Macht – Hilfe – Kontrolle. Grundlegungen und Erweiterungen eines systemisch-konstruktivistischen Machtmodells

Konstruktivistischen Positionen wird des Öfteren eine unüberwindbare Befangenheit in der Subjektperspektive vorgeworfen. Es sei aus dieser Perspektive nicht möglich, so heißt es, die Bedeutung des Sozialen und der Umwelt für den Menschen angemessen zu berücksichtigen oder gar zu erklären, und so müssten etwa Fragen der Macht und Kontrolle notwendig ausgeblendet werden. Diesen Vorwürfen soll hier ein Machtansatz entgegengestellt werden, der auf einem erkenntnistheoretischen Konstruktivismus basiert. Im Rahmen dieses Beitrags wird das Phänomen „Macht“ aus dieser Perspektive erörtert und im Unterschied zu den gerade im radikalkonstruktivistischen „Machtdiskurs“ üblichen „Entweder-oder-Positionen“ (entweder gibt es Macht oder eben nicht) eine „Sowohl-als-auch-Position“ vorgestellt werden. Den Nutzen der Differenzierung in „instruktive Macht“ vs. „destruktive Macht“ verdeutlicht der Beitrag exemplarisch durch die Anwendung auf die Frage nach den Möglichkeiten von Hilfe und Kontrolle in der Sozialen Arbeit. (DIPF/Orig.)

Lebenswelt und Lebensweltorientierung. Eine begriffliche Revision als Angebot an eine systemisch-konstruktivistische Sozialarbeitswissenschaft

Der Begriff der Lebenswelt ist im Diskurs der Sozialen Arbeit inzwischen ebenso geläufig wie die Forderung nach der Orientierung an eben dieser Lebenswelt. Der geradezu inflationäre Gebrauch des Begriffes geht jedoch mit einer nicht eben geringen begrifflichen „Unschärfe“, um nicht zu sagen Beliebigkeit einher. Angesichts dessen, erscheint mir schon alleine aus Gründen der innerdis-ziplinären Verständigung eine Präzisierung des Begriffs der Lebenswelt geboten. Dies soll nachfolgend zumindest in groben Zügen geleistet werden. Hierbei sollen zwar auch die phänomenologischen Wurzeln des Lebensweltbegriffes in den Blick genommen werden, vor allem aber soll eine systemisch-konstruktivistische Begriffsbestimmung vorgenommen werden. Hierzu wird, ausgehend von der Relevanz des Lebensweltkonzeptes für den Bereich der Sozialen Arbeit, zunächst die phänomenologische Herkunft des Lebensweltbegriffes zumindest skizziert. Daran anknüpfend wird eine systemisch-konstruktivistische Reformulierung des Lebensweltbegriffes vorgeschlagen, die einer systemisch-konstruktivistisch orientierten Wissenschaft der Sozialen Arbeit entspricht. (DIPF/Orig.)

Telmisartan to prevent recurrent stroke and cardiovascular events

Background Prolonged lowering of blood pressure after a stroke reduces the risk of recurrent stroke. In addition, inhibition of the renin–angiotensin system in high-risk patients reduces the rate of subsequent cardiovascular events, including stroke. However, the effect of lowering of blood pressure with a renin–angiotensin system inhibitor soon after a stroke has not been clearly established. We evaluated the effects of therapy with an angiotensin-receptor blocker, telmisartan, initiated early after a stroke. Methods In a multicenter trial involving 20,332 patients who recently had an ischemic stroke, we randomly assigned 10,146 to receive telmisartan (80 mg daily) and 10,186 to receive placebo. The primary outcome was recurrent stroke. Secondary outcomes were major cardiovascular events (death from cardiovascular causes, recurrent stroke, myocardial infarction, or new or worsening heart failure) and new-onset diabetes. Results The median interval from stroke to randomization was 15 days. During a mean followup of 2.5 years, the mean blood pressure was 3.8/2.0 mm Hg lower in the telmisartan group than in the placebo group. A total of 880 patients (8.7%) in the telmisartan group and 934 patients (9.2%) in the placebo group had a subsequent stroke (hazard ratio in the telmisartan group, 0.95; 95% confidence interval [CI], 0.86 to 1.04; P = 0.23). Major cardiovascular events occurred in 1367 patients (13.5%) in the telmisartan group and 1463 patients (14.4%) in the placebo group (hazard ratio, 0.94; 95% CI, 0.87 to 1.01; P = 0.11). New-onset diabetes occurred in 1.7% of the telmisartan group and 2.1% of the placebo group (hazard ratio, 0.82; 95% CI, 0.65 to 1.04; P = 0.10). Conclusions Therapy with telmisartan initiated soon after an ischemic stroke and continued for 2.5 years did not significantly lower the rate of recurrent stroke, major cardiovascular events, or diabetes. (ClinicalTrials.gov number, NCT00153062.)

