Loading clinical trials...
Loading clinical trials...
Browse 47,334 clinical trials for rheumatoid arthritis. Find studies that match your criteria and connect with research centers.
Find trials near:
Showing 26541-26560 of 47,334 trials
NCT05181774
Objectives: Atrial fibrillation (AF) is the most common arrhythmia. Anticoagulation with warfarin or new oral anticoagulants in patients with AF can significantly reduce thromboembolic events. However, due to the lack of bleeding risk predictors of oral anticoagulants, the bleeding risk of patients with AF cannot be accurately evaluated. The purpose of this study is to screen biomarkers that can predict bleeding in patients with AF through proteomics and metabolomics, and construct the protein metabolic network pathway of anticoagulant bleeding in patients with AF. Design: AF patients treated with oral anticoagulants were enrolled in this study. Blood samples were centrifuged and the supernatant was stored in the refrigerator at - 80 ℃. All patients were followed up for one year to determine whether bleeding occurred after oral anticoagulants. Proteomic data were obtained by LC-MS/MS Analysis-DIA platform. Metabolomic data were obtained by UPLC-QTOF/MS platform. All of the omics data were used to compare proteins/enzymes with metabolic pathways. Quantitative changes of individual metabolites and proteins were calculated and graphed using the KEGG mapping tools.
NCT04510701
This case series will recruit patients who require lateral maxillary sinus floor elevation surgery. This procedure will be carried out as per standard surgical protocol. The periodontal resident performing the surgery will evaluate the Schneiderian membrane at several points during the surgery to determine its integrity (beyond visual inspection). This will be completed by using the videoscope to evaluate the membrane. This evaluation will take place at at least 3 points during the surgery (before membrane elevation, half-way through membrane elevation, and prior to initiating bone grafting procedures). If the resident wishes to evaluate the membrane at other points during the surgery to inspect the integrity of the membrane, this may be accomplished. This evaluation will be recorded for later, further evaluation by experienced periodontists. If no visible perforation is evident, a 1% baby shampoo solution in normal saline (Johnson and Johnson) will be applied topically over the membrane prior to videoscope evaluation. At this point, the patient will lightly blow their nose; if any micro-tears not visible to the naked eye are present, these tears will produce a bubbling effect, which will be recorded by the videoscope. This evaluation will take place with the 1st and 2nd videoscope evaluations (before membrane elevation, and mid-way through elevation). Patients will be asked to complete a VAS questionnaire at their one-week follow-up appointment in order to determine how post-op healing has been progressing. After all procedures have been performed, three experienced periodontists will individually evaluate the videos post-surgically. They will evaluate each video and determine if, in their opinion, there is a membrane perforation (yes/no). Each video will be evaluated in a random fashion (each video being evaluated as a separate event, and not by case). The evaluating periodontists will also be masked to the results noted by the surgeon who completed the surgery, and blinded to the patient's information.