Active clinical trials for "Postoperative Cognitive Complications"

Postoperative cognitive dysfunction (POCD) is one of the common complications of cancer patients after operation with a 8.9%-46.1% incidence, which severely affecting patients' postoperative recovery, increasing the medical cost, affecting the social function of patients, reducing the quality of life and increasing the mortality. Surgical trauma and perioperative pain can induce systematic inflammatory response and release systematic inflammatory mediators, which can enter the central nervous system (CNS) and lead to CNS inflammatory. In order to prevent the development of POCD among elder patients, the discovery of effective interventions reducing perioperative pain and inflammatory response is important. Transcutaneous Electrical Acupoint Stimulation (TEAS) is a non-invasive alternative to needle-based electro-acupuncture (EA). It combines the acupuncture and transcutaneous electrical nerve stimulation (TENS) by pasting the electrode piece on the acupoint instead of sticking the needles on the skin. TEAS can trigger the release of endogenous neurotransmitters, releasing endogenous analgesic substances, such as endorphins. TEAS also can reduce the intraoperative anesthetic consumption, postoperative pain score, postoperative nausea and vomiting (PONV), and improve the postoperative recovery of patients. Recently, TEAS was found to improve the cognitive function of geriatric patients with silent lacunar infarction. However, the current TEAS mainly focus on intraoperative. The effect of perioperative TEAS on POCD is not clear. Here, the effect of TEAS on POCD in geriatric adults undergoing radical resection of gastrointestinal tumors under general anesthesia was investigated to determine whether TEAS can decrease perioperative pain or inflammatory response to prevent the occurrence of POCD and to find out the relationship among perioperative TEAS, inflammatory response, postoperative pain, and POCD preliminarily.

This study is designed to test the hypothesis that closed loop system reduces post operative cognitive dysfunction incidence 15 min after anesthesia more than desflurane, sevorane, total intravenous anesthesia manually guided by bispectral index in urologic surgical patients. The secondary aim is to evaluate the postoperative cognitive impairment in in elderly vs younger surgical patients.

This study aims to evaluate the possible effect of dexamethasone on prevention of cognitive dysfunction in the postoperative period of elderly patients undergoing to surgery under general anesthesia.

To investigate the effect of ultrasound-guided thoracic paravertebral nerve block on postoperative acute and chronic pain and cognitive function in elderly patients with thoracoscopic partial lung resection.

Post operative cognitive dysfunction (POCD) is recognized as a frequent complication after both cardiac and non cardiac surgery, affecting approximately 1/3 of the patients. The aim of this study is to examine the possible effect of the novel reversal agent sugammadex versus neostigmine/ atropine combination on cognitive function of adult patients after elective surgery during the early post operative period as well as at discharge.

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.

The purpose of this study is to determine whether preoperative administration of Rivastigmine prevents the incidence of postoperative delirium in patients undergoing major surgery as well as postoperative cognitive dysfunction.

Neuronal damage caused by neuroinflammation in patients undergoing major surgery is the most determinant factor of postoperative cognitive disfunction (POCD). Neuronal damage can be detected through the measurement of biochemical markers of brain damage. The aim of this study was to evaluate neuronal damage and its association with POCD during liver transplantations. After the approval of the ethics committee and patient consents, preoperative and postoperative cognitive functions of 33 patients undergoing liver transplantation (LTx) were measured using the Mini Mental Test (MMT) whereas simultaneous neuronal damage was evaluated through the measurement of S-100 beta (S100β), Neuron specific enolase (NSE) and Glial fibrillary acidic protein (GFAP) levels. As a result, there was no statistically significant difference between preoperative and postoperative MMTs. However, there was a statistically significant decrease in postoperative GFAP and a statistically significant increase in NSE compared to preoperative values. The decrease in S100β level was statistically insignificant. In conclusion, neuroprotective approaches in the investigator's anesthesia protocol protect patients from brain damage during liver transplantation and prevent the development of POCD, which was indicated by the insignificant change in MMT scores and S100β level and the significant decrease in GFAP. Since the significant increase in NSE levels during liver transplantations was deemed to might have been associated with causes other than neuronal damage, NSE should not be evaluated as a marker of brain damage in these operations.

Postoperative cognitive dysfunction is a well-recognized complication of surgery. The aim of the study is to investigate whether cognitive dysfunction is reduced by the use of modafinil as shown by neurocognitive testing.The treatment effects will be evaluated compared to placebo as well as a non-surgical group.

The purpose of this study is to investigate propofol versus sevoflurane anesthesia on the effects of early postoperative cognitive function in elderly patients with metabolic syndrome.