Validade e fidedignidade da Escala de Depressão Geriátrica na identificação de idosos deprimidos em um hospital geral

Associations between Informant-Reported Cognitive Complaint and Longitudinal Cognitive Decline in Subjective Cognitive Decline A 7-Year Longitudinal Study

OBJECTIVE

This study aimed to determine the predictive values of informant-reported memory decline (IMD) among subjective cognitive decline (SCD) older adults from a 7-year community-based cohort study.

METHOD

Ninety SCD participants were included. Demographic data and neuropsychological test scores at both baseline and 7-year follow-up were collected. Differences between SCD with IMD (+IMD) and SCD without IMD (-IMD) were compared. Logistic regression models were used to determine whether baseline IMD could predict diagnostic outcomes at 7-year follow-up.

RESULTS

Forty-one percent of SCD adults had IMD. At baseline, the +IMD group showed more depressive symptoms (p = 0.016) than the -IMD group. Furthermore, the Beijing-version Montreal Cognitive Assessment (MoCA), Digit Span Test-Forward, Visual Matching and Reasoning, and Wechsler Adult Intelligence Scale-RC Picture Completion (WAIS-PC) scores in the +IMD group were significantly lower than those in the -IMD group. Fifty-four percent of +IMD participants converted to mild cognitive impairment (MCI) or dementia at follow-up, and 22.6% of the -IMD participants converted to MCI. Follow-up Mini-Mental State Examination, MoCA, and Verbal Fluency Test scores of the +IMD group were significantly lower than those in the -IMD group. The +IMD group was more likely to progress to cognitive impairment at 7-year follow-up (OR = 3.361, p = 0.028).

CONCLUSIONS

SCD participants with +IMD may have poorer cognition and are more likely to convert to cognitive impairment over time. Our long-term follow-up study confirmed the importance of informants' perceptions of SCD, which can help clinicians identify individuals at risk of cognitive decline.

Reliability and Validity of the Geriatric Depression Scale in a Sample of Portuguese Older Adults with Mild-to-Moderate Cognitive Impairment

Although the Geriatric Depression Scale (GDS) is a well-established instrument for the assessment of depressive symptoms in older adults, this has not been validated specifically for Portuguese older adults with cognitive impairment. The objective of this study was to analyze the psychometric properties of two Portuguese versions of the GDS (GDS-27 and GDS-15) in a sample of Portuguese older adults with mild-to-moderate cognitive impairment. Clinicians assessed for major depressive disorder and cognitive functioning in 117 participants with mild-to-moderate cognitive decline (76.9% female, Mage = 83.66 years). The internal consistency of GDS-27 and GDS-15 were 0.874 and 0.812, respectively. There was a significant correlation between GDS-27 and GDS-15 with the Beck Depression Inventory-II (GDS-27: rho = 0.738, p < 0.001; GDS-15: rho = 0.760, p < 0.001), suggesting good validity. A cutoff point of 15/16 in GDS-27 and 8/9 in GDS-15 resulted in the identification of persons with depression (GDS-27: sensitivity 100%, specificity 63%; GDS-15: sensitivity 90%, specificity 62%). Overall, the GDS-27 and GDS-15 are reliable and valid instruments for the assessment of depression in Portuguese-speaking older adults with cognitive impairment.

Classification of Parkinson's disease motor phenotype: a machine learning approach

To assess the cortical activity in people with Parkinson's disease (PwP) with different motor phenotype (tremor-dominant-TD and postural instability and gait difficulty-PIGD) and to compare with controls. Twenty-four PwP (during OFF and ON medication) and twelve age-/sex-/handedness-matched healthy controls underwent electrophysiological assessment of spectral ratio analysis through electroencephalography (EEG) at resting state and during the hand movement. We performed a machine learning method with 35 attributes extracted from EEG. To verify the efficiency of the proposed phenotype-based EEG classification the random forest and random tree were tested (performed 30 times, using a tenfolds cross validation in Weka environment). The analyses based on phenotypes indicated a slowing down of cortical activity during OFF medication state in PwP. PD with TD phenotype presented this characteristic at resting and the individuals with PIGD presented during the hand movement. During the ON state, there is no difference between phenotypes at resting nor during the hand movement. PD phenotypes may influence spectral activity measured by EEG. Random forest machine learning provides a slightly more accurate, sensible and specific approach to distinguish different PD phenotypes. The phenotype of PD might be a clinical characteristic that could influence cortical activity.

