[Educational film on the geriatric basic assessment in primary care-Methods of cinematic authenticity]. / Lehrfilm über das geriatrische Basisassessment in der hausärztlichen Versorgung ­ Methoden filmischer Authentizität.

BACKGROUND: The relevance of care of older persons in general practice requires the conveyance of procedural and conditional knowledge of the geriatric basic assessment (GBA) even during medical studies. There is a need for action with respect to student knowledge on specific problems of older patients. This paper describes how the primary care situation can be made tangible for students based on a film project at the Hannover Medical School (MHH). METHOD: During film production, strategies for creating authenticity were applied using cinematic means. The film is used in the teaching module of family medicine at MHH. Student evaluation investigated whether the educational film provided an emotional experience and whether the presentation mode of the GBA was perceived as authentic. RESULTS: The majority of students were emotionally touched by the film. The educational film was successful in conveying the complexity of care of older people and in presenting the special role of family physicians in geriatric care. DISCUSSION: The students recognized the necessity of the GBA and found the representation predominantly realistic; however, individual cinematic reception and previous experiences also influence the perception of the cinematic form with respect to the representation of reality. This method might improve the conveyance of authenticity in educational videos in medicine.

Mapping the geogenic radon potential in Germany.

Mapping the geogenic radon potential in Germany is a research project initiated by the German Federal Ministry for the Environment, Conservation and Reactor Safety. The project was aimed to develop a standard methodology for the estimation of a geogenic radon potential and to apply this method to map the region of Germany as an overview for planning purposes. The regionalisation results from a distance-weighted interpolation of the site-specific values of radon concentration in soil gas and in situ gas permeability of soils on a regular grid considering the corresponding geological units. The map of Germany in a scale of 1:2 million is based on the radon concentration in soil gas as an estimator of the geogenic radon potential assuming the 'worst case' of uniform highest permeability. The distribution is subdivided into categories of low (< 10 kBq/m3), medium (10-100 kBq/m3), increased (100-500 kBq/m3) and high (> 500 kBq/m3) radon concentration. High values occur especially in regions with granites and basement rocks of Paleozoic age, and are proven by measurements in 0.03% of the total area. Many of these regions are also known for their enhanced indoor values. The class with increased values takes a portion of 7.86% and likewise occurs mainly in regions with outcrops of folded and metamorphic basement, but also of some Meso- and Cenozoic sediments with increased uranium contents and/or higher emanation coefficients. For 67.3% of the country, the radon concentration is classified as 'medium', and an assignment to specific geological units cannot be made at the map scale considered. Low radon contents, where protective measures against radon are usually not considered, are found in the geologically rather homogeneous part of northern Germany with unconsolidated Cenozoic sediments, covering approximately 25% of the total country. It is of course not possible to predict the indoor radon concentration of single houses from these maps, because construction type and structural fabric of houses are essentially governing the extent to which subsoil radon potential affects the indoor concentration. Besides this, in places with site-specific geochemical, structural and soil-physical properties, local radon anomalies may occur which were not recorded in the course of the wide-meshed screening study.