Análisis de los criterios de valoración utilizados para casos de pensión vitalicia en un niño con Autismo. Reporte de un caso con enfoque médico legal / Analysis of the evaluation criteria used for life pension cases in a child with Autism. Report of a case with a forensic medical approach

El Trastorno del Espectro Autista (TEA), es trastorno del neurodesarrollo que se caracteriza por algún grado de dificultad en la interacción social y la comunicación, que comienza en el periodo de desarrollo temprano, y se clasifica según el grado de severidad en grado 1, 2 y 3, según lo establecido en el DSM-5. Dicho Trastorno se encuentra abarcado por la Ley 7125 de Pensión Vitalicia para Personas con Parálisis Profunda, y su reforma 8769. Con el objetivo de analizar los criterios establecidos para la valoración de estos procesos, se presenta el caso de una persona masculina de 6 años con diagnóstico de TEA, de quien se interpuso demanda para ser tomado en cuenta dentro de dicha Ley. En el mismo y tras el análisis respectivo, de acuerdo con los datos de la literatura científica actualizada, y de los criterios establecidos, se pudo constatar que si calificaba según lo indicado en la Ley 7125.

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder that is characterized by some degree of difficulty in social interaction and communication, which begins in the early development period, and is classified according to the degree of severity in grade 1, 2 and 3, as established in the DSM-5. Said Disorder is covered by Law 7125 of Life Pension for people with deep cerebral palsy, and its reform 8769. In order to analyze the criteria established for the assessment of these processes, the case of a 6-year-old male person with diagnosis of ASD, of whom a lawsuit was filed to be taken into account within said Law. In it and after the respective analysis, according to the data of the updated scientific literature, and the established criteria, it was possible to verify that if qualified as indicated in Law 7125.

Continuing education for forensic medical analysis of the constitutional appeals in Costa Rica / Formação acadêmica contínua para análise médico forense de recursos de amparo na Costa Rica / Formación académica continua para el análisis médico forense de recursos de amparo en Costa Rica

Introduction: Judicially demanding the right to health involves different elements and can lead to changes in continuing education programs. The current trend is to follow this pathway to access low-frequency and high-cost medications. In addition, the Constitutional Court of Costa Rica requests a technical concept from forensic doctors. Objective: To raise the need for continuous updating in specific theoretical-practical academic knowledge required by forensic doctors to guarantee the right to health services. Reflection: The training of forensic medical doctors is focused on evidence and encourages continuous education. Nevertheless, a commitment is necessary in continuing medical education programs such as literature search strategies, critical assessment of evidence, and academic practices that incorporate particular circumstances comparing them with scientific studies. These programs must take into account prevalent medications and pathologies as well as technical-scientific factors that differ in each service provider. Conclusion: A continuing education program about the interpretation and assessment of scientific evidence for proper decision making on health issues would allow medical doctors to judge existing health problems and choose a medication that is the most beneficial for a patient.

Introducción: La judicialización del derecho a la salud involucra a distintos actores y puede propiciar cambios en programas de educación continua; pues la tendencia actual es recurrir a esta vía para acceder a medicamentos de baja frecuencia y alto costo. Adicionalmente, en Costa Rica la Sala Constitucional solicita el criterio técnico a médicos forenses. Objetivo: Plantear la necesidad de actualización continua en conocimientos académicos teóricos-prácticos específicos que requiere el médico forense para garantizar el derecho a los servicios de salud. Reflexión: El médico forense cuenta con formación basada en evidencias y se incentiva su formación continua, sin embargo, es necesario un compromiso con los programas de educación médica continua: en estrategias de búsqueda de literatura, valoración crítica de la evidencia encontrada y práctica académica que incorpore las circunstancias particulares, comparándolo con los resultados de estudios científicos; tomando en cuenta medicamentos y patologías prevalentes y los factores técnico-científicos de divergencia entre los prestadores de servicios. Conclusión: Un programa de formación continua sobre interpretación y valoración de la evidencia científica para la toma de decisiones en salud, permitiría a estos especialistas responder con mejor criterio si un medicamento es el tratamiento más beneficioso para un paciente debido a sus problemas de salud.

