View clinical trials related to Covid19.
Filter by:An estimated 22% of the global population is at an increased risk of a severe form of COVID-19, while one in four coronavirus patients admitted to intensive care unit will develop a pulmonary embolism. A major public health question remains to be investigated: why COVID-19 is mild for some, critically severe for others and why only a percentage of COVID-19 patients develop thrombosis, despite the disease's proven hypercoagulable state? Patients' intrinsic characteristics might be responsible for the deep variety of disease forms. Our study aims to assess the validity of the hypothesis according to which underlining genetic variations might be responsible for different degrees of severity and thrombotic events risks in the novel coronavirus disease. Moreover, we suspect that prothrombotic genotypes occuring in the genes that encode angiotensin-converting enzyme (ACE-DEL/INS) and angiotensinogen (AGT M235T) are involved in the unpredictable evolution of COVID-19, both in terms of severity and thrombotic events, due to the strong interactions of SARS-CoV-2 with the renin-angiotensin-aldosterone system (RAAS). Therefore, we also aim to assess the validity of the theory according to which there is a pre-existing atypical modulation of RAAS in COVID-19 patients that develop severe forms and/or thrombosis. Our hypothesis is based on various observations. Firstly, there is a substantial similarity with a reasonably related condition such as sepsis, for which there is a validated theory stating that thrombophilic mutations affect patients' clinical response. Secondly, racial and ethnic genetic differences are responsible for significant dissimilar thrombotic risks among various nations. Thirdly, an increase in stroke incidence has been reported in young patients with COVID-19, without essential thrombosis risk factors, favoring the idea that a genetic predisposition could contribute to increase the thrombotic and thromboembolic risk. Fourthly, the plasminogen activator inhibitor (PAI)-1 4G/5G inherited mutation was found to be responsible for a thrombotic state causing post-SARS osteonecrosis.
The proportion of asymptomatic carriers of SARS-CoV-2 remains elusive, so the potential benefit of systematic screening during the SARS-CoV-2-pandemic is controversial. We investigate the proportion of asymptomatic inpatients who were identified by systematic screening for SARS-CoV-2 upon hospital admission. Adult patients admitted to the University Hospital Basel from 01.04.-14.06.2020 were routinely tested for SARS-CoV-2 within 72 hours of admission by nasopharyngeal swabs. Each patient screened during the study period was retrospectively classified symptomatic or asymptomatic for COVID-19 based on medical chart review.
In this study, clinically cured patients with severe COVID-19 were used to evaluate the therapeutic effect of COVID-19 and the recovery and health status of patients over time with highly sensitive PET/CT imaging technology. At the same time, PET/CT whole body scan, dynamic imaging and mathematical dynamic model were combined to evaluate the functions of the heart, lung, liver, kidney, brain and other important organs and the outcome of inflammatory lesions in clinically cured COVID-19 patients.
Effectiveness of the use of Tenofovir/Emtricitabine in addition to personal protective equipment for the prevention of the transmission of SARS-COV-2 to health care personnel. A Randomized Clinical Trial. This is an experimental study whose aim is to evaluate the effectiveness of a drug to prevent infection with the virus that causes COVID-19 (SARS-CoV-2), in health care workers. The drug under study is Tenofovir /Emtricitabine, a well-known antiretroviral, which is safe and is used as prophylaxis and treatment for HIV and other viral infections such as Hepatitis. Several laboratory-based studies indicate that this drug has the potential to inhibit SARS-CoV-2 replication. In addition, one study in HIV infected persons found that those taking Tenofovir /Emtricitabine tended to have a lower occurrence of COVID-19. In this study, we will compare the occurrence of infection with SARS-CoV-2/ COVID19 in health care workers between those assigned to an intervention group and those assigned to a control group. The intervention group will receive Tenofovir /Emtricitabine during 60 days in addition to the use of personal protective equipment (PPE), and the control group will receive a placebo during 60 days in addition to the use of personal protective equipment (PPE). The study will recruit 950 health professionals above 18 and less than 70 years, working in the emergency room, COVID wards and intensive care units of seven hospitals in Colombia. To make the comparison groups very similar, the participants will be assigned through a random mechanism to either the intervention (475), or the control (475) groups. In order to prevent biases in the evaluation of the results, neither the participants nor the clinical investigators, data managers, analysts and support personnel will know which intervention the participants are receiving. To determine the occurrence of infection with the virus the study will use both molecular tests that detect the presence of viral genes in respiratory secretions, and serological tests that detect the response of the immune system to the virus. The study will evaluate also the safety of this drug determining the occurrence of adverse events.
