All clinical trials

Prospective Observational Multicenter Cohort. External validation of donor derived cell free DNA in Renal Transplantation. Assessing performance of dd-cfDNA as a surveillance tool and its association with clinical outcomes. Outcomes include formation of de-novo DSA, eGFR decline, performance of AlloSure dd-cfDNA in Allograft rejection.

The aim of this study is to evaluate the performance of dual-energy CT (DECT) in the diagnosis of acute bowel ischemia (ABI). ABI is a condition characterised by inadequate blood supply to portions of the intestine. ABI is a relatively rare condition, but is associated with a high mortality rate. DECT is an emerging field within radiology. Few reports have reported an increased conspicuity for ABI using DECT compared with conventional CT, which is the current preoperative golden standard. The investigators hypothesize that DECT increases conspicuity of ABI compared with conventional CT and that DECT image findings correlate with the intraoperative findings.

Evaluation of the role of Ultrasound Elastography in differentiation between benign and malignant lymph nodes and its additional information over the classic gray scale and color Doppler ultrasound.

This study has the aim to analyze intestinal expression of cellular stress molecules in patients with intestinal GVHD. Patients with colitis and patients without intestinal inflammation will serve as controls.

Rationale: Infection with severe acute respiratory syndrome coronavirus (SARS-CoV) 2 could result in endothelial dysfunction with increased risk of arterial thrombotic events by downregulating the expression of angiotensin converting enzyme 2 (ACE2). Endothelial function can be easily and non-invasively determined by carotid artery reactivity (CAR) testing. Objective: To investigate the predictive value of endothelial dysfunction, measured by carotid artery reactivity testing, for 1-year cardiovascular events in patients with past COVID-19 infection. Study design: A prospective observational longitudinal cohort study. Study population: Patients recovered from confirmed infection with SARS-CoV2. Main study parameters/endpoints: macrovascular endothelial function measured by carotid artery reactivity testing.

Follow-up study of Coronavirus disease 2019 (COVID-19) survivors has rarely been reported. We aimed to investigate longitudinal changes in the characteristics of COVID-19 survivors after discharge.

A prospective, longitudinal cohort study designed to follow-up on 500 Swiss military personnel who tested in 2020 for SARS-CoV-2 (regardless of whether positive or negative, but with a known test result). Participants are invited to undergo an intensive test battery to evaluate if they suffer COVID-19 sequelae. The testing will include evaluation of several body systems (cardio-vascular, pulmonary, neurological, ophthalmological, psychological and general) and male fertility in a voluntary subgroup. Immune markers and SARS-CoV-2 reinfection rates will also be evaluated. The study hypothesis is that SARS-CoV-2 infection causes a multi-system disease with sequelae detectable in a significant proportion of army recruits after infection with SARS-CoV-2.

It has been reported that among Asian non-glaucomatous, antihypertensive medications were associated with retinal nerve fiber layer and ganglion cell-inner plexiform layer thickness. In order to explore whether antihypertensive medications would influence the neuropathy among glaucomatous population, we designed a cross-sectional observational study to analyze the retinal status among glaucoma patients with use of antihypertensive medication.

This project is planned to be based on the medical insurance database collected by the China Health Insurance Research Association (CHIRA). As a national academic research institution, CHIRA collects medical insurance patient data, covering more than 20 provinces across the country. The data of more than 60 municipalities, provincial capitals, and prefecture-level cities are unique and authoritative in my country. Based on the CHIRA database, big data analysis for Chinese sports medicine patients, starting from the names of medical institutions, admission/discharge diagnosis and classification of medical items, etc., to investigate the development trend of arthroscopic surgery in China and understand my country's arthroscopic diseases The distribution characteristics and changing trends of the quantity.

Over the past 10 years, there has not been a consensus on ICU nursing management based on the concept of injury control. Case management for patients with serious trauma continues to be initiated in general services and after discharge.There is no critical care unit case management strategy for the high-risk population following acute intake. Consequently, there is an urgent need to develop and enhance ICU nursing best practice after injury control.