNIR. Subject Population: Subjects who underwent PCI for angina (stable or unstable), silent ischemia (in absence of symptoms a visually estimated target lesion diameter stenosis of ≥70%, a positive non-invasive stress test, or FFR ≤0.80 must be present), NSTEMI, and recent STEMI (>24 hours from initial presentation and stable) with attempted implantation of a 2.25 mm diameter EluNIR stent. Trial Design and Methods: This is a prospective, multi-center, single-arm, open-label clinical trial. Clinical follow-up for all patients will be performed at 30 days 6 months, and 1 year after the procedure.
The overall goal of this study is to develop and validate a preference assessment tool for patients who have severe aortic stenosis and are contemplating their treatment options. The first part of the study focuses on understanding the treatment goals and treatment features that matter most to patients who have already made the decision. The investigators use mixed methods (nominal group technique, card sorting) to elicit, prioritize, and organize these patient preferences into a "cognitive map". Based on those findings, the investigators design a preference tool and then pre-test the tool with patients and healthcare providers.
To improve diagnostic methods for patients with laryngeal stenosis for the optimal determination of the technique of surgical treatment.
This study will assess and compare the levels of pain, discomfort, and functional impairments between rapid and slow maxillary expansion in treating skeletal maxillary constriction in the early adolescence period (i.e. between 12 and 16 years). The study sample will consist of 32 patients who suffer from a skeletal posterior crossbite. The sample will be allocated randomly into two groups: RME group and SME group. The patients will be asked to fill out the attached questionnaires at three assessment times.
This is the first head to head, prospective, randomized, double-blind clinical trial comparing two different approaches of balloon dilation (standard versus progressive dilation) for benign esophageal strictures. A retrospective study on patients with benign esophageal strictures that underwent balloon dilation using the proposed technique found considerable symptomatic improvement in dysphagia. The proposed balloon dilation method is a novel approach that will require fewer sessions of dilation and use fewer balloon dilation catheters to achieve a maximum balloon diameter of 18mm and result in a significant symptomatic improvement.
To compare supra-annular sizing and THV implantation technique (Hangzhou solution) versus annular sizing and THV implantation technique (control group) in bicuspid aortic stenosis (AS) patients undergoing transcatheter aortic valve replacement (TAVR) with self-expanding valves (SEVs): a randomized superiority trial
The purpose of this trial is to generate clinical evidence on valve safety and performance of self-expanding (SE) versus balloon-expandable (BE) transcatheter aortic valve replacement (TAVR) in subjects with a small aortic annulus and symptomatic severe native aortic stenosis. Additionally, a stress echocardiography sub-study will be conducted as part of the SMART Trial at select sites. The purpose of the sub-study is to evaluate performance of SE versus BE TAVR in subjects with a small aortic annulus and symptomatic severe native aortic stenosis after undergoing exercise stress echocardiographic testing.
Multicenter randomized controlled trial comparing endoscopic laser resection vs dilatation in benign tracheal stenosis.
Prospective, randomized-controlled trial comparing self-expandable metal stent versus ballon dialtation only for the endoscopic treatment of benign strictures related to Crohn´s disease.