Eamonn Eeles

A randomized controlled trial of quetiapine versus placebo in the treatment of delirium

BACKGROUND Delirium is a commonly occurring complex neuropsychiatric disorder. Evidence for its treatment based on randomized controlled trials (RCTs) is poor. AIMS To determine the efficacy and acceptability of quetiapine in the treatment of delirium. METHOD A double-blind, RCT was conducted. A total of 42 patients were randomized to quetiapine or a placebo group. The primary outcome measure was the Delirium Rating Scale Revised 98. Other scales used were the Brief Psychiatric Rating Scale, Mini-Mental State Examination and Clinical Global Improvement. In order to account for missing data, a nonlinear mixed-effects model was used to estimate the difference between the two groups. RESULTS The quetiapine group improved more rapidly than the placebo group. Specifically, the quetiapine group recovered 82.7% faster (S.E. 37.1%, P=.026) than the placebo group in terms of DRS-R-98 severity score. In terms of the DRS-R-98 noncognitive subscale, the quetiapine group improved 57.7% faster (S.E. 29.2%, P=.048) than the placebo group. CONCLUSIONS Quetiapine has the potential to more quickly reduce the severity of noncognitive aspects of delirium. This study was underpowered for treatment comparisons at specific points in time but nonetheless detected significant differences when analyzing the whole study period. While it is not possible to draw definitive conclusions, further larger studies exploring the use of quetiapine in other delirium populations seem justified. Larger increments in the dose of quetiapine may yield even stronger results.

Predictors of adverse outcomes on an acute geriatric rehabilitation ward

BACKGROUND multidisciplinary rehabilitation is of proven benefit in the management of older inpatients. However, the identification of patients who will do well with rehabilitation currently lacks a strong evidence base. OBJECTIVES the aims of this study were to compare the importance of chronological age, gender, co-morbidities and frailty in the prediction of adverse outcomes for patients admitted to an acute geriatric rehabilitation ward. DESIGN prospective observational cohort study. SUBJECTS AND SETTING two hundred and sixty-five patients admitted consecutively to an acute geriatric rehabilitation ward at a tertiary care teaching hospital. METHODS frailty status was measured by an index of accumulated deficits, giving a potential score from 0 (no deficits) to 1.0 (all 40 deficits present). Patients were stratified into three outcomes: good (discharged to original residence within 28 days), intermediate (discharged to original residence but longer hospital stay) and poor (newly institutionalised or died). RESULTS patients were old (82.6 ± 8.6 years) and frail (mean frailty index (FI) 0.34 ± 0.09). Frailty status correlated significantly with length of stay and was a predictor of poor functional gain. The odds ratio of intermediate and poor outcome relative to a good outcome was 4.95 (95% CI = 3.21, 7.59; P < 0.001) per unit increase in FI. Chronological age, gender and co-morbidity showed no significant association with outcomes. CONCLUSION frailty is associated with adverse rehabilitation outcomes. The FI may have clinical utility, augmenting clinical judgement in the management of older inpatients.

Characterization of Neurological Injury in Transcatheter Aortic Valve Implantation How Clear Is the Picture

The application of transcatheter aortic valve implantation (TAVI) to high-surgical-risk and inoperable patients with severe aortic stenosis (AS) is gaining widespread acceptance with a burgeoning supportive evidence base.1 The benefits associated with the application of this technique, however, are mitigated by the occurrence of major, disabling stroke with associated increased mortality and early-reduced quality of life.2 Despite this, the risk/benefit ratio has been considered acceptable in appropriately selected patients given the outcomes of alternate management options in these high-risk and inoperable populations.3,4 The incidence of cerebrovascular events (CVEs) subsequent to TAVI exceeds that after any other cardiac intervention or valve surgery, most notably in the acute periprocedural period, diminishing over the subsequent 2 months.5 This elevated early risk reflects the increased incidence of ischemic stroke thought secondary to particulate emboli dislodged by the procedure itself or as a result of thromboembolism.6 In fact, cerebral embolism is a universal finding associated with these procedures.7 Most events, however, are subclinical or silent, with clinically apparent CVEs representing but the tip-of-the-iceberg. As a result of the difficulty ascertaining these subclinical events, the true association between TAVI and neurological injury is unknown and the harm potentially underestimated. This article aims to comprehensively review neurological injury in TAVI, with an emphasis on cerebrovascular disease. Evidence and current concepts regarding pathophysiological mechanisms, risk factors, and prognostic implications will be discussed and risk reduction strategies explored. CVEs post-TAVI are classified based on clinical severity as illustrated in Figure 1. Incomplete reporting and variable definitions of clinically apparent events and disregard of subclinical events have limited the true evaluation of CVEs associated with TAVI. Consequently, in 2011 the Valve Academic Research Consortium published a consensus report on standardized end point definitions, including stroke, which were expanded and refined in …

