Active clinical trials for "Postoperative Cognitive Complications"

Traditionally, general anesthesia is maintained with inhalational anesthesia (GAS), but there is a gap in knowledge regarding whether intravenous anesthesia (IV) can prevent deleterious postoperative outcomes in the geriatric surgical population. The goal of this clinical trial is to determine whether intravenous anesthesia (IV) leads to a decreased incidence of postoperative delirium (POD), postoperative cognitive dysfunction (POCD), and functional decline, and improved patient-reported outcomes (PROs) in older adults undergoing non-cardiac surgery when compared to the standard inhalational anesthesia (GAS). This single-center, 1:1 randomized, double-blind (patient & outcome assessor) clinical trial will compare inhalational vs. intravenous anesthesia on POD, POCD, functional status, patient-reported outcomes (PROs), and blood-based biomarkers in older patients undergoing elective, inpatient, non-cardiac surgery. Upon enrollment, 260 women and men ≥ 75 years undergoing elective noncardiac surgery under general anesthesia will be randomized to 2 groups: IV or GAS.

Patients over the age of 65 years are at increased risk for developing delirium after noncardiac surgeries, resulting in increased morbidity and mortality. The prevention of postoperative delirium has been classified as a public health priority. However, so far data regarding possible intraoperative interventions to reduce the incidence of postoperative delirium is very scarce. Due to the more rapid wash-in and wash-out times of desflurane as compared to sevoflurane or propofol it seems reasonable that desflurane might be beneficial for the prevention of postoperative delirium. Therefore, we evaluate the effect of maintenance of anesthesia using desflurane, sevoflurane or propofol on postoperative delirium in elderly patients undergoing moderate- to high-risk major noncardiac surgery.

Postoperative Neurocognitive Disorders are the most common neurological complications after major surgery, which are associated with higher increased mortality and morbidity in elderly patients undergoing major surgery. Until now highly effective intervention has not been established yet. Recent preclinical studies suggest mithochiondrial dysfunction may be linked to pathogensis of (postoperative delirium) POD and postoperative cognitive dysfunction (POCD). As Methylene blue(MB) is a mitochondrial protective agent and a safe drug with long history of clinical use, we propose that mitochondrial-targeted interventions may be useful to prevent POD/POCD in surgical patients.

Postoperative delirium (POD) and postoperative cognitive decline (POCD) can be observed after cardiosurgical interventions. Taken together, these postoperative neurocognitive dysfunctions contribute to increased morbidity and mortality and higher economic costs. Preoperative risk factors of postoperative neurocognitive dysfunctions, such as decreased neuropsychometric performance or decreased cognitive daily activities, can be interpreted as reduced cognitive reserve. The aim of this study is to build up cognitive reserves to protect against the development of POD and POCD through preoperative, home-based, cognitive training.

The aim of the study is to see whether the hypotension that develops during spinal anesthesia in cesarean section patients causes a decrease in the postoperative cognitive functions of the patient. If the results show a decrease in functions due to the effect of hypotension, it will be necessary to carry out aggressive prevention/treatment of hypotension in cesarean section patients.

Inhalation anesthesia is the most frequently used technique and is performed in around 70% of surgeries worldwide. Sevoflurane is the most frequently used halogenated anesthetic and is used in 2/3 of the cases. The anesthetic strength of inhalation agents was established in the classic work of Eger and colleagues who determined the minimum alveolar concentration (MAC) of an inhaled anesthetic at atmospheric pressure, necessary to prevent a motor reaction in response to a pain stimulus in 50% of patients. Agitation is a frequent anesthesia complications and it not only lengthens the period of post anesthetic awakening and need for advance monitoring of the patient, but may be a predisposing factor in the development of postoperative delirium (POD) and postoperative cognitive dysfunction (POCD) which are independent predictors of increased mortality, prolonged treatment in the ICU and hospital, and prolonged social adaptation of the operated patients.(The ability of the patient to serve themselves independently.). There is a fairly popular point of view that there is no specific prophylaxis or treatment of postoperative agitation. However, a variant of anesthesia induction with sevoflurane was recently proposed, which reduced the frequency of agitation in children from 24.7% to 4.4%. The technique consisted in interrupting anesthesia at the moment of loss of consciousness, awakening the patient and subsequently performing re-induction. Since this technique might be time consuming in the busiest period of a surgical theatre and not safe if performed with the airways still unsecured it is advisable to shift the Wash In/Wash Out procedure to the stage of awakening at the end of surgery.

