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Biomedical subjects

C G Lyketsos

Publications and source records attributed to C G Lyketsos.

At least 37 records · Page 2Linked to original sources
PubMed2000

Dementia in elderly persons in a general hospital.

OBJECTIVE: This study investigated the prevalence of dementia in a general hospital, reasons for which patients with dementia were admitted, and the relationship between dementia and length of stay, cost, and in-hospital mortality rate. METHOD: The study focused on data from the hospital database on 21,251 patients aged 60 and older who were discharged in 1996 and 1997. Patients were grouped as with or without a discharge diagnosis of dementia by ICD-9-CM criteria. The groups were compared on sociodemographic characteristics, principal discharge diagnoses, lengths of stay, costs, and in-hospital mortality rates. RESULTS: The prevalence of dementia among discharged patients was 3.9% (N=823); it was dependent on age (age 60-64, prevalence=2.6%; age 85 and older, prevalence=8.9%). The primary discharge diagnoses of the groups were different. The mean length of stay was 10.4 days for patients with dementia and 6.5 days for patients without dementia. Per capita hospital costs were $4,000 higher for patients with dementia. Differences in lengths of stay and per capita costs were statistically significant after adjusting for age, race, and sex. Lengths of stay and hospital costs for patients with dementia were significantly higher for eight primary discharge diagnoses after adjusting for age, race, and sex. CONCLUSIONS: Dementia is present in a significant proportion of patients admitted to general inpatient units. Patients with dementia are admitted for different reasons than patients without dementia and appear to have longer stays, which are associated with higher costs. Efforts to identify dementia early during hospitalization could improve patient care and reduce costs.

Age Distribution↗
PubMed2000

Mental and behavioral disturbances in dementia: findings from the Cache County Study on Memory in Aging.

OBJECTIVE: The authors report findings from a study of 5,092 community residents who constituted 90% of the elderly resident population of Cache County, Utah. METHOD: The 5,092 participants, who were 65 years old or older, were screened for dementia. Based on the results of this screen, 1,002 participants (329 with dementia and 673 without dementia) underwent comprehensive neuropsychiatric examinations and were rated on the Neuropsychiatric Inventory, a widely used method for ascertainment and classification of dementia-associated mental and behavioral disturbances. RESULTS: Of the 329 participants with dementia, 214 (65%) had Alzheimer's disease, 62 (19%) had vascular dementia, and 53 (16%) had another DSM-IV dementia diagnosis; 201 (61%) had exhibited one or more mental or behavioral disturbances in the past month. Apathy (27%), depression (24%), and agitation/aggression (24%) were the most common in participants with dementia. These disturbances were almost four times more common in participants with dementia than in those without. Only modest differences were observed in the prevalence of mental or behavioral disturbances in different types of dementia or at different stages of illness: participants with Alzheimer's disease were more likely to have delusions and less likely to have depression. Agitation/aggression and aberrant motor behavior were more common in participants with advanced dementia. CONCLUSIONS: On the basis of their findings in this large community population of elderly people, the authors conclude that a wide range of dementia-associated mental and behavioral disturbances afflict the majority of individuals with dementia. Because of their frequency and their adverse effects on patients and their caregivers, these disturbances should be ascertained and treated in all cases of dementia.

Aged↗
PubMed2000

Vascular dementia and Alzheimer's disease: is there a difference? A comparison of symptoms by disease duration.

This study examined differences between vascular dementia (VaD) by the NINDS/AIRENS criteria and Alzheimer's disease (AD) on clinical grounds. A consecutive series of 517 patients with probable and possible VaD or AD were evaluated for cognitive, functional, and behavioral symptoms and separated into three subgroups by duration of dementia. These AD and VaD subgroups were then compared on a series of standardized clinical measures. The only consistent trends were for VaD patients to be more depressed, more functionally impaired, and less cognitively impaired within each disease duration subgroup. The authors conclude that there are few differences between clinically diagnosed VaD and AD. Subclassification of VaD into subgroups will improve the clinical utility of this nosologic entity.

Aged↗
PubMed2000

Veterans have less age-related cognitive decline.

Military service involves exposure to a number of stresses, both psychological and physical. On the other hand, military personnel generally maintain excellent fitness, and veterans have increased access to education and health care. The overall effect on age-related cognitive decline, whether for good or ill, of having served in the armed forces has not been investigated previously. In this study, we examined a diverse population of 208 veterans and 1,216 civilians followed as part of the Epidemiologic Catchment Area Study in 1981, 1982, and 1993 to 1996. We examined change in Mini-Mental State Examination (MMSE) score after a median of 11.5 years. Veterans were found to have significantly less decrease in MMSE scores at follow-up even after sex, race, and education were taken into account. These results suggest an overall positive effect of military service on the rate of age-related cognitive decline.

