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267 result(s) for "Schulz, R.-J."
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Deep brain stimulation of the nucleus basalis of Meynert in Alzheimer’s dementia
Cholinergic neurons of the medial forebrain are considered important contributors to brain plasticity and neuromodulation. A reduction of cholinergic innervation can lead to pathophysiological changes of neurotransmission and is observed in Alzheimer’s disease. Here we report on six patients with mild to moderate Alzheimer’s disease (AD) treated with bilateral low-frequency deep brain stimulation (DBS) of the nucleus basalis of Meynert (NBM). During a four-week double-blind sham-controlled phase and a subsequent 11-month follow-up open label period, clinical outcome was assessed by neuropsychological examination using the Alzheimer’s Disease Assessment Scale—cognitive subscale as the primary outcome measure. Electroencephalography and [ 18 F]-fluoro-desoxyglucose positron emission tomography were, besides others, secondary endpoints. On the basis of stable or improved primary outcome parameters twelve months after surgery, four of the six patients were considered responders. No severe or non-transitional side effects related to the stimulation were observed. Taking into account all limitations of a pilot study, we conclude that DBS of the NBM is both technically feasible and well tolerated.
Association of anemia and hypoalbuminemia in German geriatric inpatients
Background Anemia and hypoalbuminemia (HA) are acknowledged independent risk factors for morbidity and mortality in geriatric patients and are associated with nutritional status and frailty. Data exist regarding the association between albumin and frailty, anemia and frailty as well as frailty and nutritional status; however, there is a lack of information on the association between HA, anemia and nutritional status in older people. Patients and methods This study retrospectively analyzed 626 patients admitted to a German geriatrics department (average age 81.1 years, 68.2 % female and 31.8 % male) for anemia and HA. Data from the comprehensive geriatric assessment (CGA) and from the mini-nutritional assessment (MNA) were available in all patients. Results Patients with anemia suffered significantly more often from HA ( p  < 0.001) than patients without anemia, with an odds ratio (OR) of 1.99 (95 % confidence interval CI: 1.2-3.2) and of 5.41 (CI 95 %: 2.3-12.6) in patients at risk for malnutrition and in malnourished patients, respectively. A moderately significant association was seen between hemoglobin (Hb) and albumin values (Pearson’s correlation r  = 0.330; p  < 0.001) as well as between albumin values and the Barthel index (Spearman’s correlation r  = 0.210; p  < 0.001). Conclusion Anemia appears to be a risk factor for HA in inpatients with malnutrition and the observed association between albumin and Hb warrants further research. Geriatric inpatients with anemia should be evaluated in terms of the presence of malnutrition risk and HA.
Effects of inpatient geriatric interventions in a German geriatric hospital
Background Given the demographic changes, the need for effective geriatric intervention is obvious. Geriatric care aims to maintain the highest possible level of independence and quality of life and to reduce the risk of need for care. Objectives This study investigated the benefits of geriatric care on functional performance, mobility and cognition. Material and methods This study involved a retrospective analysis of clinical data from 646 patients. At hospital admission and discharge functional status was assessed using the Barthel index. Mobility was evaluated by means of the Tinetti test and cognition by the mini-mental state examination (MMSE). A follow-up was conducted on 112 patients 2–5 months after hospital discharge. Statistical analysis included t-tests including Cohen's d for effect size and multivariate regression analysis. Results The mean age of the study population was 81.1 ± 7.1 years including 439 women  (68 %) and 207 men  (32 %). There were significant average improvements for activities of daily living (ADL), mobility and cognition comparing discharge and admission scores. For functional and mobility status, effect sizes were medium to high. Regression analyses showed that ADL improvement was predicted by functional, mobile and cognitive status at admission. Follow-up analyses revealed a high percentage of former patients still living at home and an overall maintenance of ADL levels. Conclusion Geriatric patients seem to experience long-term improvements during geriatric treatment, which appears to fulfill its aim of recovering independence. For a better understanding of relevant factors for the recreation of geriatric patients, further research is needed, e.g. with respect to the impact of the nutritional status.