The silent and apparent neurological injury in transcatheter aortic valve implantation study (SANITY): concept, design and rationale.

BackgroundThe incidence of clinically apparent stroke in transcatheter aortic valve implantation (TAVI) exceeds that of any other procedure performed by interventional cardiologists and, in the index admission, occurs more than twice as frequently with TAVI than with surgical aortic valve replacement (SAVR). However, this represents only a small component of the vast burden of neurological injury that occurs during TAVI, with recent evidence suggesting that many strokes are clinically silent or only subtly apparent. Additionally, insult may manifest as slight neurocognitive dysfunction rather than overt neurological deficits. Characterisation of the incidence and underlying aetiology of these neurological events may lead to identification of currently unrecognised neuroprotective strategies.MethodsThe Silent and Apparent Neurological Injury in TAVI (SANITY) Study is a prospective, multicentre, observational study comparing the incidence of neurological injury after TAVI versus SAVR. It introduces an intensive, standardised, formal neurologic and neurocognitive disease assessment for all aortic valve recipients, regardless of intervention (SAVR, TAVI), valve-type (bioprosthetic, Edwards SAPIEN-XT) or access route (sternotomy, transfemoral, transapical or transaortic). Comprehensive monitoring of neurological insult will also be recorded to more fully define and compare the neurological burden of the procedures and identify targets for harm minimisation strategies.DiscussionThe SANITY study undertakes the most rigorous assessment of neurological injury reported in the literature to date. It attempts to accurately characterise the insult and sustained injury associated with both TAVI and SAVR in an attempt to advance understanding of this complication and associations thus allowing for improved patient selection and procedural modification.

Neurological Injury in Intermediate‐Risk Transcatheter Aortic Valve Implantation

Background The application of transcatheter aortic valve implantation (TAVI) to intermediate‐risk patients is a controversial issue. Of concern, neurological injury in this group remains poorly defined. Among high‐risk and inoperable patients, subclinical injury is reported on average in 75% undergoing the procedure. Although this attendant risk may be acceptable in higher‐risk patients, it may not be so in those of lower risk. Methods and Results Forty patients undergoing TAVI with the Edwards SAPIEN‐XT ™ prosthesis were prospectively studied. Patients were of intermediate surgical risk, with a mean±standard deviation Society of Thoracic Surgeons score of 5.1±2.5% and a EuroSCORE II of 4.8±2.4%; participant age was 82±7 years. Clinically apparent injury was assessed by serial National Institutes of Health Stroke Scale assessments, Montreal Cognitive Assessments (MoCA), and with the Confusion Assessment Method. These identified 1 (2.5%) minor stroke, 1 (2.5%) episode of postoperative delirium, and 2 patients (5%) with significant postoperative cognitive dysfunction. Subclinical neurological injury was assessed using brain magnetic resonance imaging, including diffusion‐weighted imaging (DWI) sequences preprocedure and at 3±1 days postprocedure. This identified 68 new DWI lesions present in 60% of participants, with a median±interquartile range of 1±3 lesions/patient and volumes of infarction of 24±19 μL/lesion and 89±218 μL/patient. DWI lesions were associated with a statistically significant reduction in early cognition (mean ΔMoCA −3.5±1.7) without effect on cognition, quality of life, or functional capacity at 6 months. Conclusions Objectively measured subclinical neurological injuries remain a concern in intermediate‐risk patients undergoing TAVI and are likely to manifest with early neurocognitive changes. Clinical Trial Registration URL: http://www.anzctr.org.au. Australian & New Zealand Clinical Trials Registry: ACTRN12613000083796.