Aged↗
PubMed1999

Cannabis use and cognitive decline in persons under 65 years of age.

The purpose of this study was to investigate possible adverse effects of cannabis use on cognitive decline after 12 years in persons under age 65 years. This was a follow-up study of a probability sample of the adult household residents of East Baltimore. The analyses included 1,318 participants in the Baltimore, Maryland, portion of the Epidemiologic Catchment Area study who completed the Mini-Mental State Examination (MMSE) during three study waves in 1981, 1982, and 1993-1996. Individual MMSE score differences between waves 2 and 3 were calculated for each study participant. After 12 years, study participants' scores declined a mean of 1.20 points on the MMSE (standard deviation 1.90), with 66% having scores that declined by at least one point. Significant numbers of scores declined by three points or more (15% of participants in the 18-29 age group). There were no significant differences in cognitive decline between heavy users, light users, and nonusers of cannabis. There were also no male-female differences in cognitive decline in relation to cannabis use. The authors conclude that over long time periods, in persons under age 65 years, cognitive decline occurs in all age groups. This decline is closely associated with aging and educational level but does not appear to be associated with cannabis use.

Adult↗
PubMed1999

Wandering behaviour in community-residing persons with dementia.

OBJECTIVES: To examine wandering behaviour in elderly demented persons in the community setting with respect to dementia characteristics and other factors that might influence wandering behaviour; to generate a statistical model to assess the relative importance of these various factors in predicting wandering behaviour. DESIGN: Cross-sectional, case-control investigation. SETTING: University-affiliated outpatient neuropsychiatric assessment center. PARTICIPANTS: Six hundred and thirty-eight consecutive community-residing new patients with dementia referred for evaluation. MEASUREMENTS: Comprehensive neuropsychiatric evaluation, including rating with Mini-Mental State Examination; General Medical Health Rating; Comell Scale of Depression in Dementia and caregiver interview. RESULTS: Wandering behaviour occurred in 17.4% of participants. It was significantly more prevalent in patients with Alzheimer Dementia (AD), patients with dementia of longer duration, and patients with more severe dementia. Wandering behaviour was associated with moderate to severe depression, delusions, hallucinations, and sleep disorder. Other significant associations of wandering behaviour included use of neuroleptic medication and male gender. After statistical adjustment for other variables, duration of dementia, severity of dementia and presence of sleep disorder retained significant statistical association with wandering behaviour. CONCLUSIONS: Wandering behaviour among community-residing elderly dementia patients is associated with a number of factors, some of which may be subject to modification. It is possible that management of coexistent psychopathology, particularly of sleep disorder, and of the underlying disease process of AD would help to ameliorate this problematic behavioural disorder. Further investigation is warranted into the relationship between neuroleptic medication and wandering behaviour and into possible alternative measures to control agitation in elderly dementia patients.

Age Distribution↗
PubMed1999

The stress and psychological morbidity of the Alzheimer patient caregiver.

BACKGROUND: Alzheimer's family caregivers suffer from psychological and physical morbidity associated with the care of the Alzheimer's patient. The objectives of the study were to compare stress and psychological morbidity between family caregivers of Alzheimer's disease patients and family caregivers of aged non-demented chronically ill patients and to explore the impact of cognitive and non-cognitive patient symptoms on caregivers. METHOD: Fifty-eight caregivers of Alzheimer's patients (cases) and 32 caregivers of non-demented chronically ill patients (controls) were studied. A cross-sectional case-control design was employed using validated scales to assess patient symptomatology and self-report questionnaires to measure stress and psychological morbidity in caregivers. RESULTS: Compared to controls, stress and psychological morbidity were higher in caregivers of Alzheimer's patients. Behavioral symptoms and impairment in instrumental activities of daily living were associated with caregiver stress. Length of care was associated with caregiver psychological morbidity. CONCLUSIONS: Caregiver stress may be reduced with special attention paid to the treatment and management of behavioral and functional symptoms in the Alzheimer's disease patient. Caregiver education and coping skills should also be included.

Aged↗
PubMed1999

An open-label trial of sertraline for the treatment of major depression in primary care.

Major depression is one of the most common medical disorders seen in primary care practice. Management frequently fails to meet recommended standards of treatment. For example, only a minority of patients are treated with antidepressants. The goals of this study were to establish the safety and effectiveness in the real world of a protocol-based pharmacological intervention administered by primary care physicians trained by psychiatrists. This was a naturalistic, open, 8-week, noncomparative, multicenter study of sertraline, 50-100 mg, in the treatment of 469 patients with mild-to-moderate major depression seen in primary care office settings. Effectiveness was assessed using the Hamilton Depression Rating Scale. The mean value of the HDRS declined steadily from 25.4 at baseline to 8.5 at day 56 (p < 0.0001). Fifty-two percent of patients achieved a full remission (HDRS <10 on day 56) and 70% had a positive response (50% reduction in HDRS scores). Only 26% had side effects, most of them mild. Major depression can be successfully diagnosed and treated by primary care physicians when adequately trained and supported by psychiatrists.