Introdução: A judicialização do direito à saúde envolve diferentes atores e pode promover mudanças nos programas de educação continuada; porque a tendência atual é recorrer a esta via para ter acesso a medicamentos de baixa frequência e alto custo. Além disso, na Costa Rica, o Tribunal Constitucional solicita critérios técnicos aos médicos forenses. Objetivo: Levantar a necessidade de atualização contínua em conhecimentos acadêmicos teórico-práticos específicos que o médico forense necessita para garantir o direito aos serviços de saúde. Reflexão: O médico forense tem formação baseada em evidências e sua formação continuada é incentivada, porém é necessário o compromisso com programas de educação médica continuada: em estratégias de busca bibliográfica, avaliação crítica das evidências encontradas e prática acadêmica que incorpore as circunstâncias particulares , comparando-o com resultados de estudos científicos; levando em consideração medicamentos e patologias prevalentes e fatores técnico-científicos de divergência entre prestadores de serviços. Conclusão: Um programa de formação contínua sobre interpretação e avaliação de evidências científicas para a tomada de decisões em saúde, permitiria a estes especialistas responder com melhores critérios se um medicamento é o tratamento mais benéfico para um paciente devido aos seus problemas de saúde.

Análisis médico legal de la fractura de órbita por "blow out" o estallido: reporte de caso / Medical-legal analysis of blow out fracture of the orbit: case report

La fractura orbitaria por estallido o fractura en "blow out" es una de las fracturas más comunes a nivel facial por lo que su importancia reside en saber identificarlas por el enmascaramiento clínico que podría o no, estar presente. Es de vital importancia complementar la valoración clínica con estudios de imagenología que confirmen las sospechas clínicas. De no hacerlo si el paciente no consulta a un servicio médico quirúrgico la pérdida de la capacidad funcional o la debilitación persistente en la salud ocasionada por la fractura no podrá ser validada en un Dictamen Médico Legal de Secuelas.

The orbital blow out fracture is one of the most common fractures at facial level, so its importance lies in knowing how to identify them due to the clinical masking that may or may not be present. It is of vital importance to complement the clinical evaluation with imaging studies to confirm the clinical suspicions. Otherwise, if the patient does not consult a surgical medical service, the loss of functional capacity or the persistent debilitation in health caused by the fracture cannot be validated in a Forensic Medical Report of Sequelae.

Valor añadido de las interconsultas con otras especialidades médicas en el peritaje médico legal / The added value of interconsultations with other medical specialties in forensic expertise

Resumen La pericia médico legal es compleja y su resultado debe estar fundamentado considerando el análisis de varios elementos de juicio, como: la historia médico legal, el examen físico, el análisis de los expedientes médicos, estudios de laboratorio e imágenes radiológicas y en algunos casos, inclusive una interconsulta realizada a otros especialistas. El perito médico forense utiliza la interconsulta a especialistas para solventar la brecha que existe entre el conocimiento profesional y específico que posee una especialidad y una interrogante médico legal, por lo que difiere en gran manera en el objetivo, formulación y resultado de una interconsulta médica hospitalaria. Por esta razón, esta reflexión pretende contextualizar la importancia del recurso de interconsulta médica dentro del análisis pericial forense, que es un tema poco conocido en la medicina asistencial, y justificar la relevancia de la educación médica continua para los médicos especialistas que realizan las interconsultas y para quienes las solicitan.

Abstract The medical-legal report is complex and its result must be based on the análisis of various elements of judgment, such as: the legal medical history, the physical examination, the analysis of the medical records, laboratory and radiological images and in some cases, even an interconsultation with other specialists. The forensic medical expert uses the interconsultation with specialists to solve the gap that exists between the professional and specific knowledge that a specialty has and a legal medical question, for which it differs greatly in the objective, formulation and result of a hospital medical interconsultation. For this reason, this reflection aims to contextualize the importance of the resource of medical interconsultation within the forensic expert analysis, which is a little-known topic in healthcare medicine, and to justify the relevance of continuing medical education for medical specialists who perform interconsultations and for those who request them.

Exploration and Practice of the "One Combination, Two Highlights, Three Combinations, Four in One" Innovative Talents Training Mode in Forensic Medicine / 法医学杂志

Talent is one of the basic and strategic supports for building a modern socialist country in all aspects. Since the 1980s, the establishment of forensic medicine major and the cultivation of innovative talents in forensic medicine have become hot topics in higher education in forensic medicine. Over the past 43 years, the forensic medicine team of Shanxi Medical University has adhered to the joint education of public security and colleges, and made collaborative innovation, forming a training mode of "One Combination, Two Highlights, Three Combinations, Four in One" for innovative talents in forensic medicine. It has carried out "5+3/X" integrated reform, and formed a relatively complete talent training innovation mode and management system in teaching, scientific research, identification, major, discipline, team, platform and cultural construction. It has made a historic contribution to China's higher forensic education, accumulated valuable experience for the construction of first-class major and first-class discipline of forensic medicine, and provided strong support for the construction of the national new forensic talent training system. The popularization of this training mode is conducive to the rapid and sustainable development of forensic science, and provides more excellent forensic talents for national building, regional social development and the discipline construction of forensic science.

