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 main purpose of this study is to evaluate the safety and efficacy of tadalafil in pediatric participants with pulmonary arterial hypertension. Participants will receive study treatment for 6 months in the double-blind period (Period 1), and then will be eligible to enroll into an open-label 2 year extension period (Period 2) during which participants will receive tadalafil.
Primary Objective: To investigate the effectiveness of intravitreal applications of 0.5 mg Lucentis (ranibizumab) in patients with vitreous hemorrhage due to proliferative diabetic retinopathy. The primary endpoint for the study will be the mean change in best-corrected visual acuity (BCVA) from baseline to the mean level at Month 3. Secondary Objectives: 1. To assess any differences in mean change in BCVA over time; 2. To assess differences in vitreous transparency (amount of hemorrhage) with fundus angiography exam; 3. To assess any differences in retinopathy severity level according to the Early Treatment Diabetic Retinopathy Study; 4. To correlate the visual outcomes with serum glucose levels.
Introduction: Inhalation therapy has been established as an efficient route to treat asthma exacerbations, but coupled to noninvasive ventilation (NIV) remains quite challenging. Objectives: The aim of this study were to compare radiaoaerosol pulmonary index and radioaerosol mass balance in the different compartments (pulmonary and extrapulmonary) using vibrating mesh nebulizers (VMN) and jet nebulizer (JN) coupled to noninvasive ventilation (NIV). Material and methods: The investigators assessed 10 stable moderate to severe asthmatics in a crossover study. Patients was randomly assigned to participate in both phases of the study: Phase 1(NIV+MN) and phase 2(NIV+JN). DTPA-Tc99m with radioactivity of 25 miC was used to inhaler using JN positioned in the circuit using a "T" piece, particle size generation in a five micron range and oxygen flow tritated at eight L/min and MN was positioned in the mask, particle size generation in a one range and connected to electrical energy. NIV was used a bilevel pressure through a face mask attached with straps and pressure adjusted were 12 cmH2O and 5 cmH2O as inspiratory and expiratory pressures, respectively. After, radioactivity counts were performed using a gama camera and regions of interest were delimited. To calculate aerosol mass balance the investigators considered the amount of radioaerosol deposited into the lungs, upper airways, stomach, nebulizer, circuit, inspiratory and expiratory filters, and mask divided for each of these compartments and represented as a percentage.
The purpose of this trial is to better define how individuals with different genetic make-ups will require different interventions to improve their methylation potential and nutrient status.
The aim of present study is to evaluate whether a program of behavioral and cognitive procedures for emotional control, and assertive training, produces well-being and improvement in quality of life of healthy volunteers.
The purpose of this study is investigate mycophenolic acid exposure through area under the curve in renal transplants recipients treated with mycophenolate mofetil and after conversion to mycophenolate sodium.
The accelerated rehabilitation and early return does not seem to be harmful, but still needs further research to define the rehabilitation time is what shows Kruse and collaborators (2012) in their study of systematic review. The surgical treatment of anterior cruciate ligament injury is the gold standard in the treatment of these injuries in young and active, the postoperative rehabilitation is extensive and full return to sport occurs only after 6 months postoperatively. Based on this gap, the investigators seek to draw properly through our study methods and more complex techniques, that comparing two rehabilitation programs can achieve high precision early rehabilitation. This will include 32 athletes who had complete ACL rupture confirmed by MRI and underwent ACL reconstruction using patellar tendon.All subjects will be followed from the pre-surgery, the fourth and sixth month after surgery with: KT1000 measures the ligamentous laxity, knee function by applying the International Knee Documentation Committee (IKDC 2000); Isokinetic Muscle Strength (Cybex). Through a random draw of sealed envelopes, patients will be allocated in their rehabilitation groups: Accelerated (4 months) or Conventional (6 months). Preoperatively, fourth and sixth month after surgery will be an assessment of laxity by (KT1000), Muscular Strength (CYBEX) and knee function affected by IKDC (2000) and Hop Test. The assessor and the patients were blinded to treatment group. This study will have the locus Institute of Orthopaedics and Traumatology, School of Medicine, São Paulo. The comparative results of the two groups are analyzed using specific statistical tests to prove an improved significative without damaging the integrity of the graft.
This is a prospective, open, randomized study involving 100 patients with microvascular complications of type 2 diabetes mellitus and obesity, who will undergo gastric bypass (Roux-en-Y gastric bypass ARM A) or receive best medical treatment (ARM B, control arm). The aim of this study is to evaluate the effects of Roux-en-Y gastric bypass in the control of diabetic nephropathy in diabetic patients with BMI between 30 and 35 kg/m2. The medical community is confronted with many different studies using various methodologies to investigate the best pharmacological treatment for type 2 diabetes mellitus. The treatment algorithm offers several different options according to the stage of the disease (which is different in each study). In addition, new drugs are being developed over the years, but are not always a guarantee of effective type 2 diabetes mellitus control [MENDES, 2010]. Furthermore, these drugs do not prevent the development of this disease, consequently increasing the risks of microvascular and macrovascular complications. Conversely, there is considerable evidence that surgery can be an adequate tool to promote type 2 diabetes mellitus remission in patients who are unresponsive to clinical treatment. Gastric bypass surgery is one of the most popular bariatric surgeries in the world, but its effects on microvascular and macrovascular complications of type 2 diabetes mellitus have not been established. Specialists suggest that the rapid and uncontrollable decrease in blood glucose adds to the concern that the surgery may paradoxically cause exacerbation of microvascular complications [LEOW, 2005], whereas gradual improvement in blood glucose before gastric bypass surgery may prevent this paradoxical worsening, leading to an interruption of this process, or even retinopathy, nephropathy, and neuropathy remission. However, there are no studies comparing the results of these two types of treatment (clinical vs. surgical) in a similar population and assessing the development of microvascular complications of type 2 diabetes mellitus. Therefore, in order to clarify such doubts, it is necessary and extremely desirable to conduct a randomized controlled trial comparing gastric bypass with the best and most modern clinical treatment. Its findings could have a direct impact on hundreds of millions of diabetics by allowing the inclusion of surgical treatment as a safe and feasible therapeutic option for a significant portion of these patients.
The aim of this study is to compare the clinical outcomes of open-flap (OF) and flapless (FL) esthetic crown lengthening (ECL) for the treatment of excessive gingival display (EGD). It was hypothesized that the FL surgery would yield similar clinical results to the OF technique up to 12 months. Methods: A split-mouth randomized controlled trial will be conducted in 28 subjects presenting EGD. Contralateral quadrants will receive ECL using OF or FL techniques. Clinical parameters will be evaluated at baseline, 3, 6 and 12 months post-surgeries. The local levels of receptor activator of NF-КB ligand (RANKL) and osteoprotegerin (OPG) will be assessed by ELISA at baseline and 3 months. Patients' perceptions regarding morbidity and esthetical appearance will be also evaluated. Periodontal tissue dimensions will be obtained by computed tomography at baseline and correlated with the changes in the gingival margin (GM).
The purpose of this study is to compare the response to aspirin in the acute phase with the late phase of an acute coronary syndrome.