Italian guidance on Dementia Day Care Centres: A position paper.

Dementia Day Care Centres (DDCCs) are defined as services providing care and rehabilitation to people with dementia associated with behavioural and psychological symptoms (BPSD) in a semi-residential setting. According to available evidence, DDCCs may decrease BPSD, depressive symptoms and caregiver burden. The present position paper reports a consensus of Italian experts of different disciplines regarding DDCCs and includes recommendations about architectural features, requirements of personnel, psychosocial interventions, management of psychoactive drug treatment, prevention and care of geriatric syndromes, and support to family caregivers. DDCCs architectural features should follow specific criteria and address specific needs of people with dementia, supporting independence, safety, and comfort. Staffing should be adequate in size and competence and should be able to implement psychosocial interventions, especially focused on BPSD. Individualized care plan should include prevention and treatment of geriatric syndromes, a targeted vaccination plan for infectious diseases including COVID-19, and adjustment of psychotropic drug treatment, all in cooperation with the general practitioner. Informal caregivers should be involved in the focus of intervention, with the aim of reducing assistance burden and promoting the adaptation to the ever-changing relationship with the patient.

Early functional MRI changes in a prodromal semantic variant of primary progressive aphasia: a longitudinal case report.

OBJECTIVE: To assess longitudinal patterns of brain functional MRI (fMRI) activity in a case of prodromal semantic variant of a primary progressive aphasia (svPPA). METHODS: Clinical, cognitive and neuroimaging data (T1-weighted and task-based fMRI during silent naming [SN] and object knowledge [OK]) were obtained at baseline, month 8 and month 16 from a 49-year-old lady presenting with anomias and evolving to overt svPPA in 8 months. RESULTS: At baseline, the patient showed isolated anomias and mild left anterior temporal pole atrophy. During SN-fMRI, she showed bilateral temporal and left inferior frontal gyri (iFG) activations. During OK-fMRI, we observed normal performance and the recruitment of bilateral posterior hippocampi, iFG and left middle orbitofrontal gyrus (mOFG). At month 8, the patient received a diagnosis of svPPA and showed isolated right iFG activity during SN-fMRI, and a borderline performance during OK-fMRI together with a disappearance of mOFG recruitment. At the last visit (after 7-month language therapy), the patient showed a stabilization of naming disturbances, and, compared to previous visits, an increased left iFG recruitment during SN-fMRI. During OK-fMRI, she performed abnormally and did not show the activity of mOFG and iFG. Across all visits, brain atrophy remained stable. CONCLUSIONS: This case report showed longitudinal fMRI patterns during semantic-related tasks from prodromal to overt svPPA. Frontal brain recruitment may represent a compensatory mechanism in patients with early svPPA, which is likely to be reinforced by language-therapy. Brain fMRI is more sensitive compared with structural MRI to detect progressive brain changes associated with disease and treatment.

Predictors and prognosis of delirium among older subjects in cardiac intensive care unit: focus on potentially preventable forms.

BACKGROUND: Delirium is a common and potentially preventable condition in older individuals admitted to acute and intensive care wards, associated with negative prognostic effects. Its clinical relevance is being increasingly recognised also in cardiology settings. The aim of the present study was to assess the prevalence, incidence, predictors and prognostic role of delirium in older individuals admitted to two cardiology intensive care units. METHODS: All patients aged over 65 years consecutively admitted to the two participating cardiology intensive care units were enrolled. Assessment on admission included acute physiological derangement (modified rapid emergency medicine score, REMS), chronic comorbidity, premorbid disability and dementia. The Confusion Assessment Method-Intensive Care Unit was applied daily for delirium detection. RESULTS: Of 497 patients (40% women, mean age 79 years), 18% had delirium over the entire cardiology intensive care unit course, half of whom more than 24 hours after admission (incident delirium). Advanced age, a main diagnosis of ST-segment elevation myocardial infarction or acute respiratory failure, modified REMS, comorbidity and dementia were independent predictors of delirium. Adjusting for patient's features on admission, incident delirium was predicted by invasive procedures (insertion of peripheral arterial catheter, urinary catheter, central venous catheter, naso-gastric tube and intra-aortic balloon pump). In a logistic regression model, delirium was an independent predictor of inhospital mortality (odds ratio 3.18, 95% confidence interval 1.02, 9.93). CONCLUSIONS: Eighteen per cent of older cardiology intensive care unit patients had delirium, with half of the cases being incident, thus potentially preventable. Invasive procedures were independently associated with incident delirium. Delirium was an independent predictor of inhospital mortality. Awareness of delirium should be increased in the cardiology intensive care unit setting and prevention studies are warranted.