Cognitive abilities of institutionalized older persons with depressive symptoms

ABSTRACT Objective To determine the level of association between depressive symptoms and cognitive abilities of institutionalized older adults. Methods This is a cross-sectional study that enrolled 69 older adults, living in a long-term care facility. Investigation of depressive symptoms in all individuals was performed using the geriatric depression scale. Cognitive verbal fluency, digit span forward (DSF) and backward (DSB) tests, and two-minute stationary gait, sit-to-stand test, and six-minute walk test were performed to assess their association with depressive symptoms. Results Depressive symptoms were identified in 35 individuals. Worse cognition and physical performances were associated with the presence of depressive symptoms – Mini-Mental State Examination [t (61) = 2.36; p < 0.05] and Stationary gait test of two minutes [t (53) = 3.12; p < 0.05]. Short-term memory and working memory tests presented worse results in individuals with depressive symptoms (DSF: U = 402.00; p < 0.05 e DSB: U = 341,00; p < 0.05). Older adults with scores below normal in DSF were 5 times more likely to exhibit depressive symptoms. Conclusion The importance of physical, cognitive and social intervention strategies in long-term care facilities for the older adults is highlighted, in order to privilege autonomy. Notably, there is an association between deficits in short-term memory and the presence of depressive symptoms in older adults. Therefore, prospective studies are suggested to investigate the cause-effect relationship of this association with the institutionalization of older adults.

Depressive symptoms may be associated with semantic memory decline in elderly adults

Depressive symptoms are associated with a decline of episodic memory, but the relationship with semantic memory remains unclear.

Effects of Dance Exergaming on Depressive Symptoms, Fear of Falling, and Musculoskeletal Function in Fallers and Nonfallers Community-Dwelling Older Women

The aim of this study was to evaluate the effects of a pop dance exergaming protocol on fall risk factors-depressive symptoms, fear of falling, and musculoskeletal function-in community-dwelling older female fallers and nonfallers. There were 47 community-dwelling older women assigned to the intervention group (IG) [fallers (n = 10, 69.8 ± 4.3 years); nonfallers (n = 12, 68.9 ± 3.3 years)] and the control group (CG) [fallers (n = 12, 73.6 ± 5.4 years); nonfallers (n = 13, 68.7 ± 4.8 years)]. The CG maintained their lifestyle and the IG performed a videogame dance training three times per week for 12 weeks. The Dance Central game for Xbox 360® and Kinect motion sensor were used. The primary outcomes were geriatric depressive symptoms, fear of falling, and concentric and eccentric isokinetic peak torque (PT) of quadriceps and hamstrings. Secondary outcomes included cross-sectional area of quadriceps and hamstring muscles, functionality (Timed Up and Go test, gait speed, the Five Times Sit-to-Stand test), and a fall circumstances and outcomes recording. The depressive symptoms decreased in the Intervention Fallers Group. The eccentric hamstrings PT at 180°/s increased in the Intervention Nonfallers Group. There were no significant differences between groups for the other variables analyzed. The training attendance was 83% for the Intervention Fallers Group and 88% for the Intervention Nonfallers Group. Dance exergaming can be indicated to decrease depressive symptoms in fallers and increase the PT in nonfallers among community-dwelling older women.

Stress and Cognitive Reserve as independent factors of neuropsychological performance in healthy elderly

Exposure to high levels of cortisol and self-reported stress, as well as cognitive reserve, have been linked to Alzheimer's disease pathology. However, there are no studies on the interaction of these variables. The present study aims to assess the associations of measures of cortisol, self-reported stress, and cognitive reserve with neuropsychological performance in healthy elderly people; besides, to test the interactions between these variables. Cross-sectional analyzes were conducted using data on stress, cognitive reserve and clinical conditions in 145 healthy elderly adults. A neuropsychological battery was used to assess executive functions, verbal memory and processing speed. Measurement of salivary cortisol at the circadian nadir was taken. A negative association between different stress measures and performance on tasks of memory, executive functions and processing speed was observed. Elderly people with higher cognitive reserve showed superior performance on all neuropsychological measures. No significant interaction between stress and cognitive reserve to neuropsychological performance was observed. These results indicate that older adults with high levels of stress and reduced cognitive reserve may be more susceptible to cognitive impairment.

