View clinical trials related to Postoperative Delirium.
Filter by:The purpose of this study is to investigate the possible relationship of microRNA and postoperative delirium.
The Diagnostic and Statistical Manual of Mental Disorders, 5th ed. (DSM-5) describes delirium as a "disturbance in attention (i.e., reduced ability to direct, focus, sustain, and shift attention) and awareness (reduced orientation to the environment)". In addition, a "disturbance in cognition (e.g., memory deficit, disorientation, language, visuospatial ability, or perception)" occurs. Postoperative delirium (POD) usually develops in connection with a surgical procedure within the first five days after an intervention. Roughly 10-70% of all surgical patients above the age of 65 years are affected. POD places not only a burden to the patient and their families by increasing functional and cognitive damages, and increasing mortality, it also has a high impact on the health care resource utilization. A patient with POD often requires more intensive care, has a longer length of hospital stay, more complications, and often requires long-term care after being discharged from the hospital. All these aspects show the need for prevention of POD. There are various preoperative risk factors that influence the development of POD. Broad research has been done on this topic and shown that advanced age, cognitive impairment, depression and other psychopathologic symptoms, intake of psychotropic substances, sensory impairment like decrease in visual or auditory perception, impairment in daily life activities, dehydration, malnutrition, metabolic dysfunctions, urinary catheters, severity of disease and different comorbidities, such as chronic cardiac insufficiency, atrial fibrillation, or previous history of stroke or infections may favor the occurrence of POD. The incidence of POD is among the highest in cardiac surgery. The study was designed to assess predictors for POD after cardiac surgery. Study hypothesis is that some patient variables, scores and biomarkers are not only predictive of the incidence of POD but also of the severity of delirium-associated symptoms and duration of POD after cardiac surgery.
Patients undergoing transcatheter aortic valve implantation (TAVI) have distinctive characteristics: they are old, frail, with several co-morbidities and take multiple medications. Hemodynamic instability, cerebral embolism, sedation, general anesthesia and hospitalization in intensive care expose those patients to postprocedural delirium. Acute neurocognitive dysfunctions are associated with adverse outcomes in these population. The objective of this study is to determine the incidence of delirium and neurocognitive disorders in elderly patients after TAVI.
The purpose of this study is to find out whether postoperative delirium can be more properly prevented by the combination of determined preventive agents in past studies. Further on the investigators measure pre- and postoperative cortisol, neuron specific enolase (NSE) and S-100beta levels.
Postoperative delirium (POD) - a temporary state of confusion - is a frequent complication of surgery, which most commonly occurs in elderly patients. A tablet computer application that may assist preoperative risk screening for POD was developed at the University Hospital Basel in 2014. This study aims to investigate whether the computer program may assess the risk of a patient to develop POD.
The aim of this study is to compare the risk factors and the incidence of delirium following orthopedic surgery under the general or regional anesthesia in elderly patients.
The purpose of this study is to understand how elderly individuals regain their cognitive skills following general anesthesia. The investigators will compare an age stratified group of volunteers who will be evaluated with a series of cognitive tests and a functional MRI. The participants will then be administered general anesthesia for two hours. The investigators will then assess the participants using state of the art tools to determine when participants return to their cognitive baseline.
Postoperative cognitive dysfunction (POCD) describes a condition where cognitive functions such as attention, perception, concentration, learning, abstract thinking and problem solving are impaired postoperatively. These changes can be resolved after weeks and months. In some cases, changes are permanent.
The purpose of this study is to determine the incidence, long term outcome and factor related to postoperative delirium in elderly patients after non-cardiac surgery.
This study will examine the hypothesis that changes in the cognition (i.e. thinking and memory) after anesthesia and surgery are correlated with changes in markers of Alzheimers Disease in the fluid around the brain and spinal cord (i.e. cerebrospinal fluid, or CSF), and/or changes in brain connectivity. The investigators will also examine whether different types of anesthesia have different effects on these CSF markers of Alzheimers disease, or different effects on thinking and memory after anesthesia and surgery, or differential effects on the correlation between cognitive changes and CSF marker changes.