Validation study of the Italian version of Communication Activities of the Daily Living (CADL 2) as an ecologic cognitive assessment measure in older subjects.

INTRODUCTION: Communication can be affected by age related cognitive decline and mental deterioration. The second edition of the Communication Activities of the Daily Living (CADL 2) appears as an interesting ecological assessment tool of cognitive functions in old age. OBJECTIVE: The aim of this work is to (1) develop an Italian version of CADL 2, (2) to test its psychometric properties in terms of reliability and validity, and (3) to measure CADL 2 discriminative capacity between cognitively healthy and cognitively impaired older subjects. METHOD: One hundred and eleven subjects were enrolled (36 M; 75 F, age 80, 80.85 ± 7 years, education 9.3 ± 4.7 years). The CADL 2 was administered together with a standard neuropsychological battery. RESULTS: The CADL 2 showed good reliability and correlates with all the cognitive evaluation tests. The CADL 2's area under the curve was equal to 0.80, index of good diagnostic accuracy. CONCLUSIONS: The CADL 2 is an appropriate assessment tool for communication skills in aging.

High blood pressure in older subjects with cognitive impairment.

High blood pressure and cognitive impairment often coexist in old age, but their pathophysiological association is complex. Several longitudinal studies have shown that high blood pressure at midlife is a risk factor for cognitive impairment and dementia, although this association is much less clear in old age. The effect of blood pressure lowering in reducing the risk of dementia is only borderline significant in clinical trials of older subjects, partly due to the insufficient follow-up time. Conversely, dementia onset is associated with a decrease of blood pressure values, probably secondary to neurodegeneration. Prognostic effect of blood pressure values in cognitively impaired older subjects is still unclear, with aggressive blood pressure lowering being potentially harmful in this patients category. Brief cognitive screening, coupled with simple motor assessment, are warranted to identify frail older subjects who need a more cautious approach to antihypertensive treatment. Values obtained with ambulatory blood pressure monitoring seem more useful than clinical ones to predict the outcome of cognitively impaired older subjects. Future studies should identify the most appropriate blood pressure targets in older subjects with cognitive impairment.

Electrophysiological correlates of word recognition memory process in patients with ischemic left ventricular dysfunction.

OBJECTIVE: The relationship between left ventricular ejection fraction (LVEF) and cognitive performance in patients with coronary artery disease without overt heart failure is still under debate. In this study we combine behavioral measures and event-related potentials (ERPs) to verify whether electrophysiological correlates of recognition memory (old/new effect) are modulated differently as a function of LVEF. METHODS: Twenty-three male patients (12 without [LVEF>55%] and 11 with [LVEF<40%] left ventricular dysfunction), and a Mini Mental State Examination score >25 were enrolled. ERPs were recorded while participants performed an old/new visual word recognition task. RESULTS: A late positive ERP component between 350 and 550ms was differentially modulated in the two groups: a clear old/new effect (enhanced mean amplitude for old respect to new items) was observed in patients without LVEF dysfunction; whereas patients with overt LVEF dysfunction did not show such effect. In contrast, no significant differences emerged for behavioral performance and neuropsychological evaluations. CONCLUSIONS: These data suggest that ERPs may reveal functional brain abnormalities that are not observed at behavioral level. SIGNIFICANCE: Detecting sub-clinical measures of cognitive decline may contribute to set appropriate treatments and to monitor asymptomatic or mildly symptomatic patients with LVEF dysfunction.

Neurocognitive profile of patients with continuous flow left ventricular assist device.

The increase of severe heart failure and the consequent reduction of the organ availability for transplantation has led to, in recent years, the introduction of the LVAD as replacement therapy to heart transplantation. Severe Heart Failure patients show cognitive deficits in various domains especially in executive functions, memory and speed of proceedings, due to different neurophysiopathological processes including chronic hypoperfusion and subsequent damage to hippocampal and para-hippocampal cortical areas. It is also known that these deficits improve after heart transplantation. We carried out a literature review selecting studies that analyzed the cognitive changes in patients with severe heart failure after implantation of the Continuous Flow Left Ventricular Assist Device. According to the inclusion criteria, we selected four studies since 2005 that presented a comprehensive neurocognitive assessment. The results show that the cognitive profile, with the implantation of LVAD improves in memory and executive domains, and this improvements results stable in short-medium time. The effects would also be independent of the type of flow produced by the device (pulsatile vs continuous). We believe that further studies are required to explore the relationship between LVAD and cognitive function in severe heart failure.