Indicators of sarcopenia and their relation to intrinsic and extrinsic factors relating to falls among active elderly women

Abstract Introduction: Musculoskeletal aging can impair functional performance increasing the risk of falls. Objective: To analyze the correlation between sarcopenia and the intrinsic and extrinsic factors involved in falls among community-dwelling elderly women. Method: A cross-sectional study evaluated the number of falls of 85 active community-dwelling elderly women in the previous year and then divided them into two groups: non-fallers (n=61) and fallers (n=24). The sarcopenia indicators assessed were gait speed (GS, 10m); handgrip strength (HS); calf circumference; appendicular muscle mass index (DXA). Intrinsic factors: Mental State Examination (MSE); visual acuity; depression (GDS-30); hip , knee (Lequesne) and ankle/foot (FAOS) pain/function; vestibular function (Fukuda test); functional mobility and risk of falls (TUG); power (sitting and standing five times); gait (treadmill); fear of falling (FES-I-Brazil). Extrinsic factors: risk/security features in homes. The independent t test was applied for comparisons between groups and the Pearson and Spearman tests were used for correlations (p<0.05). Results: There was a moderate correlation between HS and GS in non-fallers (r=0.47; p=0.001) and fallers (r= 0.54; p=0.03). There was a moderate negative correlation (r= -0.52; p=0.03) between FES-I-Brazil and gait cadence in fallers. There was a greater presence of stairs (p=0.001) and throw rugs (p=0.03) in the homes of fallers than non-fallers. Conclusion: The elderly women were not sarcopenic. Elderly fallers presented inferior gait cadence and a greater fear of falling. Residential risks were determining factors for falls, and were more relevant than intrinsic factors in the evaluation of falls among active community-dwelling elders.

Prevalência e determinantes de sintomatologia depressiva em idosos assistidos em serviço ambulatorial

OBJETIVO: Estimar a prevalência de sintomatologia depressiva e avaliar sua associação com fatores sociodemográficos e condições de saúde em idosos atendidos em serviço ambulatorial especializado geronto-geriátrico. MÉTODOS: Estudo epidemiológico, descritivo, quantitativo, de corte transversal. A amostra foi composta por 301 idosos com 60 anos e mais, de ambos os sexos. Realizou-se entrevista face a face com cada participante, sendo o diagnóstico de sintomatologia depressiva definido pela utilização da Escala de Depressão Geriátrica em versão reduzida de Yesavage (GDS-15). Processaram-se os dados com programa SPSS 13.0, realizando-se estatística descritiva, teste de associações, utilizando o Qui-quadrado de Pearson, o Teste Exato de Fisher e o teste de comparação entre duas médias. Para verificação do efeito independente das variáveis, foi utilizado um modelo de regressão linear. RESULTADOS: A prevalência global de sintomatologia depressiva correspondeu a 16,3%, seguindo a tendência epidemiológica atual descrita na literatura. Quando analisadas através do modelo linear generalizado binomial, apenas autopercepção da saúde, comparação com a saúde e handicap auditivo se mostraram associadas. CONCLUSÃO: Estratégias voltadas à identificação dos fatores associados à depressão podem ajudar os diversos profissionais dos serviços de saúde, inseridos em qualquer nível de atenção, a compreender a realidade destes indivíduos, bem como diagnosticar e propor intervenções mais precoces e adequadas possíveis.

Age-related differences in cortical activity during a visuo-spatial working memory task with facial stimuli

