View clinical trials related to Constriction, Pathologic.
Filter by:Background: Anastomotic stricture significantly impacts patients' quality of life and long-term prognosis. However, current clinical practice lacks accurate tools for predicting anastomotic stricture. This study aimed to develop a nomogram to predict anastomotic stricture in patients with rectal cancer who have undergone anterior resection. Methods: 1542 eligible patients will be recruited for the study. Least absolute shrinkage selection operator (Lasso) analysis will be used to preliminarily select predictors. A prediction model will be constructed using multivariate logistic regression and presented as a nomogram. The performance of the nomogram will be evaluated using receiver operating characteristic (ROC) curves, calibration diagrams, and decision curve analysis (DCA). Internal validation will be conducted by assessing the model's performance on a validation cohort.
The aim of this study was to compare the efficacy of caudal epidural steroid injection and caudal epidural pulsed radiofrequency stimulation in the relief of symptoms of lumbar spinal stenosis. This evaluation used the numerical rating scale (NRS) to assess pain relief and the Medication Quantification Scale III (MQS III) to assess the effectiveness of the interventions on medication consumption. The rates of adverse events related to the interventions were also compared.
Mitral stenosis, a condition characterized by narrowing of the mitral valve orifice, remains a significant cause of morbidity and mortality worldwide, particularly in regions where rheumatic fever is endemic. Despite advancements in medical and surgical management, patients with mitral stenosis often suffer from symptoms such as dyspnea, fatigue, and reduced exercise tolerance, significantly impacting their quality of life (QoL) [1]. One of the hallmark features of mitral stenosis is the development of sinus rhythm, which can be associated with elevated heart rates due to decreased diastolic filling time and compensatory mechanisms to maintain cardiac output. Persistent tachycardia in patients with mitral stenosis contributes to increased myocardial oxygen demand, exacerbating symptoms and potentially leading to adverse outcomes [2]. In recent years, ivabradine, a selective inhibitor of the If current in the sinoatrial node, has emerged as a promising therapeutic option for controlling heart rate in various cardiovascular conditions, including chronic heart failure and ischemic heart disease [3]. By specifically targeting the cardiac pacemaker cells, ivabradine reduces heart rate without affecting myocardial contractility or conduction, offering a unique mechanism of heart rate control compared to traditional beta-blockers or calcium channel blockers [4]. However, the role of ivabradine in patients with mitral stenosis in sinus rhythm remains uncertain, and there is limited evidence regarding its efficacy and impact on QoL in this specific patient population. Therefore, the aim of this randomized controlled trial (RCT) is to investigate the effects of ivabradine on heart rate control and QoL in patients with mitral stenosis in sinus rhythm.
Objective To analyze the effectiveness and safety of robot-assisted percutaneous endoscopic posterior/transforaminal lumbar interbody fusion (RPE-P/TLIF) in the treatment of lumbar spinal stenosis with instability. Methods A single-center prospective study from September 2018 to April 2022, patients with lumbar spinal stenosis and instability who met the inclusion and exclusion criteria were treated with RPE-P/TLIF. Pain visual analog scale (VAS) was used to evaluate the degree of low back pain and lower limb pain before operation, 1 month, 6 months, 1 year after operation and at the final follow-up, and the Oswestry disability index (ODI) was used to evaluate the degree of lumbar spinal function. At the last follow-up, MacNab criteria were used to evaluate the clinical efficacy. Imaging evaluation included the measurement of intervertebral space height, lumbar physiological curvature, fusion rate and pedicle screw accuracy by preoperative and lateral X-ray films.
To evaluate the effectiveness of administering mitomycin C through intralesional injection after performing visual internal urethrotomy (VIU) for the treatment of recurring urethral stricture.
Nasal continuous positive airway pressure (CPAP) acts as a 'pressure' bridge between spontaneous breathing and controlled mechanical ventilation. As a result, there is an increasing trend in the prophylactic use of nasal CPAP in pediatric patients following high-risk airway procedures to reduce postoperative airway complications. Still, there is no study published on the prophylactic use of balloon dilatation in children with tracheal stenosis.The study hypothesizes that implementing postoperative prophylactic CPAP in pediatric cases with subglottic stenosis undergoing balloon dilation may shorten recovery time and minimize airway complications.
This multicenter, non-comparative clinical trial, led by two principal investigators in Spain, aims to evaluate the safety and performance of a robotic assistant, based on a electromechanical tracking system, in patients requiring transpedicular screw fixation. The study, conducted in two different hospital centers, involves patients with vertebral fractures, spinal stenosis, kyphosis, and other related conditions. The primary objective is to determine screw accuracy by assessing the degree of screw invasion into the pedicle using the Gertzbein-Robbins scale, with a target of achieving 96% acceptable screw placement. Trained radiologists will evaluate the screw invasion into the pedicle. The study is scheduled to span 12 months and each intervention includes a 1-month follow-up. Throughout this time frame, patients will undergo regular assessments, and outcomes will be closely monitored.
To evaluate the outcome of visual internal urethrotomy in treating urethral strictures in males with a holmium: yttrium-aluminium garnet (YAG) laser versus when combined with intralesional injection of paclitaxel.
This retrospective, observational, cohort study evaluates the treatment management, long-term outcomes and survival analyses in patients hospitalized in the Intensive Care Unit with a diagnosis of Post-Intubation Tracheal Stenosis (PITS) between 1st June 2016 and 1st June 2022. The study emphasizes the role of bronchoscopic interventions in treatment management and the effective and efficient use of health services.
Conventional peroral methods to visualize biliary strictures are not feasible in some patients with altered anatomy or biliary obstruction, and percutaneous transhepatic cholangioscopy can be used as an alternative procedure. This study aimed to retrospectively review the use of percutaneous transhepatic cholangiography using the SpyGlass DS technology (S-PTCS) during a 5-year period at a Danish tertiary referral center.