Aspirin and extended-release dipyridamole versus clopidogrel for recurrent stroke

Background Recurrent stroke is a frequent, disabling event after ischemic stroke. This study compared the efficacy and safety of two antiplatelet regimens — aspirin plus extendedrelease dipyridamole (ASA–ERDP) versus clopidogrel. Methods In this double-blind, 2-by-2 factorial trial, we randomly assigned patients to receive 25 mg of aspirin plus 200 mg of extended-release dipyridamole twice daily or to receive 75 mg of clopidogrel daily. The primary outcome was first recurrence of stroke. The secondary outcome was a composite of stroke, myocardial infarction, or death from vascular causes. Sequential statistical testing of noninferiority (margin of 1.075), followed by superiority testing, was planned. Results A total of 20,332 patients were followed for a mean of 2.5 years. Recurrent stroke occurred in 916 patients (9.0%) receiving ASA–ERDP and in 898 patients (8.8%) receiving clopidogrel (hazard ratio, 1.01; 95% confidence interval [CI], 0.92 to 1.11). The secondary outcome occurred in 1333 patients (13.1%) in each group (hazard ratio for ASA–ERDP, 0.99; 95% CI, 0.92 to 1.07). There were more major hemorrhagic events among ASA–ERDP recipients (419 [4.1%]) than among clopidogrel recipients (365 [3.6%]) (hazard ratio, 1.15; 95% CI, 1.00 to 1.32), including intracranial hemorrhage (hazard ratio, 1.42; 95% CI, 1.11 to 1.83). The net risk of recurrent stroke or major hemorrhagic event was similar in the two groups (1194 ASA–ERDP recipients [11.7%], vs. 1156 clopidogrel recipients [11.4%]; hazard ratio, 1.03; 95% CI, 0.95 to 1.11). Conclusions The trial did not meet the predefined criteria for noninferiority but showed similar rates of recurrent stroke with ASA–ERDP and with clopidogrel. There is no evidence that either of the two treatments was superior to the other in the prevention of recurrent stroke. (ClinicalTrials.gov number, NCT00153062.)

The ranks of the homotopy groups of odd degree of a finite complex

Special Issue in honor of Prof. Hans-Bjørn Foxby

Effects of truck traffic on top-down fatigue cracking performance of flexible pavements using a new mechanics-based analysis framework

The mechanics-based analysis framework predicts top-down fatigue cracking initiation time in asphalt concrete pavements by utilising fracture mechanics and mixture morphology-based property. To reduce the level of complexity involved, traffic data were characterised and incorporated into the framework using the equivalent single axle load (ESAL) approach. There is a concern that this kind of simplistic traffic characterisation might result in erroneous performance predictions and pavement structural designs. This paper integrates axle load spectra and other traffic characterisation parameters into the mechanics-based analysis framework and studies the impact these traffic characterisation parameters have on predicted fatigue cracking performance. The traffic characterisation inputs studied are traffic growth rate, axle load spectra, lateral wheel wander and volume adjustment factors. For this purpose, a traffic integration approach which incorporates Monte Carlo simulation and representative traffic characterisation inputs was developed. The significance of these traffic characterisation parameters was established by evaluating a number of field pavement sections. It is evident from the results that all the traffic characterisation parameters except truck wheel wander have been observed to have significant influence on predicted top-down fatigue cracking performance.