Emotion, importantly displayed by facial expressions, is one of the most significant memory modulators. The interaction between memory and the different emotional valences change across lifespan, while young adults (YA) are expected to better recall negative events (Negativity Bias Hypothesis), older adults (OA) tend to focus on positive stimuli (Positivity Effect Hypothesis). This research work aims at verifying whether cortical electrical activity of these two age groups would also be differently influenced by emotional valences in a visuo-spatial working memory task. 27 YA (13 males) and 25 OA (14 males), all healthy volunteers, underwent electroencephalographic recordings (21 scalp electrodes montage), while performing the Spatial Delayed Recognition Span Task using a touch screen with different stimuli categories: neutral, positive and negative faces and geometric pictures. YA obtained higher scores than OA, and showed higher activation of theta and alpha bands in the frontal and midline regions, besides a more evident right-hemispheric asymmetry on alpha band when compared to OA. For both age groups, performance in the task was worse for positive faces than to negative and to neutral faces. Facial stimuli induced a better performance and higher alpha activation on the pre-frontal region for YA, and on the midline, occipital and left temporal regions for OA when compared to geometric figures. The superior performance of YA was expected due to the natural cognitive deficits connected to ageing, as was a better performance with facial stimuli due to the evolutionary importance of faces. These results were related to cortical activity on areas of importance for action-planning, decision making and sustained attention. Taken together, they are in accordance with the Negativity Bias but do not support the Positivity Effect. The methodology used was able to identify age-related differences in cortical activity during emotional mnemonic processing and may be interesting to future investigations.

Associação entre sintomatologia depressiva e óbito hospitalar em idosos

OBJETIVO: Avaliar se a presença de sintomas depressivos associa-se a uma evolução hospitalar desfavorável (aumento da permanência e mortalidade hospitalar), independente da capacidade funcional. MÉTODO: Coorte prospectivo em pacientes idosos internados nas enfermarias de Clínica Médica do Hospital Universitário Lauro Wanderley (HULW), avaliados em dois momentos (segundo dia de internação e na alta). Os instrumentos utilizados foram a Escala de Depressão Geriátrica, versão breve (EDG-15) e Índice de Barthel para Incapacidade em Atividades da Vida Diária (IBAIVD). RESULTADOS: A idade dos 100 pacientes variou entre 60 e 96 anos (69,47 ± 7,45). A mortalidade hospitalar relacionou-se com os escores da EDG-15 da internação (p = 0,001). Observou-se correlação entre os escores da EDG-15 e IBAIVD no início (p = 0,008) e final da internação (p = 0,01), verificando-se correlações lineares inversas (p = -0,30), porém de magnitudes fracas (p = -0,30 e p = -0,28, respectivamente). CONCLUSÃO: Sintomatologia depressiva associou-se à maior mortalidade, independente da capacidade funcional. Ressalta-se a importância da avaliação da sintomatologia depressiva nos idosos internados. Novos estudos e análises prospectivas poderão oferecer mais indicadores sobre esse problema de pesquisa.

[Prevalence and factors associated with depression among institutionalized elderly individuals: nursing care support]

The objective of this study was to verify depression among institutionalized elderly individuals. The cross-section method and Yesavage's Geriatric Depression Scale were utilized in five geriatric long-term care facilities located in the Federal District to verify symptoms of depression. A total of 299 individuals were studied, 181 of whom did not meet the inclusion criteria. Sixteen individuals declined to participate. Considering the 102 individuals found suitable to participate in the study, 49.0% presented symptoms of depression; 36.3% suffered from mild to moderate depression and 12.7% showed symptoms of severe depression. Associations were found between depression symptoms and increased age, female gender, physical limitations/dependence and dissatisfaction with the institution. A significant association was also found between depression and insomnia, tachycardia, paresthesias, dizziness and excessive sweating. Depression is highly prevalent among institutionalized elderly individuals, more common among women, and correlated with a series of signs and symptoms that may help in making an early diagnosis, thus offering support to providing more effective nursing care.

