View clinical trials related to Cognitive Dysfunction.
Filter by:The purpose of this study is to evaluate the efficiency and safety of a digital therapeutics(ET-101) for mild cognitive impairment (MCI). This is a randomized, sham-controlled, assessor-blinded, 24-week parallel study. 100 MCI patients will be randomly assigned to two groups. The control group will be provided with a sham device.
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.
In this study, patients with aged-related hearing loss with depression and without depression were evaluated by audiometry (pure tone audiometry and speech audiometry), cognitive function assessment (MMSE scale for simple mental state test, MoCA Scale for Montreal Cognitive Assessment), and depressive symptoms assessment (GDS-15 and HAMD), resting state EEG. The ananlysis of resting state EEG included power spectral density, traceability analysis, functional connectivity, microstate, clustering coefficient, characteristic path length, characteristic path permeability, and compatibility coefficient. EEG signals were used to explore the activation of brain regions and poor connectivity of brain regions affected by cognitive reserve dissonance on the level of brain imaging. This paper innovatively explores the influence of cognitive reserve dissonance on depressive mood in senile deafness by means of audiological assessment, cognitive function assessment, depression symptom assessment, resting state electroencephalography (EEG) and other technical means. Auditory and cognitive cortical activation, functional connectivity of brain regions, small-world attributes and microstates were analyzed in senile deafness with or without depression at the brain imaging level.
The investigators conducted a validation study for the Montreal Cognitive Assessment (MoCA)-XpressO compared to the digital-MoCA test (version 8.1) as the gold standard. Participants were recruited from the MoCA clinic and a family practice. Ethics approval was received, and all participants provided informed consent. A crossover study design was applied to the MoCA-XpressO and the digital-MoCA test; participants were randomized for the order of administration. The investigators only recruited participants who did not complete a MoCA test during the 3 months prior to the study. A logistic regression model was built, and the accuracy of the model was evaluated by the sensitivity, specificity, and area under the Receiver Operating Characteristic (ROC) curve.
Cognitive Stimulation Therapy (CST) is an evidence-based non-pharmacological group therapy shown to benefit people with mild to moderate dementia. Despite increasing availability of CST worldwide, access remains limited in the United States. This pilot pragmatic trial will embed CST referral into the standard care protocol of health care settings that serve people living with dementia in the state of Connecticut, and evaluate online delivery of CST known as virtual CST (V-CST), and assess the acceptability of V-CST to people living with dementia. The study design is a two-armed randomized embedded pragmatic clinical trial (ePCT). The trial aims to determine if cognitive decline is experienced less commonly among V-CST participants than control group members based on three widely used measures of cognition, the Montreal Cognitive Assessment (MoCA), St. Louis University Memory Screen (SLUMS), and Mini Mental State Exam (MMSE). The study population will be persons with mild to moderate dementia identified by clinicians in standard care. From this population, subject participants will be randomized to intervention and control groups. Patients randomly assigned to the intervention group will be referred by their clinical providers to participate in V-CST, and those who accept the referral will participate in the intervention.
The purpose of this study is to develop and test a comprehensive Brain Health Together program for older adults living with cognitive decline.
Dementia creates a great personal and societal burden and there are currently no treatments to stop memory loss. Many patients with dementia take medications to treat other conditions, e.g. high blood pressure and cholesterol. Some of these medications may have central effects on the pathophysiological processes leading to dementia. Medication repurposing is a cost and time-effective way to discover new treatments. Swedish registers are a unique tool to detect medication candidates for repurposing. The Swedish Dementia Registry (SveDem) has >100000 patients and ca. 144000 measures of cognition over time (measured with the Mini-Mental State Examination-MMSE), making it perfect to examine whether certain medications are associated with less cognitive decline in patients with dementia. Cholesterol and kidney function affect treatment and cognition and are available for 25000 patients. The investigators propose a study combining traditional cohort studies and newer artificial intelligence (machine learning) techniques to detect medications associated with slower cognitive decline in patients from SveDem. The investigators will test pre-specified hypotheses since the investigators suspect specific medications are better candidates to prevent cognitive decline, but the investigators will also let the machine learning algorithms explore the data to find associations that the investigators do not suspect in advance. Finally, the candidate medications will be tested in animal and cellular models to determine the mechanisms of their effects.
The purpose of this research study is to measure cerebrospinal fluid (CSF) clearance in subjects with and without high blood pressure. CSF cushions the brain from impact and carries waste products from the brain to the bloodstream. This process is known as clearance. Impaired removal of proteins from the aging brain causes their buildup and may contribute to an increased risk for Alzheimer's disease. It is also suspected that clearance may be related to the health of vessels carrying the blood throughout the brain. It is known that high blood pressure damages blood vessels and thus may impair clearance. In this project we will examine if having high blood pressure is related to impaired brain clearance and whether treating high blood pressure improves clearance and reduces buildup of Alzheimer's disease-related proteins. Participants will be asked to undergo a medical examination, testing of memory, brain imaging (both magnetic resonance and positron emission tomography, and spinal tap at the beginning of the study and 1 -2 years later.
Cognitive dysfunction is the impairment of mental process of perception, memory and information processing which allow the human to acquire knowledge and plan for the future . The etiology of Postoperative cognitive dysfunction (POCD) is unclear and seems to be multifactorial involving a combination of patient, surgical, anesthetic and environmental factors .It can be a manifestation of transient or permanent cerebral injury. While cognitive function tends to improve over months to years postoperatively in affected individuals, some proportion has seemingly permanent cognitive injury .
Mild cognitive impairment associated with movement disorders occurs in up to one third of patients in early stages of the disease, and confers an increased risk of developing dementia. Non-pharmacological interventions to improve cognition have so far been based on computer-based cognitive stimulation and rehabilitation programs. These interventions base their mechanism of action on neuroplasticity and how improvements in cognitive function will generalize to functional improvement. Despite having shown certain indicators of efficacy in previous exploratory studies and clinical trials, cognitive rehabilitation continues to show insufficient evidence and requires further study. To date, there are no previous studies using immersive virtual reality (IVR) to improve cognition. Both IVR and cognitive stimulation are based on the premise that they allow the simulation of ecological environments for rehabilitation than conventional rehabilitation, as well as being more efficient by allowing control of extraneous variables and providing safe spaces for patients. The only PD rehabilitation studies that have been conducted using IVR aimed to improve gait and balance disturbances compared to conventional physiotherapy treatment or non-immersive virtual reality (NIVR). We hypothesize that a cognitive rehabilitation program using IVR or computer-mediated cognitive stimulation could have a greater beneficial effect on the cognitive status of patients with cognitive impairment associated with movement disorders compared to other modalities such as music therapy, delaying the worsening of cognitive functions.