1,590 research outputs found
Simple expert systems to improve an ultrasonic sensor-system for a tele-operated mobile-robot
'Across the pond'—a response to the NICE guidelines for management of multi-morbidity in older people
No abstract available
Informant single screening questions for delirium and dementia in acute care – a cross-sectional test accuracy pilot study
Background
Cognitive impairment often goes undetected in older people in hospital. Efficient screening tools are required to improve detection.<p></p>
To determine diagnostic properties of two separate informant-based single screening questions for cognitive impairment (dementia and delirium) in hospitalised older people.<p></p>
Methods
Patients over 65 years non-electively admitted to medical or geriatric wards within a teaching hospital. Our index tests were single screening questions (SSQ), one for dementia (“How has your relative/friend’s memory changed over the past 5 years (up to just before their current illness)?”) and one for delirium (“How has your relative/friend’s memory changed with his/her current illness?”), which were assessed with informant response given on a five point Likert scale.<p></p>
Any deterioration on our index tests of SSQ-dementia and SSQ-delirium was accepted as a positive screen for cognitive impairment. Scores were compared to the Informant Questionnaire for Cognitive Decline in the Elderly (IQCODE) >3.38 accepted as dementia, and Confusion Assessment Method (CAM) diagnosis of delirium. We also collected direct cognitive screening data using Mini Mental Status Examination (MMSE).<p></p>
Results
Informant responses were obtained in 70/161 (43.5%) patients, median age 80.8 (range:67–97) years; mean MMSE score 18.5 (SD: 8.1). The SSQ-dementia when compared to the IQCODE had a sensitivity of 83.3% and specificity of 93.1%. The SSQ-delirium when compared to CAM diagnosis had sensitivity of 76.9% and a specificity of 56.1%.<p></p>
Conclusions
These findings show promise for use of an informant single screening question tool as the first step in detection of dementia in older people in acute hospital care, although this approach appears to be less accurate in screening for delirium.<p></p>
Evaluation of delirium screening tools in geriatric medical inpatients: a diagnostic test accuracy study
Introduction: screening all unscheduled older adults for delirium is recommended in national guidelines, but there is no consensus on how to perform initial assessment.
Aim: to evaluate the test accuracy of five brief cognitive assessment tools for delirium diagnosis in routine clinical practice.
Methods: a consecutive cohort of non-elective, elderly care (older than 65 years) hospital inpatients admitted to a geriatric medical assessment unit of an urban teaching hospital. Reference assessments were clinical diagnosis of delirium performed by elderly care physicians. Routine screening tests were: Abbreviated Mental Test (AMT-10, AMT-4), 4 A's Test (4AT), brief Confusion Assessment Method (bCAM), months of the year backwards (MOTYB) and informant Single Question in Delirium (SQiD).
Results: we assessed 500 patients, mean age 83 years (range = 66−101). Clinical diagnoses were: 93 of 500 (18.6%) definite delirium, 104 of 500 (20.8%) possible delirium and 277 of 500 (55.4%) no delirium; 266 of 500 (53.2%) were identified as definite or possible dementia. For diagnosis of definite delirium, AMT-4 (cut-point < 3/4) had a sensitivity of 92.7% (95% confidence interval (CI): 84.8–97.3), with a specificity of 53.7% (95% CI: 48.1–59.2); AMT-10 (<4/10), MOTYB (<4/12) and SQiD showed similar performance. bCAM had a sensitivity of 70.3% (95% CI: 58.5–80.3) with a specificity of 91.4% (95% CI: 87.7–94.3). 4AT (>4/12) had a sensitivity of 86.7% (95% CI: 77.5–93.2) and specificity of 69.5% (95% CI: 64.4–74.3).
Conclusions: short screening tools such as AMT-4 or MOTYB have good sensitivity for definite delirium, but poor specificity; these tools may be reasonable as a first stage in assessment for delirium. The 4AT is feasible and appears to perform well with good sensitivity and reasonable specificity
Conducting and reporting trials for older people
Randomised controlled trials provide the most rigorous test of efficacy and effectiveness for interventions used in healthcare. They underpin much of clinical practice, yet older people are often excluded from studies, resulting in uncertainty about risks and benefits of new treatments. Encouraging inclusion of older people in randomised controlled trials and reporting of trial results in a rigorous manner is a key function of clinical geriatrics journals such as Age and Ageing. This article provides practical advice on how to report randomised controlled trials that are targeted at older people. Some of these issues are generic, but there are specific requirements which apply to most studies of older people. Recording and reporting basic characteristics of recruits in terms of physical function, cognition, comorbidity and/or frailty is vital to allow proper interpretation of the external validity of the trial. Adverse effects should include consideration of common geriatric problems including falls. Authors should follow the CONSORT reporting guidelines (CONsolidated Standards Of Reporting Trials) to enhance the transparency and quality of their manuscript
Early Quenching of Massive Protocluster Galaxies Around <i>z</i>=2.2 Radio Galaxies
Radio galaxies are among the most massive galaxies in the high-redshift Universe and are known to often lie in protocluster environments. We have studied the fields of seven z = 2.2 radio galaxies with High Acuity Wide field K-band Imager (HAWK-I) narrow-band and broad-band imaging in order to map out their environment using Hα emitters (HAEs). The results are compared to the blank field HAE survey HiZELS. All of the radio galaxy fields are overdense in HAEs relative to a typical HiZELS field of the same area and four of the seven are richer than all except one of 65 essentially random HiZELS subfields of the same size. The star formation rates of the massive HAEs are lower than those necessary to have formed their stellar population in the preceding Gyr – indicating that these galaxies are likely to have formed the bulk of their stars at higher redshifts, and are starting to quench
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