The effect of a Computerised Decision Support System (CDSS) on compliance with the prehospital assessment process: results of an interrupted time-series study

BACKGROUND: Errors in the decision-making process are probably the main threat to patient safety in the prehospital setting. The reason can be the change of focus in prehospital care from the traditional "scoop and run" practice to a more complex assessment and this new focus imposes real demands on clinical judgment. The use of Clinical Guidelines (CG) is a common strategy for cognitively supporting the prehospital providers. However, there are studies that suggest that the compliance with CG in some cases is low in the prehospital setting. One possible way to increase compliance with guidelines could be to introduce guidelines in a Computerized Decision Support System (CDSS). There is limited evidence relating to the effect of CDSS in a prehospital setting. The present study aimed to evaluate the effect of CDSS on compliance with the basic assessment process described in the prehospital CG and the effect of On Scene Time (OST). METHODS: In this time-series study, data from prehospital medical records were collected on a weekly basis during the study period. Medical records were rated with the guidance of a rating protocol and data on OST were collected. The difference between baseline and the intervention period was assessed by a segmented regression. RESULTS: In this study, 371 patients were included. Compliance with the assessment process described in the prehospital CG was stable during the baseline period. Following the introduction of the CDSS, compliance rose significantly. The post-intervention slope was stable. The CDSS had no significant effect on OST. CONCLUSIONS: The use of CDSS in prehospital care has the ability to increase compliance with the assessment process of patients with a medical emergency. This study was unable to demonstrate any effects of OST.

Sobreuso de analgésicos en pacientes con cefaleas primarias de un centro de referencia de Medellín

Introducción: Los pacientes con cefaleas primarias están predispuestos a desarrollar una cefalea secundaria al consumo excesivo de analgésicos. En nuestro medio, la adquisición fácil de medicamentos sin fórmula médica incrementa su frecuencia de presentación. Objetivo: Describir el perfil epidemiológico, clínico y de tratamiento de los pacientes con cefaleas primarias y cefalea secundaria por sobreuso de analgésicos atendidos en el programa especial de cefaleas del Instituto Neurológico de Colombia en el periodo 2014-2015. Pacientes y métodos: estudio descriptivo, retrospectivo. Se evaluaron características de la cefalea, comorbilidades, discapacidad y patrón de consumo de medicamentos. Resultados: Se incluyeron 834 pacientes con diagnóstico de cefalea por sobreuso de analgésicos, 85.1% con migraña crónica. El 87.6% de los pacientes eran mujeres y tenían 44 años en promedio. La mitad de los pacientes tomaba analgésicos todos los días de la semana (P25-P75: 4 – 7 días); consumiendo, en promedio, tres analgésicos/día (DE: 1.9). La mayoría de pacientes presentaba un consumo elevado de analgésicos simples (95.2%), AINES (92.2%) y analgésicos combinados (89.2%); 51% consumían opiodes y sólo 14.6% consumían triptanes. Conclusión: La identificación de esta cefalea secundaria es de vital importancia para un tratamiento adecuado. El uso medicamentos de libre venta afecta el manejo óptimo de esta entidad asociada a las cefaleas primarias, principalmente la migraña.

Percepción de los trabajadores acerca de la seguridad en el trabajo en una empresa del sector de gas natural en Casanare

