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 determine whether the non-invasive negative pressure treatment with the use of the device Vacuum Bellfor is effective for the pectus excavatum treatment
The purpose of this study is to verify and analyse psychological and physiological effects of olfactory aromatherapy and yogatherapy respiratory exercises, together and separately, on the quality of life, levels of stress, quality of sleep and intensity and frequence of hot flashes in climacteric women.
The primary objective of this study is to evaluate the non-inferiority of switching to a tenofovir alafenamide (TAF)-containing fixed dose combination (FDC) relative to maintaining tenofovir disoproxil fumarate (TDF)-containing combination regimens in virologically suppressed HIV-infected participants as determined by having HIV-1 RNA < 50 copies/mL at Week 48.
Crack addiction has become a severe health problem in Brazil. Today, crack addiction is the primary cause for inpatient treatment for all illicit substances. When compared to cocaine, crack users develop much faster diagnoses for crack dependence, shows a more compulsive pattern of use, has higher probability of living or have lived in the streets, and of engaging in illegal activities. Consequently to this, mortality of crack addicts is 7 times higher than for the rest of the population. Despite all efforts being made for the development of effective pharmacological treatments for stimulant addiction (crack included), up to today, there is no robust evidence of efficacy of any pharmacological treatment. For that reason, the use of evidence based psychosocial interventions is so important for treating this population. Although today open treatment facilities in Brazil are more and more starting to use evidence-based interventions such as motivational interviewing, cognitive behavior therapy, relapse prevention and coping skills, such treatments present very modest results when treating crack addiction. The biggest difficulties encountered when treating this population are maintaining patients in treatment, reducing crack use and achieving continued abstinence. A psychosocial treatment based in behavioral principals' named Contingency Management (CM) is widely applied in the USA. Recent meta-analyses and review studies present robust evidence that, when applied alone or in adjunction with other psychosocial and pharmacological treatment, CM is the most effective treatment for what regards, treatment retention, reducing drug use and promoting continued abstinence. The purpose of this study is to evaluate if Contingence Management (CM) can be affective in the treatment of crack addiction in Brazil. To accomplish this, 60 individuals (male and female from 18 to 65 years of age) seeking open treatment for crack addiction will be randomized to 2 treatment conditions (Standard treatment (ST) or ST+CM. Both treatments will last 12 weeks with 3 and 6-month follow-up. In both groups patients will be encourage to leave urine samples 3 times week. Hypotheses: Patients receiving ST+CM will stay longer in treatment, have more negative tests for cocaine/crack, and achieve longer periods of cocaine/crack abstinence when compared to patients receiving ST alone.
After a stent procedure, it is common practice to prescribe anti-platelet medication to prevent the blood from clotting. The main objective of this study is to determine if there is a better medication strategy to prevent blood from clotting and at the same time minimising the number of complications. There are two medication strategies: - Study group: Dual anti-platelet therapy (ticagrelor combined with aspirin) for 1 month, and then ticagrelor alone for another 23 months OR - Control group: Standard treatment, being dual anti-platelet therapy (ticagrelor or clopidogrel combined with aspirin) for 12 months, and then aspirin alone indefinitely
This study will evaluate whether low-density lipoprotein (LDL-C) lowering with evolocumab (AMG 145) results in greater change from baseline in percent atheroma volume (PAV) at week 78 than placebo in adults with coronary artery disease taking lipid lowering therapy.
Prostate cancer is currently the second most common cause of cancer death in men in Western countries. Lymphadenectomy is the gold standard procedure for staging pelvic lymph node and is classically indicated in intermediate and high risk prostate cancer patients and is held at the same time of prostatectomy. A traditionally pelvic lymphadenectomy covers the obturator chain bilaterally. Recently, some studies have demonstrated the existence of lymph node involvement outside the traditional boundaries of classical lymphadenectomy, recommending therefore extended dissection; this also includes the external / internal / common iliac chains and presacral. Thus lymphadenectomy, according to these authors, would also has a therapeutic role, besides helping in better staging. Although some retrospective studies report an association between lymphadenectomy and tumor progression, the exact impact of extended lymphadenectomy in oncological outcome of patients with prostate cancer is not clearly established, mainly by lack of prospective randomized studies on the subject . The study objectives are to compare the oncologic results of extended lymphadenectomy versus limited in order to elucidate the role of extended dissection in lymph node staging and results of treatment in terms of increased tumor cure. The investigators also intend to identify patients who may benefit from oncologically extended procedure. To do this, the investigators will evaluate prospectively patients diagnosed with prostate cancer at intermediate or high risk indicating lymphadenectomy and radical prostatectomy. These patients will be randomized to the extended versus limited lymphadenectomy and the investigators will compare the lymph node metastasis and pattern of spread of prostate cancer, as well as biochemical relapse-free survival, freedom from progression to metastasis and cancer-specific survival.
To evaluate the efficacy of a papain-based gel in caries removal.
Oxidative stress is involved in the pathophysiology of diabetic nephropathy. The superoxide-generating nicotinamide adenine dinucleotide phosphate-oxidase 2 (NOX2, encoded by the CYBB gene) and the antioxidant enzyme glutathione peroxidase 4 (GPX4) play opposing roles in the balance of cellular redox status. In the present study, we investigated associations of single nucleotide polymorphisms (SNPs) in the regulatory regions of CYBB and GPX4 with kidney disease in patients with type 1 diabetes.
The aim of the study is to investigate the possible influence of different durations of use of postoperative elastic bandaging (seven days vs. thirty days) in the results of otoplasty. We hypothesize that the duration of elastic bandage use has no significant influence on the incidence of relapse of prominence of the ears and need for reoperation.