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.
Introduction: postpartum hemorrage is a leading cause of death after cesarean sections in Brazil. Oxytocin is the main drug for both prophylaxis and threatment of postpartum hemorrage because uterine atony is the most prevalent cause. Both excessive and too low oxytocin doses threaten the life of women. Objective: to determine the minimum effective dose of oxytocin for cesareans during labor. Method: adaptative clinical trial using a modified up and down method of two sequential groups: rule of three and continuous infusion. Allocation in rule of three or continuous infusion will be random and masked for patients and anesthesiologists. The minimum effective dose will be the effective dose for 90% of success (ED90 for preventing uterine atony).
Open label study to evaluate tafamidis for the treatment of transthyretin cardiomyopathy
The main objective of this trial is to investigate the effects of foot muscle strengthening in daily activity of patients with diabetic neuropathy.
This is a randomized study to evaluate the efficacy and safety neoadjuvant androgen deprivation therapy with goserelin and abiraterone with or without apalutamide prior to radical prostatectomy for patients diagnosed with localized high-risk prostate cancer.
Evaluation of the effectiveness of using a night orthosis for II and III or fingers of the dominant hand in women diagnosed with symptomatic osteoarthritis compared to a control group.
Mate or yerba-mate (Ilex paraguariensis A.St.-Hil.) is a native plant from South America highly consumed in this region. Different traditional products (mate, mate tea, chimarrao, tereré) are obtained from the yerba-mate leaves and consumed as herbal tea. Mate is a rich source of bioactive phenolic compounds, mainly caffeoylquinic acids. The richness of different mono- and dicaffeoylquinic acids is a peculiarity of mate derived products. However, in contrast to other plant-based beverages rich in polyphenols like tea or coffee, the research and the industry have yet little explored the potential interest of mate product to promote human health. There has been a growing interest to the development of healthier foods to face the burden of cardiovascular diseases (CVD), especially those naturally rich in bioactive phenolic compounds with protective effects against the development of chronic diseases. Different in vitro and animals studies associate the mate consumption with cardiovascular protection mechanisms. Consistent information about this activity and the long-term consumption effects in humans are scarce. The aim of this study is to assess through a randomized controlled trial the impact of chronic intake of mate on intermediate biomarkers of cardiovascular health in humans and to identify possible involved nutrigenomic mechanisms.
This study aims to verify the actual possibility of using silver diammine fluoride (SDF) in arresting enamel caries lesions on occlusal surfaces of primary molars in babies. Besides, the cost-efficacy and also parental acceptability of using SDF will be evaluated. For this, 100 babies 1-3 years will be examined and treated in a mobile dental unit, which will temporarily be parked in public schools of Barueri, Sao Paulo, Brazil. The caries diagnosis will be conducted using the International Caries Detection and Assessment System (ICDAS). Babies with initial lesions will be randomized concerning the treatment in Group A (SDF) and Group B (fluoride varnish). Participants will be examined in the baseline and followed by 6, 12, 18 and 24 months. As primary outcome, caries progression into dentine will be considered. Acceptability reported by parents after treatments, the time and estimated money spent for treating will also be collected. Social and biological data that could be related to efficacy of techniques will be also collected. Multilevel analyses will be performed to check which technique will be most effective and possible factors associated to its efficacy. Discomfort, acceptability and costs will be compared between/among the approaches used to arrest enamel caries lesions.
This study will evaluate the efficacy of an intervention to improve quality and duration of self-regulated nighttime sleep (the amount of time the child maintains a combination of uninterrupted sleep, quiet wakefulness, and re-initiation of sleep without parental intervention).
Helicobacter pylori is a common bacterial infection. It can lead to severe stomach problems, including stomach cancer. Researchers want to look at samples of the bacteria. These H. pylori strains will be taken from chronically infected people. They want to identify the genetic and epigenetic differences in H. pylori strains. This could help predict which people who get infected with the bacteria will get stomach cancer. This could lead to the cancer being detected earlier. It could also mean less people get stomach cancer. Objectives: To study genetic variations of H. pylori strains based on samples from chronically infected people. To identify the features of strains that might lead to severe stomach problems or stomach cancer. Eligibility: People ages 30-70 years who need an upper endoscopy or who were recently diagnosed with stomach cancer Design: Participants will be screened by the doctor who does their procedure and a study nurse. Participants who have endoscopy will have ~6 biopsies removed. These are tissue samples. They are about the size of a grain of rice. Participants will allow the study team to access reports from their stomach exam. Participants with stomach cancer will donate some of the tissue that will be removed during their clinical care. They will allow the study team to access reports of their surgery. They will also allow them to access the microscope slides of their stomach.
Introduction: Acute Heart Failure is frequently decompensated by pulmonary infection, but the diagnosis of pulmonary infection sometimes is difficult in these patients due to similar signals and clinical symptoms in both pathologies. Furthermore, when it is possible the diagnosis of pulmonary infection, physicians may have difficult to determine etiology and delaying antibiotic therapy. Procalcitonin (PCT) have been used like a biomarker to determine the period of use of antibiotics in patients with acute respiratory infections. It is specific for bacterial infections and it have showed as a marker of severity infection and may help to determine interruption period of antibiotic therapy in a safety way for the patient. Aim: Evaluate levels of PCT related to interruption of antibiotics in patients with decompensated acute heart failure (DAHF) with suspected bacterial pulmonary infection. Methods: In this pilot project will be included around 100 patients, randomized in two groups: group A (PCT levels may guide the interruption of antibiotic at day 5) or group B (antibiotic period will be determined by the physician without the knowledge of PCT levels). Will be collected laboratorial and clinical data at days 0,3 and 5. Both groups will be compared to evaluate PCT levels and total period of antibiotic therapy, hospitalization and readmission in 30 days. This study will determine the sensibility/specificity of PCT in patients with DAHF.