There are about 2320 clinical studies being (or have been) conducted in Chile. 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 aim of this study will be to evaluate the effect of reduced dentin etching time on the 6- and 12-months clinical performance of two universal adhesive systems used as etch-and-rinse application mode in non-carious cervical lesions (NCCLs). Materials & Methods: 140 restorations will be randomly placed in 35 subjects according to the following groups: SUP5 (Scotchbond Universal Plus adhesive on dentin etched for 5 seconds); SUP15 (Scotchbond Universal Plus adhesive on dentin etched for 15 seconds); GBU5 (Gluma Universal Bond adhesive on dentin etched for 5 seconds); GBU15 (Gluma Universal Bond adhesive on dentin etched for 15 seconds). All groups will be light-cured for 10s/1,000 mW/cm2. A resin composite will be placed by applying three increments and each one will be light cured for 20s/1,000 mW/cm2. The restorations will be finished immediately with fine diamond burs and polishers. The restorations will be evaluated at baseline and after 6- and 12-months by using the FDI criteria. The following outcomes will be evaluated: retention, marginal staining, marginal adaptation, post-operative sensitivity and recurrence of caries. The differences among the groups will be calculated using Friedman repeated measures analysis of variance rank (α = 0.05).
The study consisted of a non-randomized controlled clinical trial with measurements at baseline and at the end of a 16 week intervention. Participants will be assigned to the intervention or control group according to their own choice and convenience. A 4 arm split was performed where the Veg-Int group was composed of people on a vegan diet who participated in the intervention, the Veg-Con group was composed of people on a vegan diet who were part of the control group, the Omn-Int group was composed of people on an omnivorous diet who participated in the intervention, and the Omn-Con group was composed of people on an omnivorous diet who were part of the control group. The Veg-Int and Omn-Int intervention groups, participated in a physical exercise program in remote modality through a digital mHealth platform. During the 16 weeks of intervention, a total of 50 training sessions were carried out, distributed in three sessions per week, with a duration per session ranging from 40 to 50 minutes. The exercise program was designed and supervised by a physical education teacher and focused on strength training using body weight exercises targeting the major muscle groups, including upper body, lower body and abdominals. The platform recorded participants attendance and the time they spent on each exercise session. At the end of the sessions, participants had the option to evaluate and share their perception of effort during the workout through a Modified Borg scale (0-10). In addition, they were given the opportunity to communicate with the teacher via phone call, text message or e-mail, to receive feedback or raise doubts.
Protein supplementation is one of the main recommendations for regular endurance physical exercise (RT). In older people, the need for protein increases particularly in the face of physiological and pathophysiological changes associated with the loss of muscle tissue and function, so protein intake becomes more relevant in this population. Fermented dairy products such as yogurt, and especially those with an extra protein content, have increased their popularity and consumption in the national market. Their nutritional composition is of particular interest, given their amino acid profile and in particular their high Leucine content, which could be compared with the classic protein supplements recommended for muscle gain and recovery. Objective: To analyze the effect on body composition, lipid profile, physical condition and muscle functionality induced by the intake of high protein yogurts versus Whey protein together with a muscular resistance program in elderly people. Hypothesis: The intake of high protein yogurts will lead to equal or greater gains in muscle mass, physical condition and functionality than those obtained with the intake of Whey protein together with resistance training in elderly people.Methodology: 16 healthy, lactose intolerant free, older (60-75 years old) subjects will be recruited to perform 8 weeks of muscular resistance training (RT) 3 times per week, who will be randomly supplemented with high protein yogurt (PY) or Whey protein (WP). At baseline and at the end of the intervention, body composition will be assessed by DEXA, muscle strength, maximal oxygen consumption and lipid profile. Expected Results: The YPRT group is expected to achieve similar or greater increases in muscle strength, fat-free mass, lipid profile and decrease in fat mass than the WP group.