Hypothesis: Serum Vitamin D (25(OH)D) is significantly lower in severe versus non-severe COVID-19 infections and that this is a function of ethnicity. There is an association between vitamin D status and various cytokines (pro-inflammatory molecules). The primary objective of this research is to provide a snap shot of vitamin D status in patients from the South-East London area by age, sex, ethnicity and BMI and demonstrate ethnic differences in vitamin D status as well as its associations with severe vs non-severe COVID-19 infections. The secondary objective is to determine if there is an association between vitamin D status and various cytokines (pro-inflammatory molecules) and severity of disease.
A) Comparing the % of change in each clearances of pro-, and anti-inflammatory mediators (cytokine, chemokines and complement) in the COVID-19 patients treated with CytoSorb as compared to the same patient population who do not receive blood purification treatment. B) Testing the Cytokinetic model by measuring cytokines in the blood stream and in the BAL to see if you can create a reverse gradient allowing a massive passage of leucocyte from the blood toward the infected lungs.
CORONA is a retrospective, observational, one center study to investigate the clinical evolution (in terms of survival and thromboembolic complications) of patients on chronic treatment with anticoagulants or antiplatelet agents who are admitted to the hospital for COVID-19 compared with patients who do not receive anticoagulants or antiplatelet agents.
Drug studies often look at the effect one or two drugs have on a medical condition, and involve one company. There is currently an urgent need for one study to efficiently test multiple drugs from more than one company, in people who have tested positive for COVID-19 but who do not currently need hospitalization. This could help prevent disease progression to more serious symptoms and complications, and spread of COVID-19 in the community. This study looks at the safety and effectiveness of different drugs in treating COVID-19 in outpatients. In Phase II, participants in the study will be treated with either a study drug or with placebo. In protocol version 7.0, participants in Phase III of the study will be treated with either a study drug or active comparator drug. Participants assigned to the bamlanivimab agent/placebo arm and will have 28 days of intensive follow-up following study drug administration, followed by limited follow-up through 24 weeks in phase II and in phase III. All other investigational agents and their corresponding placebo arms will involve 28 days of intensive follow-up, followed by limited follow-up through 72 weeks in phase II and phase III. Additional study visits may be required, depending on the agent.
In patients with SARS-CoV-2 or bacterial infection admitted to the intensive care unit (ICU), the state of the intravascular volume, the characteristics of the blood volume components, and the development of a vascular leak is currently unknown. The relationship of these parameters with parameters of cardiac performance, lung edema and sublingual microcirculatory perfusion parameters have never been studied.
Severe pneumoniae related to Coronavirus Disease (COVID-19), had a high in-hospital mortality; this condition are worst in subjects with acute kidney disease (AKI); conditioning increased mortality, days of assisted mechanical ventilation (AMV), increased nosocomial infections and high costs. We need many studies for determinated the risk factors for AKI in subjects with COVID-19. This study pretends identify the incidence of AKI in subjects with severe pneumoniae by COVID-19, describe the role of some biomarkers in the physiopathology of AKI-COVID-19; and determine the evolution of urinary biomarkers during hospitalization, like neutrophil gelatinase-associated lipocalin (NGAL), tissue inhibitor of metalloproteinases-2 (TIMP-2), insulin-like growth factor binding protein-7 (IGFBP7), and interleukin-6 (IL-6) and the progression of viruria of Severe Acute Respiratory Syndrome (SARS) related to CoronaVirus 2 (CoV2) in subjects with or without AKI.