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.
Under in vivo conditions, human gametes and embryos are exposed to fluids in the fallopian tubes, where fertilization occurs, and in the uterus, the site of embryonic implantation. The composition of these microenvironments is extremely complex and diverse. On the other hand, infertile couples who need in vitro fertilization treatments have their gametes and embryos cultured for a few days in commercial culture media. The composition of the media used in assisted reproduction laboratories varies according to the manufacturer and culture strategy. It is already known that the exposure of embryos to different concentrations of nutrients can affect the effectiveness of in vitro fertilization treatments, such as the fertilization rate, embryonic development speed, implantation rate, gestation, abortion, newborn weight, among other factors. Although these aspects are much discussed in the literature, there is still no consensus regarding the choice of a specific culture medium. Thus, the present study aims to evaluate the influence of three commercial culture media on the fertilization rate and embryonic quality through a prospective randomized clinical trial using sibling oocytes from patients undergoing in vitro fertilization cycles.
PrEP (pre-exposure prophylaxis) is an effective prevention strategy in which HIV-negative individuals take antiretroviral drugs (tenofovir disoproxil fumarate and emtricitabine - TDF/FTC) to reduce HIV acquisition. Clinical studies have shown that the TDF/FTC combination protects MSM and transgender women against HIV infection. According to the PROUD study, PrEP can decrease the risk of HIV infection among MSM by 86% (90% CI 64-96). The international community recognizes that PrEP can be an additional tool in the framework of a combination prevention package for those most at risk of contracting HIV. Data on HIV incidence among MSM and trans women are largely unknown. In Brazil, Mexico and Peru, data on the incidence of HIV among MSM and trans women are very scarce, limited to small cross-sectional studies.Current methods used to determine HIV-1 incidence have many limitations. These methods include mathematical modeling, retrospective calculations of AIDS case reports, age-based prevalence determinations, and prevalence determinations with multiple rounds of longitudinal surveys to estimate HIV incidence, which require numerous assumptions and inputs and can pose additional challenges in the era of expansion of antiretroviral therapy (ART) and increased survival of HIV-1 infected individuals. On the other hand, prospective longitudinal cohort studies of high-risk individuals can be used to estimate incidence; however, they are often labor-intensive, complex, very expensive, difficult to implement in most countries, and have recruitment biases. Laboratory methods can be unbiased and do not require complicated assumptions and case-by-case weighting. The cross-sectional use of Recent HIV Infection Tests (TRIs) based on biomarkers offers, in principle, accessible, reliable and low risk of bias options for estimating incidence.
Evaluation of upper airway with Magnetic Resonance and polysomnographic at the pre and post operative of 23 women having undergone bariatric surgery (with the Y-Roux technique) for treatment of obesity.
The interoception capacity may be changed with mind-body intervention. This study case investigated the interoceptive capacity, measured by MAIA scale of a pacient with mood disorders and if it can be influenced through of a 7 weeks intervention of interoceptive exercises and the impaction in the patient´s daily life. The aim was analyse the effects of mind-body exercise program with interoceptive approach in the anxiety and depression symptoms, interoceptive capacity, as well your impact in paitient's daily activities. M.S is 47 years old, was forwarded from University Hospital Clementino Fraga Filho to extension project named as "corpo&mente" (body-mind), an anamnesis was performed including patient's life story, interoceptive scale, anxiety and depression scale from Hamilton and a risk stratification to realize physical activities (it was also performed post-intervention). The exercise program lasted 1h 15 min and it was performed once a week.
This observational and retrospective study will follow the recommendations of the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE). The aim is to verify and analyze the clinical and laboratory variables with prediction capability for indication of invasive ventilatory support in patients with COVID-19. The present study will be carried out in specific care units for patients with suspected or confirmed COVID-19. Individuals with suspected or clinical diagnosis of COVID-19, with a minimum hospital stay of 24 hours and submitted to oxygen therapy or non-invasive ventilation will be selected. Clinical and laboratory variables will be collected from the moment of admission and every 12 hours until the third day of hospitalization. The primary outcome will be rate of endotracheal intubation, while secondary outocomes will be lenght of stay in intensive care unit, and hospital, as well as mortality rate.
The goal of this clinical trial is to investigate the efficacy of an online educational program for physical therapists to change back pain beliefs. The main questions it aims to answer are: - What is the effect of an online educational program to change beliefs about the management of back pain in physical therapists? A total of 106 physical therapists will be recruited for this study. Participants will be randomized into two groups: intervention and control groups. The intervention group will receive a 6-week online educational program including recommendations from international clinical practice guidelines for the management of back pain. The control group will not receive any intervention. The outcomes of this trial include beliefs about management of back pain and imaging exams and will be assessed at baseline and 6 weeks after randomization.
This trial evaluated the influence of polishing on enamel color change after in-office bleaching treatment. It also evaluated the influence of polishing on tooth morphology and sensitivity.
This is a single-center retrospective cohort study on cancer patients who underwent emergency ostomy. Our objective was to compare the incidence of surgical complications as well as the length of hospital stay among three different techniques for ostomy confection (laparotomy, the conventional local approach, described as trephination, and laparoscopy).
Background: Individuals with PD commonly have a significant reduction in respiratory muscle strength and inspiratory muscle endurance, and it can intensify with the disease progression. Respiratory muscle training has shown to increase respiratory muscle strength in individuals with Parkinson's Disease (PD). However, the effect size on other functional outcomes has not been determined and/or investigated. In addition, no studies have investigated the effects of high-intensity respiratory muscle training (inspiratory and expiratory) in this population. Objectives: The primary aim of this study will be to investigate the effects of high-intensity respiratory muscle training on inspiratory and expiratory muscle strength in individuals with PD. The secondary aim of this study will be to investigate the efficacy of high-intensity respiratory muscle training in improving inspiratory muscle endurance, peak cough flow, dyspnea, fatigue, exercise capacity, and quality of life in this population. Design: A randomized controlled trial with blinded assessment will assign eligible participants to either: high-intensity respiratory muscle training (experimental group) or sham training (control group). Individuals will perform a home-based intervention, not directly supervised, consisted of two daily 20-min sessions (morning and afternoon), seven times a week, during eight weeks. Study Outcomes: Primary outcomes are inspiratory and expiratory muscle strength (MIP and MEP). Secondary outcomes are respiratory muscle endurance, peak cough flow, dyspnea, fatigue, exercise capacity, and quality of life.The outcomes will be measured at baseline, post-intervention (after the 8-week intervention), and one month after the cessation of the intervention (12-week follow-up). Conclusion: The results of this trial will provide valuable new information on the efficacy of high-intensity respiratory muscle training in improving muscle strength and other functional outcomes in individuals with PD.
A Multicenter, Randomized, Double-blind, Placebo-Controlled Clinical Trial to Evaluate the Efficacy and Safety of Probiatop in the Treatment of Digestive Symptoms. Phase IV. The casuistic presented in this protocol is 150 participants randomized at a 1:1 ratio (75 receiving Probiatop and 75 receiving placebo), balanced by age, sex, prebiotic intake* and summation of the Gastrointestinal Symptom Rating Scale (GSRS) questions related to the domains of diarrhea (questions 11, 12, and 14), indigestion (questions 6, 7, 8, and 9), and constipation (questions 10, 13, and 15) separated by intensity and frequency. Participants with recurrent digestive symptoms for at least 3 months, with a score of 21 on the sum of questions 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15 of the GSRS (corresponding to the domains diarrhea, indigestion and constipation) will be randomized to Probiatop or placebo.