Search

Objectives To estimate the attributable fraction of nursing home placement associated with cognitive impairment, neuropsychiatric symptoms, behavioral disorders, functional limitations, and caregiver burden. Design Longitudinal study conducted on the “MEMORA cohort” linked with both regional public health insurance and hospital discharge databases. Setting Memory center at the University Hospital of Lyon, France. Participants A sample of 2456 outpatients attending the memory center between 2012 and 2017. Measures Cognitive impairment, functional limitations, neuropsychiatric symptoms/behavioral disorders, and caregiver burden were measured with the Mini-Mental State Examination, the Instrumental Activities of Daily Living scale, the Neuropsychiatric Inventory (NPI), and a short version of the Zarit Burden Inventory, respectively. Sociodemographics characteristics were collected during the first visit. Comorbidities were gathered from the hospital discharge database. Dates of nursing home placement were obtained from the public health insurance database. Results More than 38% of nursing home placements were attributable to caregiver burden, and the attributable fraction associated with functional limitations exceeded 35%. Between 20% and 25% of nursing home placements were due to cognitive impairment whereas less than 16% were attributable to neuropsychiatric symptoms or behavioral disorders. The associations between anxiety or agitation and nursing home placement were mediated by caregiver burden. Apathy or aberrant motor behaviors were associated with a higher risk of nursing home placement independently of caregiver burden. Conclusions/Implications Our findings suggest that a high proportion of nursing home placements are attributable to caregiver burden and functional limitations in outpatients attending a memory center. Cognitive impairment and neuropsychiatric symptoms or behavioral disorders contribute less to nursing home placements. Interventions directed to delay nursing home placement should emphasize actions toward reducing caregiver burden and functional limitations of patients.

Background Behavioral and psychological symptoms of dementia (BPSD) are frequent and troublesome for patients and caregivers. Considering possible preventive approaches, a better understanding of underlying neural correlates of BPSD is crucial. Objective The aim is to assess whether brain regional volume predicts behavioral changes in mild AD. Methods This work took part from the PACO study, a multicenter and prospective study that included 252 patients with mild AD from 2009 to 2014. Fifty-three patients were retained. Forty healthy matched control subjects from the ADNI cohort were included as controls. Voxel-based morphometry analysis was conducted to assess regional brain volume using baseline MRI scans as a predictor of future behavioral changes over a period of 18 months. Behavior was assessed at baseline and longitudinally at 6-month intervals using the shortened form of the Neuropsychiatric Inventory (NPI). Results The volume of 23 brain structures in frontal, temporal, parietal, occipital, subcortical regions and cerebellum predicted the evolution of NPI scores. Frontal volume was the most powerful predictor with frontal gyri, anterior cingulate cortex, and orbital gyri being particularly involved. Conclusion To our knowledge, this is the first study assessing regional brain volumes as predictors of behavioral changes considered at earlier stages of AD. Up to 23 brain structures were associated with an increased risk of developing BPSD. Frontal lobe volume was the strongest predictor of future evolution of NPI. The involvement of multiple structures in the prediction of behavior suggests a role of the main large-scale networks involved in cognition.

BACKGROUND Caregivers play a major role in the care of patients with dementia and are themselves at higher risk of disease. OBJECTIVES We investigate which factors are associated with caregivers burden of outpatients visiting a memory clinic and how functional autonomy and behavioral and psychological symptoms can influence caregiver burden. METHODS The study population was chosen from outpatients with progressive cognitive complaint. The caregiver burden was measured with the short version of the Zarit Burden Interview (ZBI). The relationship was assessed between the ZBI and the patients characteristics, including Neuropsychiatric Inventory (NPI), Instrumental Activities of Daily Living scale (IADL), the Mini-Mental State Examination (MMSE), etiology, and stage of the cognitive impairment. RESULTS In a population of 548 patients, IADL, NPI, antidepressant drugs, and MMSE were found to be related to ZBI, while diagnosed etiology and disease stage were not significant: ZBI decreased by 0.34 point for every unit of IADL, and by 0.03 point for every unit of MMSE; ZBI increased by 0.03 point for every unit of NPI. From the IADL scale, the ability to handle finances, food preparation, responsibility to take medications, mode of transportation, and ability to use the telephone increased the ZBI. Five areas of the NPI increased the ZBI: apathy, agitation, aberrant motor behavior, appetite disorders (p < 0.001), and irritability (p = 0.03). CONCLUSION Caregivers experience a higher burden due to disease symptoms such as impairment of functional autonomy and behavioral and cognitive impairment, whatever the etiology of the cognitive decline.