Adolescent↗
PubMed1999

The General Medical Health Rating: a bedside global rating of medical comorbidity in patients with dementia.

OBJECTIVE: Dementia is a serious public health problem. General medical comorbidity is common in dementia patients and critical to their care. However, little is known about medical comorbidity in these patients, and there are no straightforward bedside global rating scales for the seriousness of comorbid medical illness. This paper describes the development and measurement properties of the General Medical Health Rating (GHMR), a rapid global rating scale of medical comorbidity in dementia patients. DESIGN: Interrater reliability, concurrent validity, and predictive validity of the GMHR are reported. SETTING: An outpatient dementia clinic, assisted living, and nursing home. PARTICIPANTS: A total of 819 consecutive dementia clinic outpatients and 180 consecutive admissions to Copper Ridge, a long-term care residence for people with dementia, were included in the study. RESULTS: GMHR was found to be highly reliable (weighted kappa = .91). Across all stages and types of dementia, GMHR ratings were correlated with number of comorbid medical conditions, number of medications being taken for comorbid conditions, and with activity of daily living impairment, even after adjustment for severity of dementia. GMHR ratings were also a strong predictor of falls and of mortality in long-term care residents after adjustment for age and severity of dementia. CONCLUSION: GMHR is a reliable, valid, global bedside measure of severity of general medical comorbidity for patients with dementia that can be used for clinical and research purposes.

Accidental Falls↗
PubMed1999

Cognitive decline in adulthood: an 11.5-year follow-up of the Baltimore Epidemiologic Catchment Area study.

OBJECTIVE: The epidemiology of cognitive decline over 11.5 years was investigated in a large community-residing population, with a special emphasis on the relationship between education and cognitive decline. METHOD: The study was an 11.5-year follow-up of a probability sample of the adult household residents of east Baltimore. From the Baltimore cohort of the Epidemiologic Catchment Area study, 1,488 participants completed the Mini-Mental State during three study waves in 1981, 1982, and 1993-1996. For each study participant, the difference in scores on the Mini-Mental State between waves 2 and 3 was calculated. RESULTS: Over a median interval of 11.5 years, the study participants' scores on the Mini-Mental State declined a mean of 1.41 points, and the scores of 68% of the participants declined by at least 1 Mini-Mental State point. With and without adjustment for age, greater declines were associated with having 8 years or less of formal education and with being African American. CONCLUSIONS: Over a long time period, cognitive decline occurred in all age groups. Having more than 8 years of formal education was associated with less decline. However, beyond 9 years, additional education was not associated with a further reduction in cognitive decline. This suggests that a minimal amount of education during early critical periods might confer protection against cognitive decline later in life.

Adolescent↗
PubMed1999

Physical aggression in dementia patients and its relationship to depression.

OBJECTIVE: The goal of this study was to determine the frequency of physically aggressive behavior in community-residing patients with dementia and its relationship to depression. METHOD: A consecutive series of 541 patients with DSM-IV-defined dementia underwent comprehensive neuropsychiatric evaluation and were rated on the Cornell Scale for Depression in Dementia, the Mini-Mental State, the Psychogeriatric Dependency Rating Scale, and the General Medical Health Rating. RESULTS: Physically aggressive behavior was exhibited by 79 patients in the 2 weeks before evaluation. Aggressive behavior was closely associated with moderate to severe depression, male gender, and greater impairment in activities of daily living, even after adjustment for delusions, hallucinations, sleep disturbance, and severity of cognitive impairment. After adjustment for depression, gender, and impairment in activities of daily living, there was no association between physically aggressive behavior and the presence of either delusions or hallucinations. CONCLUSIONS: A substantial minority of patients with dementia exhibit physically aggressive behavior, and this aggression is strongly linked with the presence of depressive symptoms. It is possible that the identification and treatment of depression in dementia may be a means of preventing and managing physically aggressive behavior.

Activities of Daily Living↗
PubMed1999

Secondary mania in patients with HIV infection: are antiretrovirals protective?

