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.
Objective: To analyze the survival of patients with a reduction in the number of resected LN in patients submitted to neoadjuvant and total excision of the mesorectum with rectal cancer. Expected results: Survival rate between patients Complete Pathologic Response with less than 12 LN and 12 or more LN. To determine the difference in survival between patients with less than 12 LN in complete versus incomplete response.
Menopause is defined as the last episode of menstrual bleeding, resulting from the interruption of ovarian function by follicular depletion. It is characterized by the presence of amenorrhea associated with increased levels of FSH and low levels of estradiol. The decline in estrogenic levels is associated with several organic changes, from vasomotor symptoms to impaired bone mass and urogenital atrophy. Although for some patients menopause is asymptomatic or oligosymptomatic, many women experience intense symptoms, which profoundly affect quality of life. Proper assessment and treatment of postmenopausal women can significantly improve climacteric symptoms. Target tissue, hormone therapy regimen and variations between patients will influence the effects of treatment. Regarding estrogen, the main factors that influence the therapeutic response are the type of hormone used, the dose and the route of administration. The skin metabolizes only a small part of estradiol. Thus, the transdermal route reaches adequate therapeutic levels from a lower dose of estrogen. The present study aims to evaluate and compare the effects of low dose of oral estradiol associated with oral progesterone and transdermal estradiol associated with vaginal progesterone on variables related to inflammation, coagulation and body composition parameters.
Treatment of obesity related to Polycystic Ovary Syndrome with topiramate or placebo to assess improvement of clinical and laboratory parameters after 6 months of follow-up
Prospective observational study in patients undergoing intra-arterial ophthalmic artery chemotherapy for the treatment of retinoblastoma. The main objective of the study is to evaluate the incidence of cardiorespiratory autonomic reflexes in these patients and to investigate the association between autonomic reflexes and perioperative clinical characteristics.
This is a Phase I dose-escalation and dose-expansion study that will evaluate the safety, pharmacokinetics (PK), and preliminary activity of GDC-6036 in patients with advanced or metastatic solid tumors with a KRAS G12C mutation.
Randomized Clinical Trial comparing two groups: placebo group without self-monitoring of heart rate variability (HRV) and biofeedback intervention that includes self-monitoring of HRV
This study have like aim to examine whether insulin secretagogues have a potential ergogenic effect leading to a better exercise performance and post-exercise recovery in healthy individuals after a resistance training session. METHODS: This is a randomized, double-blind, placebo-controlled, clinical trial. The sample will consist of 44 men. Subjects will be randomly allocated (block randomization, www.randomizer.org) to the following groups: placebo (PFG, n=22) and sulphonylurea (GFS, n=22). The study will consist of 3 visits 7 days apart. On visit 1 the participants will ask to sign an informed consent form and will carry out medical evaluation with anthropometric assessment. At that visit they will perform a one-repetition maximum test of the upper limbs by using the horizontal bench press and of the lower limbs by using the 45º leg press. On visit 2, they will perform a second round of similar 1-RM tests to determine workloads for the study session [sulphonylurea (gliclazide) vs. placebo]. The experimental exercise session will be held on visits 3. Gliclazide modified release 60 mg (Diamicron® MR) or placebo (starch, sodium lauryl sulfate and Aerosil) will be orally administered as matched capsules (same color, flavor, smell and size) 8 hours before the beginning of exercise session, double-blind. In the experimental session, first, warm-up on the bench press and leg press, both with workload at 50% of 1-RM will be carried out. After a 2-minute rest, the resistance training session will be started. It will consist of 4 sets of bench press and leg press exercises at 65% of 1-RM with maximum repetitions until concentric failure. The bench press exercises will be followed by the leg press exercises with no interval between them. A 2-minute interval will allowed after each series of exercises. Measurements for heart rate (HR) and Visual Analogue Scale (VAS) for Pain will be taken before, between each series of exercises and 24 and 48 hours after session. Venous blood samples will be obtained before, immediately after, 24 and 48 hours after, for determining serum levels of creatine kinase isoenzyme MM and lactate dehydrogenase. Capillary blood for glucose determination will be collected from the digital pulp using a glucometer before and immediately after. Resistance training volume will be calculated for each type of exercise as well as total training volume for each session as a product of exercise workload and number of series and repetitions.
Note that this is a study that is co-sponsored by Medecins Sans Frontieres, Spain, and the University of Oxford. The primary objective of this study is to identify clinical and biochemical prognostic markers in adults with virologically confirmed COVID-19 who do not require oxygen supplementation, with a focus on: aiding safe discharge from a healthcare facility (i.e. a high NPV); near-term impact on COVID-19 interventions in resource-limited settings (i.e. simple clinico-demographic variables and biochemical markers for which near-patient / POCTs are commercially available or in late-stage development). The secondary objective of this study is to evaluate the field-based performance of near-patient lateral flow assays for suPAR and IL-6 in adults with non-severe SARS-CoV-2 infection
Implantable devices increase the detection of silent atrial fibrillation in high-risk populations, being a useful tool in the early diagnosis of these patients, allowing monitoring for a longer time. Currently, these devices can be used for monitoring and possible early diagnosis of abnormalities in order to prevent health complications and bring about better outcomes, as well as monitor the user's progress and thus prevent more serious developments. Objective: to analyze, in patients with cardiovascular disease, the electrocardiographic aspects detected from the device in comparison to the conventional electrocardiogram, identifying aspects of similarity between the tracings obtained and automatic diagnostic accuracy by the device and by the visual assessment of the tracing. Method: a cross-sectional observational study of diagnostic accuracy will be carried out at the University Hospital of the Federal University of Piaui. The following parameters were considered: significance level of 95%, test power of 80%, value of the disease diagnosis rate of 84%, area under the receiver operating characteristic curve of 94% and an equal proportion of the number of positive and negative cases. The minimum sample size consisted of 100 patients, and an additional 10% will be added to compensate for possible losses. A total of 110 patients will be invited to participate in the study. Patients aged ≥ 18 years will be included, with the presence of one or more diagnoses below: systemic arterial hypertension, heart failure, valvular disease, coronary atherosclerotic disease, myocardial infarction, endocarditis, myocarditis, diabetes, cardiac arrhythmias and patients with cardiac pace or implantable automatic defibrillator. The variables analyzed will be: clinical-demographic data of the patients, including age, sex, race, socioeconomic profile; comorbidities and electrocardiographic findings as measured by the clock and conventional ECG. The data will be analyzed comparatively between the groups: 1 = EKG on the clock; 2 = 12-lead conventional EKG and DI (single lead). The primary outcome will be the positive diagnostic correlation of the data obtained in group 1 in relation to group 2. Secondary outcomes: successful measurement of the electrocardiographic record by the clock; diagnostic accuracy of atrial fibrillation and other heart rhythm disorders.
This study evaluates the consumption of Açaí Juçara pulp in endothelial function and arterial stiffness in overwheight and obese individuals. Half of participants will receive a hipocaloric diet and two Açaí Juçara pulps for daily consumption, while the other half will receive just a hipocaloric diet.