There are about 3194 clinical studies being (or have been) conducted in Portugal. 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.
In case of severe ankle arthritis, the two common surgical treatments are tibiotalar arthrodesis and total ankle arthroplasty. Few studies have compared these treatments and it remains difficult to determine which operation is the better solution for end stage ankle arthritis. The purpose of the present study is to analyze patient's outcome after each type of ankle surgery and to describe the decision making process.
The purpose of this study is to analyse if a multidisciplinary approach including peers is effective in the treatment of obesity in adolescence.
The purpose of this study is to evaluate choroidal thickness and volume during the third trimester of pregnancy by comparison with a group of age-matched non-pregnant healthy group of women
Patients will be randomized to receive open-label (honestly described placebo) immediately at baseline or be eligible to receive the open-label treatment three weeks after the baseline measurements. Therefore all patients will be eligible to receive open-label placebo treatment for their chronic low back pain during the course of the study.
The primary objective of this study was to evaluate the efficacy of roxadustat compared to darbepoetin alfa in the treatment of anemia in nondialysis-dependent chronic kidney disease (NDD CKD) participants.
Metabolic syndrome (MS) is a cluster of risk factors for cardiovascular disease with increasing prevalence worldwide and insulin resistance is central to its pathophysiology and multi-organ deleterious effects. One of the most affected organs, the heart, undergoes a remodeling process with an increase in fibrous tissue that impairs global cardiac function. Considering that myocardial fibrosis increases myocardial stiffness, one important determinant of diastolic function, it probably contributes decisively to subclinical left ventricular diastolic dysfunction (DD) and heart failure with preserved ejection fraction in patients with MS. Since insulin resistance is a dominant player in the pathophysiology of MS, improvement of the metabolic profile of these patients with metformin might be associated with favorable remodeling of myocardial structure and an improvement in myocardial function. Metformin is a widely used drug to treat type 2 diabetes mellitus and is considered an option in the treatment of high-risk non-diabetic patients with MS, in addition to lifestyle counseling including a healthy diet and physical activity. In this way, we aim to: i) assess if treating non-diabetic patients with MS and DD with metformin in addition to lifestyle counseling decreases cardiac fibrosis and improves diastolic function and assess its impact in functional capacity and health-related quality of life (HRQoL); ii) evaluate if biomarkers of cardiac remodeling and inflammation are predictive factors of response to metformin treatment in these patients. This is a prospective, randomized, open-label, blinded-endpoint (PROBE) trial (scheduled follow-up of 24 months) with 2 arms: lifestyle counseling only and lifestyle counseling plus metformin (maximum dose of 1000mg twice daily). The primary endpoint will be change in change in mean of septal and lateral early diastolic mitral annular velocities (E') (at the end of the 24 months of follow-up). The secondary endpoints will include a composite of major cardiovascular events; diastolic function parameters at rest; plasma levels of insulin, glucose, insulin resistance index, NTproBNP, high-sensitivity C-reactive protein, tumor necrosis factor-α (TNFα), tissue inhibitor of matrix metalloproteinase type 1 (TIMP1) and growth differentiation factor-15 (GDF-15); functional capacity; epicardial, pericardial and abdominal adipose tissue volumes, and coronary calcium score; HRQoL.
The purpose of this study was to generate 16-week efficacy data, as well as up to 3-year efficacy, safety and tolerability data in subjects with active AS despite current or previous NSAID, DMARD and/or anti-TNF therapy.
This global, multicenter, open-label, randomized, controlled study evaluated the efficacy and safety of atezolizumab (an anti-programmed death−ligand 1 [anti-PD-L1] antibody)compared with docetaxel in participants with locally advanced or metastatic non-small cell lung cancer (NSCLC) after failure with platinum-containing chemotherapy. Participants were randomized 1:1 to receive either docetaxel or atezolizumab. Treatment may continue as long as participants experienced clinical benefit as assessed by the investigator, i.e., in the absence of unacceptable toxicity or symptomatic deterioration attributed to disease progression.
The main purposes of this randomized cross-over trial are to test if a 3h/day reduction of time spent in sedentary behaviour (SB) through breaking up hourly and shifting it for standing and walking behaviours would substantially increase total (TEE) and PA energy expenditure (PAEE) compared to a week of habitual prolonged SB, in male and female overweight/obese inactive (which do not attained MVPA recommendations) and sedentary desk workers. Specifically using an experiment design our main aims are: a) to determine the impact of reducing SB on TEE and PAEE; b) to analyse the independent effects of interrupting SB through breaks and the overall reduction in SB on TEE and PAEE; c) To analyse the determinants for the overall reduction in SB; d) If the changes occurred in TEE and PAEE were dependent on specific covariates.
The purpose of this observational study is to further evaluate the safety and performance of the EnligHTN™ Renal Denervation System in the treatment of participants with uncontrolled hypertension in clinical routine practice.