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.
It is necessary to generate more evidence on the outcome of contemporary protocols for full-arch rehabilitations supported by implants in immediate function in areas with limited quantity and density bone. This research project aims to investigate the outcome of fixed prosthetic restorations supported by implants in immediate function for full-arch rehabilitation through the All-on-4 concept contemporary protocol, specifically: implant survival and success, prosthetic survival, marginal bone level and marginal bone level changes, soft tissue health parameters (Plaque index, Bleeding index, Pocket depth), incidence of biological and mechanical complications. A prospective cohort study design will be used in the investigation. The sample of this study is estimated to consist in 43 patients rehabilitated with full-arch fixed prosthetic rehabilitations supported by implants in immediate function (All-on-4 concept) with 144 dental implants. The cohort will be evaluated between baseline and 3 years of follow-up.
The purpose of this study is to assess the safety of rifampicin given at a dose three times as the standard one, in persons with tuberculosis that belong to groups that have not been widely included in previous trials.
Introduction: Traditionally, White Light Endoscopy (WLE), enhanced by biopsies following the updated Sydney system guidelines, has been the benchmark for diagnosing and classifying gastric preneoplastic conditions. Nevertheless, the pronounced interobserver variability and the often weak correlation between endoscopic observations and histopathological results have driven the increasing adoption of virtual chromoendoscopy (VCE). VCE technologies have demonstrated greater effectiveness in identifying these conditions compared to WLE, with Narrow Band Imaging (NBI) being particularly notable. Significantly, NBI has played a key role in validating the Endoscopic Grading of Gastric Intestinal Metaplasia (EGGIM) system. However, data on the effectiveness of other VCE technologies in this domain is relatively sparse in Europe, specifically with Blue Light Imaging (BLI), despite the promising diagnostic performance demonstrated with this technology. Primary aim: to assess the diagnostic accuracy of BLI and to externally validate the applicability of EGGIM classification for staging GIM. Material and methods: a multicentric cohort study will be performed involving centres from two European countries (Portugal, Italy). Consecutive patients performing upper gastrointestinal endoscopy will be evaluated by WLE and BLI. Random biopsies or targeted plus random biopsies will be performed in order to determine de accuracy of BLI system to detect and stage GIM. Expected results: We anticipate that BLI would enable us to assess the extension of GIM without the need for biopsies. If observed, this would overall improve the upper GI endoscopy accuracy.
This study is a prospective, observational, non-interventional, multicenter, open-label, single arm study in patients being treated for nAMD with brolucizumab in Portugal.
This is a multiple dose, randomized, placebo-controlled, double-blind study of belcesiran to evaluate the safety, tolerability, PK, and PD in adult patients with PiZZ AATD-associated liver disease (AATLD). The study will be conducted in 3 separate cohorts. A total of up to 16 participants may be enrolled in Cohort 1 and 2. A total number of 30 subjects will be enrolled in cohort 3. The 3 cohorts are differentiated by the duration of the treatment period, the number of doses administered, and the timing of the second liver biopsy.
This study aims to characterize the clinical management and outcomes of participants diagnosed with anaplastic lymphoma kinase (ALK)-positive advanced non-small cell lung cancer (NSCLC) who are being treated with alectinib in real-world clinical practice.
The primary purpose of this study is to further characterise the hepatotoxicity in participants with advanced or unresectable hepatocellular carcinoma (HCC) treated with lenvatinib, and to further characterise the overall safety profile (serious adverse events [SAEs], grade 3 to 5 adverse events [AEs], dose modifications and discontinuations due to AEs) in participants with advanced or unresectable HCC treated with lenvatinib.
Early fetal growth restriction (FGR) is associated with considerable fetal and neonatal morbimortality (Miller et al. 2008, Nardozza et al. 2017). Placental thrombosis, infarcts and hypercoagulability are frequently seen in these pregnancies, suggesting a role for the activation of the coagulation cascade in the genesis of FGR. Patients will be randomized for low-molecular weight heparin or standard of care, and the outcomes of both arms (gestational age at delivery, gestational and fetal morbidity) will be compared.
Many clinicians continue to rely on subjective evaluation in making decisions about the adequacy of neuromuscular function before tracheal extubation rather than using quantitative monitoring. The aim was to compare the sugammadex dose as suggested by senior anaesthesiologists (SSD) based on clinical experience versus the dose determined by quantitative monitoring (QSD) to determine if the subjective dose was appropriate.
The therapeutic use of caloric restriction and intermittent fasting (IF) protocols improves life span and health related quality of life. The effects of fasting protocols on athletic performance and training adaptations have been primarily studied in athletes undergoing the Ramadan IF protocol or in athletes willing to decrease body fat, while maintaining or increasing lean body mass. Data from these studies are somewhat conflicting and unclear. Moreover, the effects of IF on muscular strength, as well as in aerobic and anaerobic capacity remain largely unknown. Anecdotal evidence from experienced participants in strength, power and endurance training or sports, indicates an increased ability to acutely display higher levels of work capacity in the fasted vs. fed state. The goal of this project is to determine the effects of 4 wks of IF on neuromuscular performance, aerobic and anaerobic capacity of well-trained young adults.