Introducción: La percepción puede ser considerada principalmente como un grupo de procesos internos en las personas que genera en los observadores una representación mental del entorno. Percibir es adelantarse al suceso, a lo que puede llegar a suceder, determinando lo que puede ser un peligro a nuestra seguridad y salud. Objetivo: El presente estudio tiene como objetivo determinar la percepción de los trabajadores acerca de la seguridad en el trabajo en áreas de procesos automatizados y mecánicas en una empresa del sector de gas natural en el departamento de Casanare, Colombia 2016. Metodología: Se llevó a cabo un estudio de corte transversal en 50 trabajadores de una empresa del sector de gas natural en Casanare. Se uttilizó el Cuestionario nórdico NOSACQ-50-Spanish, instrumento validado para evaluar la percepción acerca de la seguridad y salud en el lugar de trabajo. Se incluyeron variables sociodemográficas, laborales y las relacionadas con la percepción de la seguridad en el lugar del trabajo. Para el análsiis estadistico se calcularon medidas de tendencia central y de dispersión. El estudio de la percepción de seguridad tuvo como puntos de corte: < 2,5 mala percepción y > 2,5 buena percepción. Se emplearon pruebas de asociación X2 o test exacto de Fisher (valores esperados <5) y medidas de asociación OR con sus intervalos de confianza del 95% y se usaron modelos de regresión lineal. Resultados: El total de trabajadores fue de 50 personas, el 76% correspondió al sexo masculino y la mayor distribución se presentó en áreas mecánicas con 52% frente al 48% que se encontró en áreas automatizadas. Se halló asociación estadísticamente significativa entre las variables sociodemográficas área/sexo (Pr = 0,016), indicando que a los trabajadores de sexo femenino se les ubican en el área mecánica mientras que los de sexo masculino, laboran en todas las áreas sin darle relevancia al género. También se encontró asociación con las variables área/año de nacimiento (Pr =0.022), indicando que en el área automatizada se dejan profesionales con promedio de edad de 32 años, por el tipo de requisitos en competencias que exigen para ejecutar las labores. Para las demás variables ocupacionales que evaluaron la percepción de seguridad frente al trabajo, no se encontró asociación significativa. Conclusión: Los resultados permiten realizar acciones en pro de mejorar la percepción de los trabajadores dentro de la organización. Se podrán desarrollar programas de seguridad y salud en el trabajo, que respondan de manera efectiva a los peligros laborales detectados.

An alternative fish feed based on earthworm and fruit meals.

2015

Projeto de intervenção junto aos portadores de síndrome metabólica do centro de saúde Cabana, município de Belo Horizonte, Minas Gerais

O Centro de Saúde Cabana está localizado na região oeste de Belo Horizonte, e fica sob a responsabilidade do distrito Sanitário Oeste. A partir de uma estimativa rápida realizada no Centro de Saúde, foi possível identificar os problemas de saúde mais relevantes que incidem sobre a população da Equipe 1 suas causas e consequências. Observou-se a alta prevalência da síndrome metabólica na população atendida. A Síndrome Metabólica resulta de um agrupamento de um conjunto de fatores de risco cardiovascular. É uma enfermidade particularmente importante, que tem preocupado a comunidade médica e científica a nível mundial uma vez que a sua prevalência está aumentando gradualmente, tanto em adultos como em crianças, e está fortemente associada ao aumento do risco de desenvolvimento de doenças cardiovasculares e mortalidade. Tendo em vista sua prevalência, faz-se necessário um plano de ação para combater os nós críticos e amenizar ou efetivamente transformar esse problema. Trata-se de um estudo que visa propor um plano de intervenção para a melhoria dos hábitos de vida dos indivíduos com Síndrome metabólica. A metodologia utilizada foi o diagnóstico situacional utilizando o método de estimativa rápida, revisão literária selecionando artigos, dissertações e teses nas bases de dados Scentifc Electronic Library Online (Scielo), Literatura Latino-Americana e do Caribe em Ciência da Saúde (LILACS) e Biblioteca Virtual em Saúde (BVS). Também foram utilizados sítios eletrônicos institucionais e manuais do Ministério da Saúde e elaboração de um projeto de intervenção utilizando o Planejamento de Estratégico Situacional (PES). A síndrome metabólica é uma "doença" da civilização atual e foi identificada como um problema relevante no Centro de Saúde Cabana. A implantação do projeto de intervenção proposto irá a aumentar o conhecimento dos usuários em relação à doença, riscos, hábitos de vida saudáveis para ajudar no controle. Espera-se que os usuários possam mudar seus hábitos e estilos de vida, manterem uma vida saudável.