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.
Anthracyclines are associated with cardiotoxic effects. Previous studies suggest that enalapril, and or carvedilol, protect against cardiovascular effects of these drugs. Ivabradine selectively reduces heart rate through inhibition of the cardiac pace maker IF channel, thus prolonging the duration of spontaneous depolarization in the sinus node. Additionally, ivabradine might preserve myocardial perfusion without negative inotropic effect and probably maintain cardiac contractility despite the reduction of heart rate. Ivabradine has been shown to improve outcome in patients with heart failure and angina. The aim of this study is to evaluate whether ivabradine might prevent anthracycline-induced cardiotoxicity.
This is a controlled, randomized, double-blind clinical study (researcher and research participant does not know which group they belong to), with the objective of evaluating clinical and radiographic performances of primary molar canal treatments with necrotic pulps using two obturator pulps. The CTZ paste (composed of chloramphenicol, tetracycline, zinc oxide and eugenol) and the ZOE paste (composed of zinc oxide and eugenol). The CTZ paste represents an alternative treatment that makes possible to treat canals of primary molars in a simplified way, without instrumentation of root canals. Studies with the CTZ pulp have demonstrated satisfactory clinical and radiographic results in addition to biocompatibility and good antimicrobial action. The zinc oxide and eugenol paste has been studied, presents good clinical and radiographic results, it is indicated by the American Academy of Paediatric Dentistry and requires mechanical chemical preparation of the root canals. Children of both sexes, frequenters of the paediatric dentistry clinic of the Federal University of Piaui who present lower deciduous molars with clinical history and / or radiographic evidences of pulp necrosis will participate in the study. The hypothesis of the study is that both pastes present similar clinical and radiographic results.
The present study is a prospective non-randomized and comparative study of patients undergoing surgical treatment with external fixators of any type, between May 2018 and May 2020, in the city of Passo Fundo, RS, Brazil, in the São Vicente de Paulo hospitals. A study in which we compared infection rates, pin loosening and complications found in external fixators made with hydroxyapatite coated pins and uncoated steel pins.
This study will evaluate the effectiveness of conventional speech therapy associated with functional electrical stimulation in patients with dysphagia after ischemic stroke. Included patients will be divided into two groups, where in the intervention group the speech therapy is associated to functional electrical stimulation, and in the control group, the patients will receive the conventional speech therapy with electrical stimulation Placebo with intensity 0hz.
Back pain is often accompanied by changes in function. The performance of individuals with their backs on their wills may become more functional. It is believed that the test will present good to excellent reliability in individuals with chronic back pain. From this, it can be used in the clinic to verify the functional capacity of these individuals.
Previous studies revealed changes in the pattern of cortical electrical activity of patients with Parkinson's disease (PD) and suggested that these changes may be dependent on the phenotypes of the disease and other related factors. A greater understanding of cortical electrical activity in PD patients may be relevant to guide professionals about the therapeutic use of repetitive transcranial magnetic stimulation (rTMS). The present study aims to evaluate the pattern of brain activity of PD patients and to correlate the findings with the disease phenotypes and with other clinical characteristics. For this, volunteers with PD and healthy will participate in a single experimental session in which behavioral and electrophysiological assessments will be performed.
It's a randomized pilot study to evaluate the incidence of esophageal thermal injury after left atrial ablation for the treatment of atrial fibrillation according to three different strategies of esophageal temperature monitoring. These patients will be divided into 3 groups with different strategies of esophageal temperature monitoring: group 1 without monitoring, group 2 monitoring with single probe thermometer and group 3 monitoring with multi-probe thermometer. The primary end point will be the incidence of esophageal lesions assessed by upper endoscopy.
This study intends to evaluate the impact of resistance training variable manipulation (intensity and volume) on body composition, fatigability and functional capacity in postmenopausal breast cancer survivors.
The study aims to investigate the behavioral effects, neural correlates and functional connectivity of cognitive training in patients with stroke
RENOVATE study aims to investigate if the respiratory support device called High-Flow Nasal Oxygen Cannula (HFNC) acts similarly (non-inferior) to another respiratory support device called Non-Invasive positive-pressure Ventilation (NIPPV) in preventing endotracheal intubation in adult patients with Acute Respiratory Failure (ARF) from different causes. HFNC is a somewhat new method of respiratory support in adults that has been used in neonatal ARF for some years. The reason this study is necessary is that, even though NIPPV has been demonstrated to prevent endotracheal intubation (and its associated complications) in a broad range of ARF patients, HFNC has been proposed to have the same beneficial effect of NIPPV while being easier tolerated, allowing patients to talk, eat and drink through mouth while on HFNC. RENOVATE will recruit between 800 to 2000 patients (adaptive design) with different types of ARF in Brazil. Patients will be randomized to HFNC or NIPPV and the rate of endotracheal intubation will be compared between groups as well as other parameters such as vital status and other health care related complications. [IMPORTANT NOTE] On April 13, 2021, on the first interim analysis, the DSMB recommended the interruption of the immunocompromised hypoxemic ARF subgroup.