View clinical trials related to Cognitive Dysfunction.
Filter by:The purpose of this study is to investigate the effect of digital cognitive training in the functionality of older adults with Mild Cognitive Impairment.
Assessment of cognitive function in patients undergoing elective carotid endarterectomy Classical treatment for ICA stenosis is carotid endarterectomy (CEA), which has been proven effective in preventing future stroke as well as improving cerebral perfusion. However, the influence of CEA on cognition is less defined, it remains unclear whether CEA can improve cognitive function. A change in cognition is one of the most threatening diseases of recent years, cognitive impairment significantly impacts patients, families, and healthcare system. The difference in the cognitive outcome may be accounted for microembolic events and adverse changes in haemodynamic circumstances. The aim of our study is to identify those factors what may have role in the postoperative cognitive decline. The study was approved by the Ethical Committee of the university ( SE RKEB: 17/2019) and written informed consent will be obtained from all patients. The investigators intend to enroll patient aged more than 18 years undergoing elective carotid endarterectomy at our hospital ( Semmelweis University Heart and Vascular Center). Exclusion criterion included young age (less than 18 years), incapacity and urgent surgery. The investigators would like to register at least 100-150 patients in our study. Most relevant anamnestic dates, the results of the laboratory and radiological reports will be recorded. Cognitive functions will be assessed one day before, one day and six month after the surgery using MMSE and a questionnaire called Frailty to characterize beside cognitive function the physiological reserve of the patients too. The investigators manage patients undergoing carotid endarterectomy with general anaesthesia, using inhaled or total intravenous agents. During the operation the investigators record beside the routine monitoring (intraarterial blood pressure, ECG, oxygen saturation, EtCO2, MAC) the cerebral tissue oxygen saturation using a near-infrared cerebral oximeter (Invos Cerebral/Somatic Oximeter) and the activity of the brain using GE Entropy Module. The investigators would like to register the changes in the haemodynamic and cerebral condition and compare these results against the clinical outcome and the changes of the questionnaires. Statistical analyses will be performed using Statistical Package for the Social Sciences.
Purpose: This randomized, double-blind, placebo-controlled clinical trial aims to evaluate the therapeutic effects of donepezil in radiotherapy-related cognitive impairment. Further study details as provided by Sun Yat-sen Memorial Hospital, Sun Yat-sen University / Yameitang. Primary outcome measure: cognitive improvement, which is determined by the difference value of ADAS-cog score before and after the treatment of donepezil.
This study evaluates the effect of 5Hertz (Hz) repetitive Transcranial Magnetic Stimulation (rTMS) on Left Dorsolateral Prefrontal Cortex enhancing Cognitive Stimulation in Mild Cognitive Impairment.
Mild cognitive impairment (MCI) is distinguished from healthy aging by cognitive difficulties that are greater than expected for one's age and education. Amnestic mild cognitive impairment (aMCI) is a major sub-type of MCI with noticeable impairments in memory. Approximately 12% of aMCI will progress to AD per year. There are two test to evaluate the effects on memory, but both without Chinese version. This study is to know the test-retest reliability of the Chinese version of the Verbal learning test and Selective reminding test among people with mild cognitive impairment.
Dexmedetomidine is a highly selective α2adrenoceptor agonist recently introduced to anesthesia that produces dose dependent sedation, anxiolysis, and analgesia (involving spinal and supraspinal sites) without respiratory depression. From a pharmacokinetic perspective,dexmedetomidine has a half life of nearly 2 hours, duration of action of nearly 4 hour, and thus, a side effect profile that is shorter in duration than clonidine. Esmolol is a cardioselective beta₁ receptor blocker with rapid onset, a very short duration of action (elimination half-life is approximately 9 minutes) , and no significant intrinsic sympathomimetic or membrane stabilising activity at therapeutic dosages
The prevalence of Vascular Cognitive Impairment(VCI) is high in patients after ischemic stroke or transient ischemic attack(TIA) . Effective therapy for the prevention of VCI remains limited. The primary purpose of this study is to evaluate the efficacy and safety of Ferrous iron versus placebo on the prevention of vascular cognitive impairment among patients with ischemic stroke/TIA complicated with Hemoglobin deficiency.
Vascular brain infarction (VBI) occurs in 67% of patients undergoing TEVAR. Overt stroke occurs in 13% of these patients and 88% of patients suffer from neurocognitive impairment. Cerebral air embolisation during the stent-graft deployment phase of TEVAR may be a cause of VBI. Standard treatment to de-air stent-grafts is through the use of a saline flush. This study aims to investigate whether carbon-dioxide or saline is the better fluid to de-air TEVAR stent-grafts prior to insertion in to the patient and compare VBI rate in the carbon-dioxide group and saline group.
Alzheimer's Disease (AD) is characterized by amyloid-β (Aβ) plaque buildup and phosphorylated tau (p-tau) in the brain, as well as widespread neurodegeneration. Amyloid-β and tau are proteins that build up in the brain that may contribute to memory problems. The evidence suggests that both amyloid and tau play a critical role in AD and interventions that reliably and safely decrease the intracerebral burden of amyloid or tau could potentially be of marked clinical importance. Currently, therapeutic options are very limited and while there are pharmacologic interventions that transiently improve cognitive function, there are no treatments that alter disease progression. The purpose of this study is to see if multiple daily sessions of non-invasive brain stimulation can affect brain activity to decrease the amount of amyloid and tau in people with AD as compared to Sham (placebo) stimulation. The type of brain stimulation that will be used is called transcranial alternating current stimulation (tACS). This study will investigate different doses of tACS (2-4 weeks) and assess safety. The hope is that tACS will decrease the amount of amyloid and tau and improve memory and thinking in people with AD.
The aim of this study is to explore the relationship between cortical hyperexcitability, abnormalities of brain network function, and cognitive dysfunction in human patients with AD and whether administration of the antiepileptic medication levetiracetam (LEV) normalizes these measures and improves cognition.