Alzheimer’s disease is characterised by a loss of cognitive function and behavioural problems as set out in the term “Behavioural and Psychological Symptoms of Dementia”. These behavioural symptoms have heavy consequences for the patients and their families. A greater understanding of behavioural symptoms risk factors would allow better detection of those patients, a better understanding of crisis situations and better management of these patients. Some retrospective studies or simple observations suggested that personality could play a role in the occurrence of behavioural symptoms. Finally, performance in social cognition like facial recognition and perspective taking could be linked to certain personality traits and the subsequent risks of behavioural symptoms. We propose to clarify this through a prospective, multicentre, multidisciplinary study. Main Objective: - To assess the effect of personality and life events on the risk of developing behavioural symptoms. Secondary Objectives: - To evaluate, at the time of inclusion, the connection between personality and performance in social cognition tests; - To evaluate the correlation between performance in social cognition at inclusion and the risks of occurrence of behavioural symptoms; - To evaluate the correlation between regional cerebral atrophy, using brain Magnetic Resonance Imaging at baseline, and the risk of behavioural symptoms. Study type and Population: Prospective multicentre cohort study with 252 patients with Alzheimer’s disease at prodromal or mild dementia stage. The inclusion period will be of 18 months and the patients will be followed during 18 months. The initial evaluation will include: a clinical and neuropsychological examination, collection of behavioural symptoms data (Neuropsychiatric-Inventory scale) and their risk factors, a personality study using both a dimensional (personality traits) and categorical approach, an inventory of life events, social cognition tests and an Magnetic Resonance Imaging. Patients will be followed every 6 months (clinical examination and collection of behavioural symptoms data and risk factors) during 18 months. This study aims at better identifying the patients with Alzheimer’s disease at high risk of developing behavioural symptoms, to anticipate, detect and quickly treat these disorders and so, prevent serious consequences for the patient and his caregivers. ClincalTrials.gov: NCT01297140

International audience; Background: We aimed to propose a correction of the Lawton instrumental activity of daily living (IADL) score to take into account the possibility to have never done some activities, and measured its agreement and reliability with the usual IADL score. Methods: A cross-sectional study was conducted in outpatients attending French memory clinics between 2014 and 2017. Lawton IADL, cognitive performance, diagnosis, neuropsychiatric symptoms, and sociodemographics characteristics were collected. A corrected IADL was calculated and its agreement with the usual IADL was assessed. Results: The study included of 2391 patients (79.9 years old, 61.7% female). Based on the usual IADL, 36.9% of patients had never carried out at least one of the activities. This proportion reached 68.8% for men and 17.7% for women. Women had a mean IADL higher than men: 4.72 vs 3.49, this difference decreased when considering the corrected IADL: 4.82 vs 4.26 respectively. Based on Bland-Altman method, 93.5% of observations lied within the limits agreement. The ICC between the 2 scores was 0.98. The relationships between patients' characteristics and the IADL scores were similar, regardless the usual or corrected version. Conclusions: This corrected IADL score had an excellent degree of agreement with the usual version based the ICC. This simple correction could benefit both for the clinical practice by providing a more accurate description of the real clinical state of the patients allowing to manage them more precisely, and for research involving the evaluation of the functional abilities of patients.