There are about 10004 clinical studies being (or have been) conducted in Brazil. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
Adenotonsillectomy is one of the most common ambulatory surgical procedures performed to children. Tonsillectomy or adenotonsillectomy have a high incidence of postoperative pain. There is still debate about the optimal analgesia for this common surgical procedure. Different methods have been described and used to reduce pain including; improved intraoperative anesthetic pain regimens, use of corticosteroids, adjustment of surgical technique, and intraoperative local anesthetic injection. Intraoperative local anesthetic is a preventive or preemptive analgesia which is the analgesia given before painful stimuli to prevent the subsequent pain. The main goal of the preventive analgesia is the pain relief with minimum side effects. The role of local anesthetic infiltration in the reduction of postadenotonsillectomy pain is still controversial. The objective of this study is to investigate and compare the effectiveness of preincisional peritonsillar infiltration of ketamine and tramadol for post-operative pain on children following adenotonsillectomy. This is prospective, double-blinded randomized study.
Relating the electroencephalogram findings of patients with tinnitus before and after a therapeutic modality is still scarce in the literature, especially with neuromodulatory methods, more specifically with Transcranial Direct Current Stimulation - tDCS. This study is a double blind, sham-controlled clinical trial aiming investigate the impact of tDCS on patterns of brain electrical activity in patients with chronic tinnitus. 36 volunteers with tinnitus will be allocated randomly in 2 groups: the first (n = 18) will receive anodic tDCS in the temporoparietal left area and cathode in the right dorsolateral prefrontal cortex and the second group (n = 18) correspond to the sham group. In addition, healthy individuals (n = 18) will be recruited for comparative purposes of brain electrical activity with and without tinnitus, totaling 54 participants. Patients with tinnitus will receive transcranial direct current stimulation for 20 minutes for 5 consecutive days (1 week) and will be assessed before and after intervention by electroencephalogram, Acuphenometry, Visual Analogue Scale - VAS and questionnaire Tinnitus Handicap Inventory- THI. Follow-up of volunteers will also be performed after 1 month of the end of treatment with tDCS.
This project will be test the effect of probiotics on occupational allergic sensitization, respiratory symptoms and bronchial hyperresponsiveness in workers or students that develop respiratory symptoms exposed to laboratory animals, i.e., small rodents.
The aim of this study is to evaluate the effect of shortening the etching time on the 18-month clinical performance of resin composite restorations in primary molars after partial carious removal. This randomized clinical trial will include subjects (5-10 year-old children) selected at Pediatric Clinic of Federal University of Santa Maria. The sample will consist of 70 primary molars presenting active cavitated carious lesions (with radiographic involvement of the outer half of the dentin), located on the occlusal surface. The sample will be randomly divided into two groups according to the etching time of the dentin prior adhesive application (Adper Single Bond 2; 3M ESPE): recommend by manufacturers (15 seconds) and half-reduced etching time (7 seconds). The restorations will be clinically followed every 6 months for up to 18-month using the FDI criteria for clinical evaluation. Survival estimates for restoration longevity will be evaluated using the Kaplan-Meier method.
Obese patients have a high level of intestinal microflora imbalance, with serious consequences such as loss of digestive function. Potential mediators of intestinal microbiota are prebiotics, supplements considered safe because they are naturally contained in food and human microbiota. Probiotics are living bacteria which are found in the normal gut microbiota. Synbiotics are combinations of both prebiotics and probiotics. Their use has been studied as a new therapeutic approach for the regulation of intestinal microbiota in various situations of disease, including severe obesity. This is a double-blind, placebo-controlled, randomized clinical trial to assess the effect of synbiotic supplementation (fructo-oligosaccharide and probiotic - 12 g / day) on body mass index in participants with obesity class III, with follow up of 90 days.
Introduction: Patients post-stroke may have autonomic dysfunction, with increased blood pressure, heart rate (HR) and increased risk of sudden death. Studies have shown that transcranial direct-current stimulation (tDCS) can modulate the autonomic nervous system in healthy subjects, but little is known about these effects in stroke. Objective: To evaluate the effect of tDCS after treadmill training in the autonomic nervous system modulation in patients post-stroke.
The main objective is to conduct a study protocol to investigate the effects of repetitive Transcranial Magnetic Stimulation (rTMS) on sensory and motor performance of individuals with incomplete spinal cord injury (iSCI) . A double-blind randomized sham-controlled trial of patients with iSCI will be conducted.
The aim of this study is to compare the visualization rates of the ampulla of Vater using forward- viewing endoscopes with or without cap attached to the distal end in the same patient.
This project is one of four components of a thematic project that aims to evaluate the use of ultrasound in regional and infiltration blocks, called "Use of ultrasound in regional blocks and infiltration for the treatment of acute and chronic pain". It aims to evaluate quantitatively and qualitatively the knee pain control in patients with osteoarthritis after neurotomy by saphenous nerve radiofrequency guided by ultrasound , compared to neurotomy by radiofrequency of genicular nerves guided by fluoroscopy . Differences between total consumption of analgesics, side effects of medications , impact on quality of life and functional capacity in patients undergoing saphenous nerve neurotomy by radiofrequency guided by ultrasound compared to neurotomy by radiofrequency of genicular nerves guided by fluoroscopy, will also be evaluated.
This is a double-blind placebo-controlled randomized clinical trial to test the use of tamoxifen or lidocaine for diminishing the pain and discomfort while performing mammography, intending to include 450 patients distributed between the three groups.