Perfil dos idosos residentes em uma instituição de longa permanência

OBJETIVO: Traçar o perfil clínico-funcional de idosos de uma instituição de longa permanência para idosos (ILPI). MÉTODOS: Participaram 47 idosos de uma ILPI de Belo Horizonte/MG. Utilizaram-se questionário com informações sociodemográficas, Mini Exame do Estado Mental (MEEM), Escala de Depressão Geriátrica (GDS), Índice de Katz e Time Up and Go (TUG). Realizou-se análise descritiva (programa SPSS 14.0). RESULTADOS: Os idosos apresentaram média de 73,0 anos (±8,99). A maioria era mulher (51,1%), solteira (46,8%), sem filhos (51,1%) e de baixa escolaridade. O tempo de institucionalização variou de um mês a 25 anos. O motivo de institucionalização mais frequente foi para tratamento (29,8%), e 80,9% relataram receber visitas. Os idosos tomam em média 3,45 medicamentos (±1,87).Apenas 12,8% relataram quedas nos últimos seis meses e 80,9% tinham medo de cair. Cerca de 38,3% não utilizam dispositivo de auxílio à marcha, 12,8% utilizavam cadeira de rodas, 42,5% andador e 6,4% bengala. O desempenho no MEEM foi baixo, sendo que 93,3% apresentaram valores abaixo da nota de corte para escolaridade. Na GDS, 59,6% obtiveram valores que sugerem quadro depressivo. O TUG variou de 0,10 a 1,58 minutos. A maioria relatou ser independente para realizar as atividades do Katz (banhar-se: 80,9%; vestir-se: 83,0%; usar banheiro: 80,9%; transferir-se: 87,2%; micção: 59,6%; evacuação: 61,7%; alimentar-se: 93,6%) e nenhum relatou dependência completa. CONCLUSÕES: O perfil da população de idosos institucionalizados está de acordo com a literatura nos aspectos clínico-demográficos. A maioria dos idosos, entretanto, relatou ser independente para as atividades básicas de vida diária, o que representa boa oportunidade para intervenções que visem prevenir ou minimizar possíveis perdas funcionais.

Qualidade de vida em deglutição em idosos saudáveis

OBJETIVO: Conhecer a autopercepção de idosos saudáveis frente às possíveis dificuldades de deglutição. MÉTODOS: Participaram 104 idosos, 62 mulheres e 42 homens, com idades entre 60 e 88 anos, que autorreferiram bom estado de saúde geral, sem histórico de doenças degenerativas, neurológicas ou quaisquer outros acometimentos que pudessem influenciar na deglutição. Todos passaram por rastreios cognitivo e emocional e apresentaram condições satisfatórias em ambos. Foi aplicado um questionário para levantamento de dados gerais e de saúde, e o protocolo SWAL-QOL. Os dados foram analisados estatisticamente. RESULTADOS: A maior parte dos domínios do SWAL-QOL apresentou médias próximas ao valor máximo possível (100 pontos), indicando autopercepção positiva dos idosos quanto à qualidade de vida em deglutição. Idosos usuários de prótese dentária apresentaram melhores índices na maior parte dos domínios, quando comparados aos não usuários. Indivíduos que autorreferiram prótese mal adaptada obtiveram menores escores nos domínios deglutição como um fardo, duração da alimentação e frequência de sintomas. Homens e mulheres diferenciaram-se apenas nos domínios "Sono" e "Fadiga", em que mulheres apresentaram médias inferiores. Não houve correlação entre os escores obtidos no SWAL-QOL e as variáveis idade e renda. CONCLUSÃO: Idosos saudáveis, em geral, não autorreferem alterações significativas quanto à qualidade de vida em deglutição. Além disso, não há redução da qualidade de vida em deglutição à medida que há o avanço da idade. A prótese dentária, quando bem adaptada, minimiza prejuízos referentes à deglutição.

Efeito de uma intervenção cognitivo-motora sobre os sintomas depressivos de pacientes com doença de Parkinson

OBJETIVO: Verificar a eficácia de uma intervenção cognitivo-motora sobre os sintomas depressivos de pacientes com DP idiopática. MÉTODOS: Foi realizado um estudo longitudinal, composto por 26 pacientes, divididos entre os grupos experimental e controle. Os sujeitos foram avaliados pela Escala de Depressão Geriátrica, sendo o grupo experimental submetido a uma sequência de exercícios fisioterápicos de estimulação cognitivo-motora durante seis meses. Para a análise dos dados, foram aplicados os testes de Análise de Variâncias para medidas repetidas, a estatística por contraste e o teste t de Student para amostras independentes, sob um nível de significância de 5%. RESULTADOS: Os resultados apontaram homogeneidade dos grupos no momento inicial, e o grupo submetido ao tratamento fisioterápico obteve uma tendência de significância na interação "momento de intervenção" versus "grupo", evidenciado pelo erro alfa de 6%, com contraste linear de dados. CONCLUSÃO: O protocolo proposto apresentou boa aceitação pelos pacientes com DP. Apesar de não termos alcançado um intervalo de confiança de 95%, a tendência de significância obtida vislumbra um potencial do referido protocolo, mas com a necessidade de maiores estudos comprobatórios.