View clinical trials related to Necrosis.
Filter by:The main objectives of this study are to confirm the long-term safety, performance and clinical benefits the Avenir Complete femoral stem and its instrumentation when used in primary total, hemi, and revision hip arthroplasty.
The primary aim of the study is to compare the outcome of one vs two visits endodontics (root canal treatments) performed in general dental practice of infected (necrotic) teeth, one and four years after treatment. Secondary aims are to compare the root filling quality and the frequency of complications for both treatment modalities. A pilot study will identify the shortcomings of the protocol, which will be revised accordingly. A multi-center study in several clinics from five counties throughout Sweden is planned. Consecutive eligible patients (see inclusion and exclusion criteria) with one tooth each will be included. The study sample size calculation was based on a judgement that a minimal worthwhile effect of less than 10% was not clinically relevant. The presumption was that successful outcomes would be of 75% and 65% for the different treatment arms, respectively. Three hundred and fifty six patients per group are thus needed to detect that difference as statistical significant with a power of 80% and an alfa-error of 5%. To compensate for around 30% drop-outs a number of 1000 patients will be recruited. Patients will be randomly enrolled in two arms: one in which the endodontic treatment (root canal treatment) is performed in one visit, and in the other arm in two visits. The allocation sequences for one vs multiple visit endodontics will be computer generated followed by a dark colored envelope concealed allocation. The patients will be contacted by telephone 5-7 days post-operatively, and a control visit at the clinic will be scheduled one month post-operatively to assess complications related to the treatment. A clinical control will be performed at the clinic one and four years after treatment. Intra-oral radiographs will be taken. The radiographs will be examined by two blinded and independent observers. A successful outcome is defined by clinical and radiographic normalcy. The statistical methods selected to analyse the primary outcome will be the Chi square test of 2x2 tables, or Fisher´s exact test when proportions are small and the expected value <5. The calculations will be two-tailed. Results will be considered statistically significant at p<0.05.
Gangrenous cholecystitis is the most common complication of acute cholecystitis. Preliminary data showed that COVID-19 patients have a high risk to present necrotic cholecystitis. The Cholecystitis under COVID-19 pandemic WSES (ChoCO-W) study aims to investigate risk factors and high-risk patients to develop necrotic cholecystitis during this pandemic and their management.
This trial uses magnetic resonance elastography (MRE) to estimate tissue stiffness (hardness or softness of the tissue) in tissue that is affected by radiation treatment (radiation necrosis) and tumor tissue that has come back (recurrent) after treatment in patients with gliomas. Diagnostic procedures, such as MRE, may estimate the differences in tissue stiffness between radiation necrosis and recurrent glioma post treatment and ultimately lead to a more accurate diagnosis and/or surgery, and/or a better assessment of the disease's response to treatment.
This randomized, single surgeon, placebo controlled, double blind study will be conducted in order to investigate whether or not peri-operative high doses of intravenous glucocorticoids improve short-term functional outcome after direct anterior total hip arthroplasty. So far, it has been proven that high dose glucocorticoids reduce immediate post-operative pain and nausea, but no data exists on functional outcome during the first 6 weeks. Our hypothesis is that patients in the intervention group will follow a so-called "get ahead, stay ahead" principle and that glucocorticoids can be considered an important tool (adjuvant treatment) in the enhanced recovery pathway after THA with significant socio-economic implications.
This study is to evaluate the effectiveness of regenerative endodontics therapy in single-rooted permanent teeth with pulp necrosis，and compare the clinical efficacy of platelet rich fibrin (PRF) and blood clot (BC) as scaffolds.
The infected pancreatic necrosis (IPN) should be treated by debridement and drainage. In recent years, the results of clinical research show that minimally invasive debridement such as video-assisted (laparoscope, nephroscope, endoscopy, etc.) and total laparoscopic debridement can significantly improve the prognosis of IPN patients. After a long period of clinical practice, laparoscope-assisted debridement was selected as the main surgical method in our center. In many large-scale clinical studies, patients after surgery underwent necrotic cavity lavage (such as small omental sac lavage, retroperitoneal space lavage, peripancreatic lavage, etc.), but its necessity and clinical significance were not clearly stated in the guidelines. At present, the clinical research mainly focuses on the improvement of minimally invasive debridement, and less on the necessity of lavage. In the past, necrotic cavity lavage was performed in IPN patients, but long-term clinical observation showed that lavage may lead to spread of infection and increase the incidence of lower extremity venous thrombosis which is not accorded with ERAS(Enhanced Recovery After Surgery). Therefore, since 2012, our center has stopped necrotic cavity lavage for IPN patients after debridement. We retrospectively analyzed the therapeutic effect from February 2014 to August 2017 and found that even without necrotic cavity lavage, better therapeutic effect could be achieved. Meanwhile it can simplify the operation process and avoid infection spread. This treatment method provides a new idea. However, it is a retrospective study not a randomized controlled trials(RCT) which is low effectiveness of proof. Therefore, we design this RCT to verify the necessity of necrotic cavity lavage after laparoscope-assisted debridement for patients with infected pancreatic necrosis.
Sequential immune apheresis plasma volume escalation cohort study of reduction of soluble Tumor Necrosis Factors Receptors 1/2 (sTNFR1/2), with or without Nivolumab, in patients with inoperable or metastatic solid Tumors. This study evaluates Immunicom fs LW-02 device used with Spectra Optia apheresis system, aiming to answer two different study questions: - Safety, tolerability and effectiveness of the device. - Safety, tolerability and effectiveness of the device, employed as monotherapy, or combined with Nivolumab.
This research study is investigating the value of an imaging study of the brain called an MRI (which stands for magnetic resonance imaging), utilized in unique way, to delineate whether the tumor has recurred or whether radiation changes have occurred after a brain metastasis treated with focused radiation has enlarged.
The aim of this study was to evaluate whether perioperative probiotics can reduce the incidence of postoperative cognitive dysfunction and postoperative delirium.