Changes in nutritional status after deep brain stimulation of the nucleus basalis of Meynert in Alzheimer's disease — Results of a phase I study
The progression of Alzheimer's disease (AD) is associated with impaired nutritional status. New methods, such as deep brain stimulation (DBS), are currently being tested to decrease the progression of AD. DBS is an approved method in the treatment of Parkinson's disease, and its suitability for the treatment of AD patients is currently under experimental investigation. To evaluate the advantages and disadvantages of this new treatment, it is important to assess potential side effects of DBS regarding the nucleus basalis of Meynert; this new treatment is thought to positively affect cognition and might counteract the deterioration of nutritional status and progressive weight loss observed in AD. This study aims to assess the nutritional status of patients with AD before receiving DBS of the nucleus basalis of Meynert and after 1 year, and to analyze potential associations between changes in cognition and nutritional status. A 1-year phase I proof-of-concept study. The Department of Psychiatry and Psychotherapy at the University of Cologne. We assessed a consecutive sample of patients with mild to moderate AD (n=6) who fulfilled the inclusion criteria and provided written informed consent. Intervention: Bilateral low-frequency DBS of the nucleus basalis of Meynert. Nutritional status was assessed using a modified Mini Nutritional Assessment, bioelectrical impedance analysis, a completed 3-day food diary, and analysis of serum levels of vitamin B12 and folate. With a normal body mass index (BMI) at baseline (mean 23.75 kg/m2) and after 1 year (mean 24.59 kg/m2), all but one patient gained body weight during the period of the pilot study (mean 2.38 kg, 3.81% of body weight). This was reflected in a mainly stable or improved body composition, assessed by bioelectrical impedance analysis, in five of the six patients. Mean energy intake increased from 1534 kcal/day (min 1037, max 2370) at baseline to 1736 kcal/day (min 1010, max 2663) after 1 year, leading to the improved fulfillment of energy needs in four patients. The only nutritional factors that were associated with changes in cognition were vitamin B12 level at baseline (Spearman's rho = 0.943, p = 0.005) and changes in vitamin B12 level (Spearman's rho = −0.829, p = 0.042). Patients with AD that received DBS of the nucleus basalis of Meynert demonstrated a mainly stable nutritional status within a 1-year period. Whether DBS is causative regarding these observations must be investigated in additional studies.
Prescription errors in geriatric patients can be avoided by means of a computerized physician order entry (CPOE)
Background The implementation of a computerized physician order entry (CPOE) can help reduce prescription errors in clinical practice. Objective The aim of this study was to evaluate the effects of a CPOE for geriatric patients with the two most common conditions for drug-induced iatrogenic diseases, dysphagia and renal failure. Subjects and methods A retrospective analysis of actual drug prescriptions versus CPOE recommendations in the geriatric department of the St. Marien Hospital in Cologne, Germany was carried out. Actual drug prescriptions were collected for 26 patients with dysphagia (15 female, 11 male, average age 82.3 ± 8.0 years) and 35 patients with renal failure (23 female, 12 male, average age 80.5 ± 6.7 years) which were compared with recommended prescriptions by means of a CPOE and discrepancies were statistically analyzed. Results Prescription errors for at least 1 drug were detected in 46 % of patients with renal failure and the administration of at least 1 drug with inadequate crushing was observed in 77 % of dysphagia patients. Conclusion Prescription errors appear to be frequent to highly frequent in the medical routine even in a highly specialized geriatric setting. Inaccuracies might be reduced by the implementation of a CPOE and even more if coupled to a decision support system. Drug-drug or drug-disease interactions, which are particularly high risks in patients with multimorbidities, multidrug therapy, renal failure or malnutrition, might be kept under control through careful verification of medication indications, organ function status as well as drug administration and preparation in cases of tube feeding.
Nutraceuticals in cognitive impairment and Alzheimer's disease
Several chemical substances belonging to classes of natural dietary origin display protective properties against some age-related diseases including neurodegenerative ones, particularly Alzheimer's disease (AD). These compounds, known as nutraceuticals, differ structurally, act therefore at different biochemical and metabolic levels and have shown different types of neuroprotective properties. The aim of this review is to summarize data from observational studies, clinical trials, and randomized clinical trials (RCTs) in humans on the effects of selected nutraceuticals against age-related cognitive impairment and dementia. We report results from studies on flavonoids, some vitamins and other natural substances that have been studied in AD and that might be beneficial for the maintenance of a good cognitive performance. Due to the substantial lack of high-level evidence studies there is no possibility for recommendation of nutraceuticals in dementia-related therapeutic guidelines. Nevertheless, the strong potential for their neuroprotective action warrants further studies in the field.
