Active clinical trials for "Cognitive Dysfunction"

The study was a prospective cohort study to assess the effect of age, duration of anesthesia, repeated surgery, and type of surgery on cognitive impairment in 108 geriatric patients (≥60 years) who underwent general anesthesia for non-neurologic noncardiac surgery.

Even at the disease onset, about 70% of patients with multiple sclerosis (MS) suffer from cognitive impairment that impacts quality of life. Currently, some speed processing tests are used, such as SDMT ( symbol digit modalities test ), CSCT (information treatment speed evaluation) and WAIS-IV (Weschler Adult Intelligence Scale ). Their inconvenient are the improvement of scores in test-retest, and some difficulties doing the tests due to motor or visual impairment that might be reported. The XO test is fast, cheap and easy to use during medical consult by neurologists. It seems to be correlated to results of speed processing tests, and probably to some executive functions tests too. Asthenia, anxiety, depression and pain are likely to have a negative influence on tests results. Screening every patients with a short test aims to detect patients with cognitive impairment earlier. After a positive screening test, and to better characterize cognitive impairment, they will undergo a neuropsychological test battery. Depending on the alteration, adapted workstation, financial support, technical and human helps will be implemented in order to improve the daily-living of patients. This study aims to approve the XO as a screening test of cognitive impairment in MS patients. We will study the relationship between XO test, and SDMT, CSCT, WAIS-IV, and also with questionnaires about pain, asthenia (FSS, Fatigue Severity Scale), anxiety and depression (HAD, Hospital Anxiety and Depression ). The XO test will be standardized using a healthy population.

The purpose of this study is to evaluate the effects of SMR neurofeedback training on cognitive performance and electrical brain activity in elderly with cognitive impairment.

Epilepsy is a common health problem worldwide. In general population, studies in developed countries estimated the annual incidence of epilepsy to be~50 per 100,000 and prevalence to be ~8.2 per 1,000. These figures are higher in developing countries in which prevalence of >10 per 1,000 was reported. In Upper Egypt, Assiut Governorate, the prevalence rate was 12.9 per 1,000. In people with epilepsy there is an associated high rate of cognitive difficulties that compromise educational progress and achievement throughout life. Approximately 1-5% of the population exhibits epileptiform discharges on electroencephalography (EEG). Interictal epileptiform discharges (IEDs), meaning spikes, polyspikes, sharp waves, or spike and slow-wave complexes without observed clinical seizures, are commonly observed in patients with epilepsy. Epilepsy syndromes manifesting with IEDs are detrimental to cognitive function. Recently, two studies found that frequent IEDs can impair cognitive performance in children. and adult patients. Several studies indicated that IEDs in patients with epilepsy had a disruptive effect on information processing speed with even a low percentage of IEDs (1%).However, it is unclear whether IEDs are associated with disrupted academic performance in patients with idiopathic epilepsy, and the relationship between general cognitive ability and academic performance in those patients has not been clarified. Understanding how IEDs interfere with neurocognitive outcomes is important ,while the goal of medical and surgical treatments for epilepsy is to achieve seizure-freedom with minimal morbidity, the benefits of IED suppression are more controversial.

Purpose of clinical trial; This clinical trial is designed to evaluate the effectiveness of 'NeuroAI' prediction accuracy compared to the amyloid PET test results by retrospectively collecting medical data of patients with mild cognitive impairment to evaluate the effectiveness of artificial intelligence-based brain image detection and diagnosis assistance software 'NeuroAI'. Participants; Patient with mild cognitive impairment

There is lack of attention to preoperative cognitive function and delirium in elderly who underwent surgery. The investigators are investigating different tools that can help to screen for cognitive dysfunction and delirium in the future.

Although data suggest that non-pharmacologic therapies such as Reminiscence Therapy (RT) and Cognitive Stimulation (CS) can potentially maintain or reverse this trend, cognitive impairment can be a precursor to neurodegenerative processes. This study aimed to assess how an RT and a CS program affected cognition, depressive symptomatology, and quality of life (QoL) in older persons with cognitive decline who attended community support institutions in central Portugal. For seven weeks, a quasi-experimental study with two arms (RT and CS program) was conducted. The intervention was completed by 76 of the 109 older persons who were first screened (50 in the RT program, 26 in the CS program). In both groups, a pre- and post-intervention analysis revealed statistically significant differences in cognition, particularly in older adults' delayed recall ability.

Schizophrenia is a heritable complex phenotype whose symptoms can be clustered into three domains: positive symptoms, negative symptoms and cognitive impairments. Constellations of negative symptoms in SCZ are composed of diminished motivation and pleasure, such as asociality, anhedonia, and avolition, or diminished expressivity such as blunted affect and alogia. Negative symptoms are associated with decreased quality of life and poor functional outcomes. Although antipsychotics are generally effective on positive symptoms, they are poorly effective on negative symptoms Currently, there are no licensed targeted medications for negative symptoms. In view of these problems, considerable interest in identifying new treatment targets for negative symptoms has grown over the past decade. Despite intense efforts in brain imaging that have opened new opportunities for addressing these issues, the neurobiological mechanism of negative symptoms remains unclear. Structural brain measures from magnetic resonance imaging (MRI) are highly heritable and representatively have high reproducibility and low measurement error. Prior neuroimaging researches have consistently shown neuroanatomical abnormalities in the brains of individuals with SCZ, with the most robust and consistent group-level structural differences in widespread reduced volumes of hippocampal thalamus, amygdala and nucleus accumbens. SCZ have been associated with widespread structural brain abnormalities, but results from neuroimaging studies have been inconsistent.

This is a 2-step study; 1st step was a cross sectional study carried out on 163 consecutive Type 2 Diabetes Mellitus (T2DM) patients employee attending outpatient clinics of the National Research Center (NRC), Egypt. A face-to-face interview was carried out to collect data about demographic data and medical history. Cognitive function assessment was carried out using Adenbrooke's Cognitive Examination III (ACE III) test and the Trail Making Test (TMT) which consists of two parts (A and B). Quality of life and depression were also assessed using Short Form-36 (SF-36) and Hamilton Depression Rating Scale (HRDS) questionnaires respectively. The second step was an interventional study for health education and life style modification. The main outcome measures were Fasting Blood Glucose (FBG), HbA1c, total blood cholesterol, HDL cholesterol, LDL cholesterol and triglycerides, oxidant and antioxidant (Malondialdehyde (MDA), glutathione peroxidase (GPx), glutathione reductase (GR)) which were assessed at baseline and reassessed after the intervention.

This study conducted a retrospective analysis of 64 patients with mild cognitive impairment of the kidney deficiency phlegm and stasis type who underwent treatment with Naohuan Dan combined with Idebenone. The patients' cognitive function was evaluated using the Mini-Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA) before and after treatment. Daily living abilities were assessed using the Activities of Daily Living (ADL) scale, depression status was evaluated using the Geriatric Depression Scale (GDS), and the severity of Traditional Chinese Medicine (TCM) syndrome was assessed using the TCM diagnostic scale. Peripheral blood from the patients was also collected for analysis of neuron-specific enolase (NSE) and inflammatory factors. The aim was to evaluate the safety and feasibility of using Naohuan Dan combined with Idebenone for the treatment of mild cognitive impairment of the kidney deficiency phlegm and stasis type.