The purpose of this study is to assess the feasibility of a randomized, double-blind, placebo-controlled pilot trial evaluating the effect of tropisetron on prevention of postoperative cognitive dysfunction in patients after cardiac surgery.

Previous studies did not reach a consensus on the influence of the type of anesthesiologic procedure and monitoring, during carotid thrombendarterectomy, on perioperative complications and cognitive outcomes. The aim of this study is the optimization of brain perfusion during the vascular carotid clamp using multimodal monitoring. We assume that standardized monitoring techniques and a better selection of cognitive tests will allow a more accurate assessment of subclinical cognitive deficits.

Postoperative agitation is a common complication in pediatric anesthesia, with an incidence ranging from 10% to 80%. Common surgical procedures in children include tonsillectomy, adenoidectomy, insidious penis prolongation and circumcision, etc. Postoperative delirium and agitation is a clinical emergency, and can have detrimental effects on the child's health. The primary clinical manifestations include disorganized movements, moaning, incoherent speech, confusion and paranoid characters, inability to be concentrated, and irritability, obstinacy or uncooperative; all these would increase the risks of falling out of bed, possible fractures, and all kinds of tube loss. These symptoms would sustain postoperative recovery significantly and pose a possible long-term neurological dysfunction. As a result, an extended hospitalization, elevated in-hospital mortality rate, escalated medical expenses, heightened risk of cognitive impairment, reduced quality of life, and increased incidence of postoperative complications. Traditional acupuncture has been shown to improve cerebral micro-circulation, correct energy metabolism disorders, alleviate chronic pain and regulate visceral function, lessen fatigue and modulate immune. Moreover, acupuncture is a simple, effective and safe therapy. Electroacupuncture therapy is produced and developed on the basis of acupuncture therapy, which has a regulatory effect on multiple systems of the body and can play a regulatory effect that is consistent with normal physiological regulation. Modern medicine believes that the anterior cingulate gyrus, hippocampus, and other regions of the limbic system are the possible center control of emotion and cognition. Electroacupuncture treatment can help accelerate the recovery of central nervous system function, which plays a protective role on the central nerve system, especially the brain, within 24-72 hours after electroacupuncture treatment. At the same time, electroacupuncture is beneficial to the recovery of immune function postoperatively, it can promote the release of central neurotransmitters and improve receptor activity, so as to play a role in postoperative analgesia, reduce the dosage of anesthetics, brain protection, neurological function rehabilitation, and so on. According to scientific research, it also posses a certain effect on the prevention and treatment of postoperative delirium. Sevoflurane is an inhale anesthetic which is widely used in clinics for pediatric general anesthesia. Due to the high incidence of postoperative delirium and agitation, it has been given rise to great concern on pediatric clinical anesthesia. In order to reduce delirium and agitation incidence, the investigators apply electroacupuncture in pediatric for sevoflurane combined with intravenous general anesthesia, aim to target a safe way to lessen postoperative brain complications on pediatric. This is a single-center experimental study that employs randomization, triple-blinding, and control study. Pediatric patients were randomly assigned to two groups, sevoflurane general anesthesia group (S group) and electroacupuncture group (E group), 40 patients, respectively. Anesthesia induction, maintenance, and monitoring be performed identically in both groups, the S group will not receive electroacupuncture treatment, the E group will receive electroacupuncture therapy. Electroacupuncture intervention will be performed by blinded acupuncture physicians, visitor who is blind to collect preoperative, intraoperative and postoperative data while visiting patients, data statisticians, who are blind to the intervention, data collection, conducted statistical analyses on the data electronically.

The aims of this research project are to evaluate whether global olfactory impairment is a reliable indicator of preoperative frailty and cognitive impairment, and whether it may predict postoperative neurocognitive disorders, morbidity and mortality in a population of older patients scheduled for elective intermediate- to high-risk elective surgery. We will measure preoperative global olfactory function (threshold, discrimination, identification) and evaluate whether olfactory impairment predicts preoperative frailty (using the Edmonton Frail Scale, the Clinical Frailty Scale and handgrip strength) and postoperative complications and mortality. We will address the question whether preoperative olfactory impairment may be associated with a preoperative cognitive impairment (through a neuropsychological test battery) and whether it may predict a decrease in postoperative neurocognitive function.