Analysis of cytopenia in geriatric inpatients
Background Peripheral blood dyscrasias in older patients are repeatedly seen in geriatric clinical practice; however, there is substantial lack of data about the epidemiology, possible causes and treatment options in this patient group. Proton pump inhibitors (PPI) are extensively used in older patients and associated with leukopenia. The primary objective of this study was the assessment of encoded cytopenia prevalence in a geriatric patient cohort and the secondary objective was the assessment of putative causes and the analysis of PPI administration in patients with cytopenia. Methods Retrospective evaluation of patients admitted to the geriatric department of a German urban hospital between 2010 and 2012. Electronic patient data were screened for encoded diagnosis of cytopenia according to the International Classification of Diseases (ICD) 10. Inclusion criteria were ICD code D69.0–9 and/or D70.0–7, age ≥60 years and exclusion criteria were no ICD code D69.0–9 and/or D70.0–7 and age <60 years. Out of 9328 screened inpatients 54 patients remained for analysis. Study parameters included hemoglobin (Hb), red blood cell count (RBC), leucocytes, platelets, mean cell volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), red cell distribution width (RDW), presence of leukopenia (<4000/µl), presence of thrombocytopenia (<140,000/µl) and presence of anemia according to the World Health Organization (WHO). Substitution of blood products, medication with PPI and potential causes for dyscrasias were evaluated based on electronic patient records. Results The mean age was 78.3 ± 6.5 years (27 females, 27 males), anemia was seen in 78%, leukopenia was encoded in13% and thrombocytopenia in 44.4%. In most of the patients no substitution of blood products was documented. In most of the patients (20.4%) cytopenia was attributed to either heparin-induced thrombocytopenia (HIT) or hemato-oncologic (20.4%) diseases, followed by drug association in 18.5%. In 70.8% of the study patients PPIs were administered but the indication for PPI administration remained unclear in 20.4%. Conclusion The results encourage accurate assessment of blood dyscrasias and appropriate documentation as well as indication check for PPI treatment in geriatric inpatients.
Which are the most efficient items of mini nutritional assessment in multimorbid patients?
Objective: The aim of the study was to identify the most significant MNA-items to accelerate the determination of nutritional risk of elderly patients in routine clinical practice in a geriatric hospital. Since MNA requires 10–15 min it is hardly applicable to clinical routine.Design: The study was a cross-sectional study. Setting: The study centre was an acute geriatric hospital. Participants: In total 808 multimorbid elderly patients were recruited. Methods: We applied the MNA in 808 (528f/280m) geriatric multimorbid patients (78.5 ± 8.7f / 74.6 ± 9m yrs) without cognitive impairment 48h after hospital admission. Admission diagnoses covered orthopaedical (40%), internal (34%) and cerebrovascular (24%) diseases. According to analysis of reliability the consistency of the MNA scale for multimorbid patients has been verified. In preparation for scale reduction a factor analysis was applied. A reduced scale with selected cutoffs was configured and compared with MNA.Results: According to MNA, 15% of patients were well-nourished, 65% at risk of malnutrition and 20% were malnourished. The reliability analyses showed a Cronbach's Alpha of 0.60 that represented a satisfactory result. By means of factor analysis the MNA-items were reduced from 18 to 7 items (weight loss, mobility, BMI, number of full meals, fluid consumption, mode of feeding, health status), with new cutoffs (12.5–15 well-nourished, 9–12 at risk of malnutrition, <9 malnourished). According to the modified MNA (m-MNA) 21.7% of the patients were well-nourished, 54.5% at risk of malnutrition and 21.7% were malnourished. The score of the MNA and m-MNA correlated with r=0.910. Furthermore, there was a strong correlation between MNA and m-MNA group classification of 83%.Conclusion: The m-MNA enables a rapid (3min) and efficient screening of malnutrition in multimorbid geriatric patients. The m-MNA is easy to apply and may also be suitable in multimorbid patients with cognitive dysfunction. Due to the variety of items the m-MNA seems to be superior to other screening tools.
Does the identification of seniors at risk (ISAR) score effectively select geriatric patients on emergency admission?
The number of older patients admitted to emergency departments (ED) increases continuously. The Identification of Seniors at Risk (ISAR) score is currently recommended to screen patients in German ED, but its appropriateness is being criticized. ISAR scores and clinical characteristics from 98 emergency admissions (EA), 80 from acute geriatrics (AG) and 89 from a geriatric rehabilitation (GR) unit were compared retrospectively. No significant differences were found between groups, being the ISAR score positive in 87.7% of EA, 94.9% of AG and 94.4% of GR cases. None of positively identified geriatric patients in the EA was transferred to the geriatric ward of competence. EA patients showed significantly higher number of functional impairments ( p  = 0.001) and higher BI score ( p  < 0.0001) compared to AG and GR groups. A higher ISAR score threshold and additional functional information might be needed to better select patients in need of prompt treatment by a geriatric team.