There are about 36818 clinical studies being (or have been) conducted in China. 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 proposed minimal diagnostic criteria for myelodysplastic syndromes (MDS) and potential pre-MDS conditions has been released by an international consensus group. Based on the criteria, patients with persistent cytopenia could be diagnosed with MDS, CCUS and ICUS. However, the process and outcome of pre-MDS conditions (CCUS, ICUS) is still to be characterized in Chinese population. We design this prospective observational study to explore the disease process and outcome in ICUS and CCUS patients.
The rationale of the ROSY-O study is to continue to provide study treatment for patients who have participated in a parent study with olaparib and who are continuing to derive clinical benefit from treatment at the end of such studies, as judged by the Investigator.
The precise planning of TIPS, especially individual selection of stent diameter, is a hot and difficult topic in the field. We have successfully developed a non-invasive technology to evaluate hepatic venous pressure gradient and portal pressure gradient based on three-dimensional modeling and fluid dynamics simulation. We propose the concept of virtual stent-based portal pressure gradient for the first time. With invasive pressure as reference, the accuracy of virtual stent-based portal pressure gradient will be evaluated in levels of animal experiments and clinical trials. The predictive value of virtual stent-based portal pressure gradient for individualized selection of TIPS stent diameter will be further assessed.
The fight against the spread of the 2019-nCoV epidemic has achieved some success in China, but the epidemic is far from over. A key factor making the epidemic under control in China is the government's call for social distance, which has led to few people going out for donation. As a result, the number of blood donors on the streets has been continuing to decline. The first urgent recruitment of blood donors had been implemented during the period from 30 April to 10 May via emergency recruitment SMS . This repeat trial has been designed to further confirm the results from the the first recruitment by comparing which information extraction frameworks would be more sensitive to blood donors in emergency situations.
This is a prospective, observational single-center study. The osteoporotic patients requiring pedicle screw fixation for lumbar degenerative diseases are prospectively enrolled and followed up. This study mainly focuses on the most common osteoporosis-related surgical complications, which are pedicle screw loosening and the failure of lumbar fusion. The global and local bone mineral density(BMD) are evaluated with DXA, vertebral CT Hounsfield units(HU) before the surgery. The mechanical strength of the bone mass within the screw trajectory is also measured with a customized device during the surgery. We explored the effect of BMD on the pedicle screw loosening rate and fusion rate. In addition, the patients undergoing lumbar fixation with conventional pedicle screws without the use of bone cement are compared with those undergoing the fixation augmented with bone cement. The objective is to offer more detailed clinical evidence to guide the use of pedicle screw augmentation techniques in osteoporotic patients.
Acute aortic syndrome (AAS) is a life-threatening condition. Inflammation plays a key role in the pathogenesis, development and progression of AAS, and is associated with significant mortality and morbidity. Understanding the inflammatory responses and inflammation resolutions is essential for an appropriate management of AAS. Twenty Chinese cardiovascular centers have collaborated to create a multicenter observational registry (named Chinese registry of Additive Anti-inflammatory Action for Aortopathy & Arteriopathy [5A]), with consecutive enrollment of adult patients who underwent surgery for AAS that was started on Jan 1, 2016 and will be ended on December 31, 2040. Specially, the impact of inflammation and anti-inflammatory strategies on the early and late adverse events are investigated. Primary outcomes are severe systemic inflammatory response syndrome (SIRS), multiple organ dysfunction syndrome (MODS), Sequential Organ Failure Assessment (SOFA) scores at 7 days following this current surgery. Secondary outcomes are SISR, 30-day mortality, operative mortality, hospital mortality, new-onset stroke, acute kidney injury, surgical site infection, reoperation for bleeding, blood transfusion and length of stay in the intensive care unit.
The purpose of this study was to explore the effects of uric acid control on stone recurrence and renal function in patients with calculi of hyperuricemia through a prospective controlled study.
The goal of this study is to explore the effects of transcutaneous vagus nerve stimulation(tVNS) on improving cognition in community-dwelling elderly people. The study will recruit 120 subjects. Participants will undergo baseline cognitive assessment, EEG and eye tracking. Participants will be randomized to tVNS group and sham group. All subjects will repeat the baseline assessments after 1st session, 5th session，10th session and within 3 days after 10th session.
At present, the elderly population in China has reached 241 million, and there are more than 20 million elderly surgical patients every year, accounting for about 25% of the surgical population. However, there is no research report on the anesthesia related risk factors of death of elderly patients in hospital. The purpose of this study is to analyze the perioperative data of multicenter database, and to explore the anesthesia related death risk factors of elderly patients with noncardiac surgery in the investigator's country, especially within 24 hours after surgery, so as to help improve the anesthesia management technology of elderly patients during surgery, improve the medical quality of perioperative period, and improve the prognosis of patients.
Although individualized or goal-directed approach has been advocated, a reliable index is still required to help monitor the volume status timely and efficiently. Dynamic indexes, such as pulse pressure variation (PPV) and stroke volume variation (SVV), have been shown to be clearly superior to more commonly measured static preload variables, such as pulmonary artery occlusion pressure (PAOP) and central venous pressure (CVP). The reliability of dynamic indexes in monitoring the volume status and predicting fluid responsiveness have been validated. Fluid optimization guided by SVV and PPV is beneficial to hemodynamic stability and can decrease mortality and reduce postoperative complications. However, the usefulness of dynamic indexes in elderly patients has not been previously investigated. This study aimed to evaluate whether dynamic indexes PPV and SVV can reliably predict fluid responsiveness in elderly patients, and to determine their thresholds in elderly patients.