Hip fractures in individuals aged 60 and above pose significant challenges in terms of morbidity, mortality, and healthcare costs. While countries like the United Kingdom and Australia have optimized their healthcare systems for timely management of hip fractures, the situation in Chile presents distinct challenges due to its mixed healthcare system. This study aims to assess survival rates following hip fractures in Chile and identify associated risk factors using national databases from 2012 to 2018. A comprehensive analysis of 35,520 patients revealed that factors such as age, type of health insurance, access to surgery, and treatment in public hospitals significantly influence mortality rates after hip fractures. The study found that patients with hip fractures experience lower 5-year survival rates compared to the general population, particularly when affiliated with public insurance and treated in public institutions. Modifiable factors like delayed surgery and prolonged hospital stays contribute to increased mortality rates. The findings underscore the urgent need for optimized public health policies and healthcare delivery systems to enhance outcomes for hip fracture patients in Chile.Hip fractures in individuals aged 60 and above pose significant challenges in terms of morbidity, mortality, and healthcare costs. While countries like the United Kingdom and Australia have optimized their healthcare systems for timely management of hip fractures, the situation in Chile presents distinct challenges due to its mixed healthcare system. This study aims to assess survival rates following hip fractures in Chile and identify associated risk factors using national databases from 2012 to 2018.
The goal of this observational study is determine if reduced ventricular ejection fraction is a factor that determines a pro-oxidant imbalance in patients subjected to cardiac surgery with cardiopulmonary bypass. The main questions are: - 1. Preoperative reduced left ventricular function determines higher blood and atrial tissue oxidative stress in patients subjected to cardiopulmonary bypass - 2. Oxidative stress markers in atrial tissue of cardiac surgical patients with develop atrial fibrillation The main tasks participants will be asked to do is register the symptoms of arrhythmia and heart failure. Also, obtain a electrocardiographic register if any present palpitations or chest pain with clinical significance This study not present a comparison group.
Low back pain is a common musculoskeletal health condition in society. It is a leading cause of disability globally and has created a significant burden in terms of work disability and high healthcare costs. Studies on the treatment of combined therapies for non-specific low back pain are scarce, so it is not known in depth which intervention is the best for reducing pain. For this reason, the objective of this study was to evaluate and compare the effect of physical exercise plus dry needling versus physical exercise plus elastic bandage. For this, a randomized clinical trial was carried out with a total of 22 people, where pain was evaluated using the ENA scale and functionality using the Oswestry test. Participants received CORE stabilization exercises. CORE stability training has become a popular training trend and has begun to be applied in rehabilitation programs and sports medicine (1). The expected results of the study are that the group that receives the physical exercise intervention plus dry needling will have better results in reducing the pain and functionality variable, evaluated with ENA and Oswestry in 4 sessions.
Introduction: Type 1 diabetes is a chronic autoimmune disease with multifactorial etiology, resulting in partial or complete destruction of pancreatic β cells, leading to an absolute deficit of insulin and vital dependence on exogenous insulin. Treatment for type 1 diabetes (T1D) involves externally replacing the functions of pancreatic β cells through the administration of external insulin, aiming to achieve blood glucose levels close to normal ranges. Among the factors influencing postprandial glycemic excursions is the glycemic index (GI), defined as the potential of a food's carbohydrates to raise blood glucose. Many studies to date conclude that foods with a higher glycemic index (GI) result in a greater area under the curve in postprandial glycemia. Studies in children and adults with diabetes have reported that individuals with higher non-nutritive sweetener (NNS) consumption do not exceed the acceptable daily intake (ADI) limit in most cases. Regarding the effect of non-caloric sweetener consumption on appetite-satiety and postprandial glycemia in T1D patients, there is no available evidence. General Objective: To compare the effect of consuming a breakfast with and without sweeteners on postprandial glycemic response and appetite-satiety sensation in subjects with type 1 diabetes. Methodology: A prospective experimental study will be conducted with non-probabilistic convenience sampling over 2 months. Thirty-two adult volunteers with T1D using intensified insulin analog schemes or insulin pumps will be recruited. Nutritional assessment and a dietary survey will be conducted to determine the habitual consumption of non-nutritive sweeteners. Two breakfasts will be tested, one with and one without non-nutritive sweeteners (separated by 7 days). Additionally, a test with White Bread (as a standard food) will be conducted. Both the standard food and the breakfast will provide 50 g of available carbohydrates in each session. Subjects will administer rapid-acting insulin before ingestion according to their ratio and sensitivity. The glycemic index of each breakfast will be determined, and the glycemic response will be analyzed using capillary glucometry and continuous glucose monitoring, with each subject serving as their own control. Finally, appetite-satiety will be determined using a visual analog scale. One-way ANOVA and the t-student test will be used for statistical analysis. Statistical analysis will be performed using IBM SPSS Statistics v.22 (SPSS Inc., Chicago, Illinois). A p-value < 0.05 will be considered significant for each analysis. Expected Results: It is expected that the breakfast with non-nutritive sweeteners will induce a higher postprandial glycemic response, measured as a greater area under the curve in adult T1D subjects. Furthermore, it is anticipated that after consuming the breakfast with non-nutritive sweeteners, T1D subjects will experience increased appetite and reduced satiety.
