Found 64,920 clinical trials
Vascular Events In Patients Undergoing Same-day Noncardiac Surgery (VALIANCE) Study
The proportion of noncardiac surgeries performed as same-day surgery is increasing worldwide, with more complex surgeries being performed on higher risk patients in the outpatient setting. Little is known on the risk factors, incidence and prognosis of patients undergoing same-day noncardiac surgery. The main objective of this study is to …
A Study in Radiotherapy-related Nervous System Complications
Purpose: This observational study aims to evaluate the clinical manifestations, therapeutic effects, progress and prognosis in radiotherapy-related nervous system complications. OUTLINE: This is an observational clinical trial. Patients are enrolled and administrated with optimized clinical treatment. Blood, urine, stool, cerebrospinal fluid (CSF), imaging and other examinations, and scale assessments are …
Gait as Predictor of Dementia and Falls. The Gait and Brain Cohort Study
Motor slowing and cognitive slowing are more prevalent as we age. Importantly, the presence of both in an older person increases their risk of having dementia by ten times. Currently, there are no clinically meaningful predictors of progression to dementia in people with mild cognitive impairment (MCI). The main hypothesis …
The Organ Transplant Recipient HPV and Skin Cancer Study
Solid organ transplant recipients (OTRs) receive lifelong immunosuppressive therapy, which puts them at increased risk of cutaneous and mucosal cancers. In particular, OTRs have increased risk of skin cancer and cancers caused by human papillomavirus (HPV), including cervical cancer and oropharyngeal cancer. There is currently limited knowledge on risk factors …
Identification of Biomarkers for Patients With Vascular Anomalies
The study will use blood (serum and plasma) and tissue obtained from participants undergoing prescribed surgical resection of vascular anomalies of interest proposed in this study. The study will also use blood (serum and plasma) and tissue collected and stored in a tissue bank maintained by the Department of Hematology/Oncology.
Multicentric Study on Infections of the Urinary Tract After Stent Removal (MINUS-trial).
The MINUS-trial is a multicentric prospective observational study in which consecutive patients, 18 years of age and older who receive a ureteral stent during any endoscopic procedure will be approached to participate. Their stent will be removed in outpatient office or by string extraction at home with or without antibiotic …
A Natural History Study Seeks to Understand the Clinical, Genomic, Pharmacological, Laboratory, and Dietary Determinates of Pyrimidine and Purine Metabolism Disorders
Background Pyrimidine and purine metabolism disorders (DPPMs) affect how the body metabolizes chemicals called pyrimidines and purines. DPPMs can cause dysfunctions throughout the body, especially in the brain, blood, kidneys, and immune system. People with DPPMs might have no symptoms, mild symptoms, or they may have severe, chronic symptoms, that …
Response of the Myocardium to Hypertrophic Conditions in the Adult Population
Hypertension and aortic stenosis are the two leading conditions that cause thickening of the heart muscles (left ventricular hypertrophy). Left ventricular hypertrophy is initially adaptive to maintain optimal heart function. Ultimately, heart failure occurs as a result of progressive muscle cell death and scarring (myocardial fibrosis). Dedicated techniques using cardiovascular …
Kidney Cancer DNA Registry
This registry will help us develop better methods of: Preventing these cancers Diagnosing these cancers Treating these cancers
Natural History and Clinical Features of Amyotrophic Lateral Sclerosis (ALS)
Describe the distribution of ALS in mainland China, to explore the differences in the number of ALS in different times, regions and populations in order to further explore the causes affecting the distribution of ALS; To investigate the cause of ALS in mainland China in the crowd disease development process …