Different motor tasks impact differently on cognitive performance of older persons during dual task tests.

BACKGROUND: Dual task paradigm states that the introduction of a second task during a cognitive or motor performance results in a decreased performance in either task. Treadmill walk, often used in clinical applications of dual task testing, has never been compared to overground walk, to ascertain its susceptibility to interference from a second task. We compared the effects of overground and treadmill gait on dual task performance. METHODS: Gait kinematic parameters and cognitive performance were obtained in 29 healthy older adults (mean age 75 years, 14 females) when they were walking freely on a sensorized carpet or during treadmill walking with an optoelectronic system, in single task or dual task conditions, using alternate repetition of letters as a cognitive verbal task. FINDINGS: During overground walking, speed, cadence, step length stride length, and double support time (all with P value<0.001) and cognitive performance (number of correct words, P<0.001) decreased substantially from single to dual task testing. When subjects walked at a fixed speed on the treadmill, cadence decreased significantly (P=0.005), whereas cognitive performance remained unaffected. INTERPRETATION: Both motor and cognitive performances decline during dual task testing with overground walking. Conversely, cognitive performance remains unaffected in dual task testing on the treadmill. In the light of current dual task paradigm, these findings may have relevant implication for our understanding of motor control, as they suggest that treadmill walk does not involve brain areas susceptible to interference from the introduction of a cognitive task.

Biomarkers of Alzheimer's disease: from central nervous system to periphery?

Alzheimer's Disease (AD) is the most frequent form of dementia and represents one of the main causes of disability among older subjects. Up to now, the diagnosis of AD has been made according to clinical criteria. However, the use of such criteria does not allow an early diagnosis, as pathological alterations may be apparent many years before the clear-cut clinical picture. An early diagnosis is even more valuable to develop new treatments, potentially interfering with the pathogenetic process. During the last decade, several neuroimaging and cerebrospinal fluid (CSF) parameters have been introduced to allow an early and accurate detection of AD patients, and, recently, they have been included among research criteria for AD diagnosis. However, their use in clinical practice suffers from limitations both in accuracy and availability. The increasing amount of knowledge about peripheral biomarkers will possibly allow the future identification of reliable and easily available diagnostic tests.

Day Care for older dementia patients: favorable effects on behavioral and psychological symptoms and caregiver stress.

OBJECTIVE: To assess the effects of Day Care (DC) on older subjects with dementia and their caregivers. METHODS: Thirty patients with dementia, consecutively admitted to a DC, were compared with 30 patients, matched for age and cognitive function, who received usual home care (HC). Primary caregivers were compared as well. At baseline and after 2 months, patients were assessed for cognitive and functional status, behavioral and psychological symptoms [Neuropsychiatric Inventory (NPI)] and psychotropic drugs use, and caregivers were evaluated for care burden [Caregiver Burden Inventory (CBI)] and depressive symptoms. RESULTS: After adjusting for potential confounders, NPI score significantly decreased in DC group, with a reduction of psychotropic drugs prescription, whereas it increased in HC. No significant between-group difference was observed for cognitive and functional change. CBI significantly decreased in DC, but not HC, caregivers, with no significant between-group difference in depressive symptoms change. CONCLUSIONS: A 2-month period of DC assistance is effective in reducing behavioral and psychological symptoms of dementia patients and in alleviating caregivers' burden.

Is antidepressant treatment associated with reduced cognitive decline in Alzheimer's disease?

BACKGROUND: Although antidepressant drugs (ATD) are frequently prescribed to patients with Alzheimer's disease (AD), their effect on cognitive status has been only rarely assessed. METHODS: The impact of depressive symptoms and ATD on cognitive status was retrospectively assessed in 72 older AD outpatients with mild-to-moderate cognitive impairment, treated with cholinesterase inhibitors, over a 9-month follow-up. RESULTS: Compared to subjects without baseline depressive symptoms, those with symptoms who were continuously treated with ATD had less cognitive decline; those never treated, or not continuously treated despite baseline symptoms, had an intermediate trend. Such a protective action of ATD was, at least in part, independent of their action on depressive symptoms. CONCLUSION: These observations suggest that ATD may reduce cognitive decline in depressed older AD patients.