This research focuses on studying the effects of a 12-week exercise program on the health of individuals at risk of heart disease. The program includes High-Intensity Interval Training (HIIT) and Muscle Endurance Resistance Exercise (ERE). The researchers aim to observe the impact of these exercises on physiological adaptability, physical capacity, cardiovascular risk factors, metabolism, body composition, and chronic pain. The participants will be inactive adults with a Body Mass Index (BMI) between 25 and 39.9, who are enrolled in a cardiovascular health program. Individuals with certain serious conditions, such as bone or heart problems, pulmonary diseases, cancer, or those who do not adequately understand instructions or Spanish, are ineligible to participate. Patients will be selected by the program team and divided into three groups: one will perform HIIT, another will engage in ERE, and a control group will continue their usual treatment. Participants will be assessed at different times: before starting, at 4 weeks, at 8 weeks, and at the end of the program. Various health aspects will be measured, including physical activity, quality of life, physical capacity, cardiovascular risk factors, metabolism, body composition, and pain level.
Implementing this protocol has its ethical justification in that patients with metastatic melanoma, once tumor invasion has reached beyond the lymph node barrier, cannot possibly be treated satisfactorily with traditional surgery methods, radiotherapy, or conventional available chemotherapy. The disseminated tumor is refractory to all standard treatments. Almost 100% of patients who develop distant metastases will die from their disease, either from complications or cachexia. Therefore, immunotherapy based on immunological stimulation with immunocompetent dendritic cells, added to immunological reinforcement with IL-2, can, according to the evidence emanating from ongoing clinical protocols, produce a prolongation of survival with better quality and, in some cases, with partial or total regression of the tumor. General objective: It is to study the clinical and immunological response of patients treated with vaccines based on autologous dendritic cells loaded with tumor antigens, derived from allogeneic melanoma extracts, in combination or not, with intercalated low doses of recombinant human interleukin 2 (rhIL2) PROLEUKIN ® (aldesleukin). MAIN SPECIFIC OBJECTIVE: - SAFETY: Safety in administering dendritic cell preparation; local and systemic toxicity estimation. Determination of adverse reactions such as fever, nausea, allergy, neurological and cardiovascular symptoms. Local toxicity in the administration area. - MEASUREMENT OF THE IMMUNE RESPONSE: Based on in vivo and in vitro parameters: - In vivo response: Measure the type IV Delayed Hypersensitivity (DTH) response. It consists of a crossover test in which the response is compared to tissue interaction in vivo between dendritic cells sensitized with tumor extracts and their respective control unloaded dendritic cells. - In vitro response: ELISPOT assays, measurement of IFN-γ gamma production in peripheral blood of treated patients. Compare the specific immune response after each cycle of therapy through measurement of IFN-γ production by tumor-specific CTL. Cytotoxic radioactive chromium release assays to measure anti-tumor response mediated by CTL and NK. ELISA assays for quantifying cytokines (IFN-γ, IL-10) in patient serum after each cycle of therapy.
The goal of this observational study is to evaluate the risk factors associated with incident HGD/GA in patients with CAG with or without IM who are enrolled in endoscopic surveillance, as well as to compare GA incidence according to the OLGA and OLGIM scales in patients 18 years or older. . The main questions it aims to answer are: - What risk factors are associated with incident HGD/GA in patients with CAG with or without IM? - What is the comparative HGD/GA incidence according to the OLGA and OLGIM scales?