Plastinación de cerebro y corazón con resina de poliéster.

Introduction: Plastination has been shown as a revolutionary and innovative technique in the field of conservation of anatomical pieces created by Gunther Von Hagens. Taking into account that the study of anatomy is currently based on the conservation and study of cadavers and anatomical specimens that are increasingly difficult to acquire and that allow a clear learning being useful for the training of undergraduate, graduate and professional exercise students and that can be preserved over time despite their continuous manipulation; it also allows to minimize biological risks for those in the area of health who are in the field of morphological sciences. In this way the anatomical details that in practice with corpses that are in preservation with formalin are lost, destroyed or difficult to visualize will be optimized and maintained. Objectives: Standardize an economic technique of plastination for the didactic study of morphology, through the use of polyester resins in organs, in addition to reducing the biological risk in the management of study specimens generating anatomical models that are easily accessible. Methods: A retrospective analysis of the materials and methods previously used in the research groups of the University of the Forest was carried out to make a subsequent selection of specimens to be used according to their frequency of use, as well as an observation of easily accessible tissue preservation materials without prior evidence, finding as objectives the heart of pig and the brain with respect to raw material and polyester resin as polymer. Results: In this study two specimens (human and pig) were taken from which five cuts were taken from the different planes to perform this plastination technique in which the anatomical composition, muscles and different vessels were identified. Once the plastination technique was explored in these fresh specimens, changes were observed, some slight in the different variables such as dimensions, color, texture and shape, but that meet the expectations of preserving a specimen for teaching purposes. Based on observation and analysis, the behaviour of these variables in the anatomical parts before and after the plastination process is determined. In addition, by the simple correlation method, sample behavior in texture, flexibility, retraction and pig or human anatomical details could be determined. In graph 1, we can observe by comparison the variations in color that were noticed from the first phase of the process. It is observed that in the dehydration phase a lighter shade is achieved but subsequently in the phase of forced impregnation reaches darker shades varying to brown; subsequently a recovery of the color in the drying phase was evident, with whitening of the anatomical parts where clear differences are possible. As for the texture it is observed that in both specimens the samples acquired hardness and rigidity at the time of dehydration with acetone, so it is inferred that losing water and bodily fluids is lost by this process the flexibility is also lost and the organ acquires greater rigidity, which provides greater resistance to manipulation. Based on the retraction of the organs and taking into account that the technique of plastination in one of its stages in the dehydration of the structure is explained because they are retracted. In the preservation of anatomical details it was found that both organs can be clearly and accurately identified the different anatomical accidents of importance Conclusions: Plastination becomes a significant learning building element, either for the student based on anatomy knowledge, while reducing safety concerns over the use of formaldehyde due to the health risks of teachers and students exposed. In order to meet the objective of this research project, the technique of plastination in pig and human brain hearts was standardized, which developed a protocol that includes the chemicals used and the times used at each stage of that procedure. As for the results, differences were found in the variables such as weight, thickness, texture after the realization of said technique preserved in whether the anatomical details and allowing the proper study of the organ. [ABSTRACT FROM AUTHOR]