A case-control study of 19 patients with HIV-associated mania and 57 HIV-seropositive control patients matched by CD4 cell count, age, and year of treatment was undertaken to investigate associations with risk factors for human immunodeficiency virus (HIV) infection, treatment, and disease. There was no significant difference between groups for HIV exposure category, baseline health status, or drugs other than antiretrovirals. Zidovudine therapy provided a significant protective effect against the development of mania, whether administered at or prior to diagnosis of mania. In a 3-year follow-up study, incident AIDS dementia was significantly more common in patients with mania, despite no apparent difference in survival between cases and controls. These findings strengthen the evidence of an etiological association of HIV neuropathology with AIDS mania by demonstrating a protective effect of an antiretroviral agent able to penetrate the central nervous system.

Adult↗
PubMed1999

A randomized, controlled trial of bright light therapy for agitated behaviors in dementia patients residing in long-term care.

BACKGROUND: Agitated behaviors are common in dementia patients residing in chronic care settings. Their occurrence may be associated with lack of adequate exposure to sunlight and with circadian rhythm disturbances. OBJECTIVE: Prior research has suggested that bright light therapy (BLT) may reduce agitated behaviors in dementia patients. The aim of this study was to test the efficacy of BLT in a randomized, controlled, crossover clinical trial. METHOD: Fifteen patients with dementia and agitated behaviors residing in a chronic care facility were randomized in a crossover design to morning BLT for 1 hour per day or to a control condition with dim light exposure. Patients were treated in either condition for 4 weeks, followed by 1 week on no treatment, prior to being crossed over to the other condition. RESULTS: Eight out of 15 patients completed the entire study. The rest completed at least 2 weeks of study. Patients randomized to the BLT condition exhibited a statistically significant improvement in nocturnal sleep from a mean of 6.4 hours/night to 8.1 hours/night 4 weeks later (p<0.05). The sleep of patients in the control condition did not improve significantly. There were no other significant differences between baseline and follow-up, nor between BLT and control treated patients on the other outcome measures, which included the Behavioral Pathology in Alzheimer Disease scale (Behave-AD) and the Cornell Scale for Depression in Dementia. CONCLUSION: Patients with dementia in chronic care who exhibit agitated behaviors sleep more hours at night when administered morning BLT. However, BLT does not lead to improvements in agitated behaviors in institutionalized patients with dementia with non-disturbed sleep-wake cycles.

Aged↗
PubMed1998

Delusions in Alzheimer's disease: a review.

Alzheimer's disease is the leading cause of mental impairment in elderly people, accounting for a large proportion of admissions to nursing homes and assisted living homes. Psychiatric symptoms associated with Alzheimer's disease, although common, have not received much attention until recently. In this review the authors discuss in detail the association between Alzheimer's disease and delusions. Definitions of terms are followed by an overview of the classification, clinical epidemiology, etiology, treatment, and prognosis of delusions in Alzheimer's disease. The article concludes by highlighting some of the open questions regarding delusions in Alzheimer's disease.

Aged↗
PubMed1998

Relationship of cognitive and functional impairment to depressive features in Alzheimer's disease and other dementias.

Patients with clinical diagnoses of Alzheimer's disease, vascular dementia, or undifferentiated dementia were rated on standardized measures of depression, cognitive impairment, and functional impairment. Logistic regression was used to evaluate the relationship between functional or cognitive impairment, as well as their interaction, and depressive features in each group. This analysis revealed notable differences by type of dementia. The results imply that the mechanisms underlying depression in Alzheimer's disease may be different from those in vascular and other types of dementia. These results also provide indicators to the clinician for further evaluation of depression in different dementia subtypes.

Aged↗
PubMed1998

Use of the Brief Psychiatric Rating Scale as a predictor of psychiatric admission for non-suicidal patients.

OBJECTIVE: We hypothesized that a systematic determination of symptom severity would predict psychiatric admission for non-suicidal patients referred for a psychiatric evaluation in an urban emergency department (ED) setting. METHOD: In a pilot study involving consecutive patients referred for a psychiatric evaluation in an urban ED, symptom severity was quantified using the Brief Psychiatric Rating Scale (BPRS). The BPRS scores of all non-suicidal patients were subjected to receiver operator characteristic (ROC) curve analysis to determine the sensitivity, specificity, and optimal cutoff score of the BPRS in predicting admission for non-suicidal patients. RESULTS: A BPRS cutoff score of 39 had a sensitivity of 85.71 percent and a specificity of 86.11 percent. The area under the ROC curve was .8671 (Somer's D = .7342) and the standard error of the curve was .1124. The cutoff score of 39 correctly identified six of seven non-suicidal patients who were hospitalized. CONCLUSIONS: It is anticipated that use of the BPRS in the ED will be further refined when a larger patient sample is studied. Potentially, a subset of BPRS items could be identified which would be more sensitive in predicting admission than the full BPRS and increase the overall efficiency of administering the BPRS in the ED.

Adult↗