A pragmatic triage system to reduce length of stay in medical emergency admission: Feasibility study and health economic analysis

BACKGROUND Departments of Internal Medicine tend to treat patients on a first come first served basis. The effects of using triage systems are not known. METHODS We studied a cohort in an Acute Medical Unit (AMU). A computer-assisted triage system using acute physiology, pre-existing illness and mobility identified five distinct risk categories. Management of the category of very low risk patients was streamlined by a dedicated Navigator. Main outcome parameters were length of hospital stay (LOS) and overall costs. Results were adjusted for the degree of frailty as measured by the Clinical Frailty Scale (CFS). A six month baseline phase and intervention phase were compared. RESULTS 6764 patients were included: 3084 in the baseline and 3680 in the intervention phase. Patients with very low risk of death accounted for 40% of the cohort. The LOS of the 1489 patients with very low risk of death in the intervention group was reduced by a mean of 1.85days if compared with the 1276 patients with very low risk in the baseline cohort. This was true even after adjustment for frailty. Over the six month period the cost of care was reduced by £250,158 in very low patients with no increase in readmissions or 30day mortality. CONCLUSIONS Implementation of an advanced triage system had a measurable impact on cost of care for patients with very low risk of death. Patients were safely discharged earlier to their own home and the intervention was cost-effective.

Screening in delirium: A pilot study of two screening tools, the Simple Query for Easy Evaluation of Consciousness and Simple Question in Delirium

Delirium is poorly recognised and inadequately treated in medical settings. This research aimed to determine the psychometric properties of a newly developed tool, SQeeC against another emergent instrument, SQiD, in the screening of delirium.

Management of delirium in medicine: Experience of a Close Observation Unit

A new model of care for the management of patients with delirium was developed and evaluated.

Sleep and its management in dementia

Sleep disturbance is a clinically significant problem in nearly one half of patients with dementia and is a predictor of cognitive and functional decline. There are multiple causes of sleep disturbance in dementia and all represent diagnostic and management challenges. Impaired circadian rhythm is a disorder characterized by an increase in daytime sleep with reduced night-time sleep, a reversal of the sleep/wake cycle. Such disrupted circadian rhythm may occur early in Alzheimers disease, worsen over time, and is associated with behavioural disturbance, including aggression. In addition to the timing of sleep, the structure of sleep may deteriorate, giving rise to poor sleep quality.

Attitudes to aging: a comparison of obituaries in Canada and the U.K.

BACKGROUND Populations worldwide are aging and the overall prevalence of dementia at death is now 30%. Since the contemporary social impact of a disease is indicated by the frequency of its newspaper coverage and since obituary notices illuminate conceptions of death, we hypothesized that obituary notices placed by families would reflect societal attitudes to aging and dementia. METHODS We undertook critical discourse analysis of obituaries in representative national and local newspapers in Canada and the U.K. RESULTS In the 799 obituaries studied, chronological age, suggested donations in memory of the deceased, and donations to dementia charities were each included in significantly more obituaries in Canadian newspapers than in U.K. ones. Military service was explicit for significantly more men aged > or = 80 years in Canada compared to the U.K. (41% versus 4%; p < 0.05). Of the donations to medical charities, nearly half (n = 117) were to cancer charities and one-fifth (54) to heart and stroke foundations. In the U.K., obituaries for those aged > or = 70 years were more likely to recommend donations to childrens charities (n = 12) or the Royal National Lifeboat Institution than dementia charities. CONCLUSIONS Donations to dementia charities were significantly more common in obituaries in Canada than in the U.K. In both countries, donations to medical charities did not reflect disease prevalence or impact to the individual. Societal attitudes in the U.K. may be impacted by the fragmentation of aging research and antipathy to geriatric medicine in the national medical press.