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.
The purpose of this study is to assess the efficacy of an 8-week bedaquiline monotherapy regimen in participants with treatment-naive, multibacillary (MB) leprosy.
The extraction of third molars, a frequent treatment in clinical dental practice, can lead patients to painful symptoms during and after surgery. The dental surgeon must correctly indicate the need for extraction and also provide patients who need this treatment greater comfort and control of pain in the trans and postoperative period. Thus, it is necessary to use an effective local anesthetic favoring the factors inherent to the postoperative and achieving good treatment results.
This study will investigate if nivolumab will improve recurrence-free survival (RFS) compared to placebo in participants with HCC who have undergone complete resection or have achieved a complete response after local ablation, and who are at high risk of recurrence
Evaluation of metabolic profile of users of hormonal and non-hormonal contraceptives during five years follow-up
A 52-week study to compare the efficacy of relamorelin with that of placebo in participants with diabetic gastroparesis (DG) with respect to the core signs and symptoms of diabetic gastroparesis.
Traumatic Brain Injury (TBI) is a serious public health problem due to its high mortality and morbidity rates, mainly affecting young adult males. Aggression to the prefrontal cortex, caused by an external physical force, responsible for anatomical injury and/or functional impairment, causes cognitive deficits with important consequences for the individual affected by the trauma and their caregivers. Therefore, rehabilitation is of utmost importance. The increase in pre-frontal cortical activation through training, activity-dependent stimulation and neuroplasticity, especially in the dorsolateral prefrontal cortex (DLPFC) is related to better performance in functional memory. In this context, Transcranial Direct Current Stimulation (tDCS), intended to drive neuroplastic changes in the brain, has been widely used to bring benefits to the cognitive function of individuals affected by various neurological conditions, including TBI by promoting neuroplasticity for critically involved cortical areas in the performance of tasks, culminating in cognitive benefits. In addition, studies have shown greater benefits when the technique is combined with cognitive training. Therefore, the objective of this parallel, randomized, double-blind, placebo-controlled clinical trial is to investigate the effect of tDCS applied on the dorsolateral prefrontal cortex and virtual reality cognitive training alone or in association with tDCS on cognitive function of individuals with severe chronic TBI.
Chronic obstructive pulmonary disease (COPD) is characterized by a poorly reversible airway obstruction and consequent systemic manifestations. Its high prevalence and high number of diagnosed patients has become a challenge for health services due to the costs of diagnosis and treatment of these patients. Positive pressure and aerosol therapy are preferred therapies for the management of COPD symptoms, but their effects when associated are poorly studied. The objective of this study is to compare the effects of different positive pressure strategies associated with aerosol therapy through Pulmonary Scintigraphy and Electrical Impedance Tomography (EIT) in patients with COPD in the intercrise period. This is a randomized, crossover, blinded and allocated crossover type clinical trial in which patients with moderate to severe COPD will be allocated to three intervention groups with different strategies for positive pressure associated with aerosol therapy: control group 1 nebulization), group 2 nebulization with EPAP valve and group 3 nebulization with NIV bi-level pressure mode. The radioaerosol deposition pattern will be evaluated through Pulmonary Scintigraphy and regional pulmonary ventilation through EIT.
No previous studies have evaluated the frequency and severity of Chronic Obstructive Pulmonary Disease (COPD) symptoms over a period of 24 hours (early morning, daytime and nigth-time symptoms) in stable COPD patients seen in clinical practice in Brazil. COPD is a common disease seen by primary care physicians and one of the most common diseases referred and diagnosed by pulmonologists. According to previous studies, symptoms of COPD can have a substantial impact on patients' quality of life and present a considerable degree of variation for the same degree of airflow limitation. The objective of this study is to learn more about the burden of symptoms in the real-world population of COPD patients in Brazil. With the real life data coming from this study, it will be possible to describe 24-hour COPD symptoms in Brazil and their impact on patients' quality of life and other PROs, the relationship with patients´ behaviour regarding adherence to respiratory medication and burden of COPD symptoms in terms of the impact on health economics. In the present study, the investigators will assess and characterize COPD symptoms over a period of 24 hours, by collecting information about the respiratory symptoms experienced at different times of the day and night in patients with stable COPD under real clinical practice conditions. In addition, the investigators will evaluate the correlation between each of these symptoms and the GOLD classification, adherence to respiratory treatment, level of dyspnea, disease severity, comorbidities and physical activity. Finally, the investigators will assess the relationship between 24h symptoms and direct cost related to treatment and HRU in the previous year to assess the burden of COPD symptoms. The present study is based on a similar protocol applied in Latin-American patients, the LASSYC Study. Extracted data will be used for a Brazilian analysis of these outcomes and may be used in future analyses combined with the results of LASSYC Study for a global view of Latin America.
The purpose of this study is to evaluate the clinical and virologic benefit of pimodivir in combination with Standard-of-Care (SOC) treatment compared to placebo in combination with SOC treatment.
The transfer of frozen / thawed embryos has been routinely performed in the last 30 years as part of Assisted Reproduction treatment (ART). Currently, more than 50% of couples submitted to ART have surplus embryos eligible for freezing followed by transfer in subsequent cycles. Therefore the selection criteria for the thawed embryos to be transferred must be rigorous in order to maximize pregnancy and of live birth rates. Usually, the evaluation of the embryos before transfer can be performed based on blastomeres survival after a short culture period between thaw and embryos transfer, i.e., 2 to 5 hours, or based on embryo development over a prolonged period of culture (18h to 24h). Post-thaw embryo culture might have an impact on the recovery of mitosis and normal cellular functions. However, until now, there is no consensus in the literature on which post-thaw culture interval has a better impact on pregnancy and live birth rates. Also, blastocysts formation after freezing/thawing of embryos at cleavage stage may bring relevant information about post-thaw culture. Moreover, this strategy can be used as an alternative treatment. Therefore, the authors proposed this prospective randomized, triple-blind study to evaluate the impact of post-thaw embryo culture on the pregnancy and live birth rates.