Research Progress on Biological Matrix Reference Materials in Forensic Toxicology / 法医学杂志

Biological matrix reference material is a reference material that combines the target material with the biological matrix. The biological matrix reference material has higher consistency with the authentic specimens in forensic toxicology, and its application has a positive effect on improving the accuracy of test results. This paper reviews the research on the matrix reference materials corresponding to three common biological test materials (blood, urine and hair). In order to provide reference for the development and application of biological matrix reference materials in forensic toxicology, this paper mainly introduces the research progress of preparation technology of biological matrix reference materials and some existing products and their parameters evaluation.

Progress in the Application of Magnetic Nanoparticles in Forensic Trace Analysis / 法医学杂志

Given the complexity of biological samples and the trace nature of target materials in forensic trace analysis, a simple and effective method is needed to obtain sufficient target materials from complex substrates. Magnetic nanoparticles (MNPs) have shown a wide range of application value in many research fields, such as biomedicine, drug delivery and separation, due to their unique superparamagnetic properties, stable physical and chemical properties, biocompatibility, small size, high specific surface area and other characteristics. To apply MNPs in the pretreatment of forensic materials, maximize the extraction rate of the target materials, and minimize interference factors to meet the requirements of trace analysis of the target materials, this paper reviews the application of MNPs in the fields of forensic toxicological analysis, environmental forensic science, trace evidence analysis and criminal investigation in recent years, and provides research ideas for the application of MNPs in forensic trace analysis.

Analysis of Forty-Two Psychoactive Substances in a Single Hair by Micro-Segmental Technique / 法医学杂志

OBJECTIVES@#To establish an LC-MS/MS method based on single hair micro-segmental technique, and verify the detection of 42 psychoactive substances in 0.4 mm hair segments.@*METHODS@#Each piece of single hair was cut into 0.4 mm segments and extracted by sonication and the segments were immersed in dithiothreitol-containing extraction medium. Mobile phase A was the aqueous solution containing 20 mmol/L ammonium acetate, 0.1% formic acid, and 5% acetonitrile. Mobile phase B was acetonitrile. An electrospray ionization source in positive ion mode was used for data acquisition in multiple reaction monitoring (MRM) mode.@*RESULTS@#The 42 psychoactive substances in hair had a good linear relationship within their respective linear ranges (r>0.99), the limits of detection were 0.2-10 pg/mm, the limits of quantification were 0.5-20 pg/mm, the intra-day and inter-day precisions were 1.5%-12.7%, the intra-day and inter-day accuracies were 86.5%-109.2%, the recovery rates were 68.1%-98.2%, and the matrix effects were 71.3%-111.7%. The method was applied to hair samples collected from one volunteer at 28 d after a single dose of zolpidem, with zolpidem detected in 5 hairs was 1.08-1.60 cm near the root tip, and the concentration range was 0.62-20.5 pg/mm.@*CONCLUSIONS@#The micro-segmental technique of single hair analysis can be applied to the investigation of drug-facilitated sexual assault cases.

Structural Analysis and Characterization of 4-F-α-PVP Analog 4-F-3-Methyl-α- PVP Hydrochloride / 法医学杂志

OBJECTIVES@#To identify 1-(4-fluorophenyl)-2-(1-pyrrolidinyl) pentan-1-one (4-F-α-PVP) analog 1-(4-fluoro-3-methyl phenyl)-2-(1-pyrrolidinyl) pentan-1-one (4-F-3-Methyl-α-PVP) hydrochloride without reference substance.@*METHODS@#The direct-injection electron ionization-mass spectrometry (EI-MS), GC-MS, electrospray ionization-high resolution mass spectrometry (ESI-HRMS), ultra-high performance liquid chromatography-high resolution tandem mass spectrometry (UPLC-HRMS/MS), nuclear magnetic resonance (NMR), ion chromatography and Fourier transform infrared spectroscopy (FTIR) were integrated utilized to achieve the structural analysis and characterization of the unknown compound in the sample, and the cleavage mechanism of the fragment ions was deduced by EI-MS and UPLC-HRMS/MS.@*RESULTS@#By analyzing the direct-injection EI-MS, GC-MS, ESI-HRMS and UPLC-HRMS/MS of the compound in the samples, it was concluded that the unknown compound was a structural analog of 4-F-α-PVP, possibly with one more methyl group in the benzene ring. According to the analysis results of 1H-NMR and 13C-NMR, it was further proved that the methyl group is located at the 3-position of the benzene ring. Since the actual number of hydrogen in 1H-NMR analysis was one more than 4-F-3-Methyl-α-PVP neutral molecule, it was inferred that the compound existed in the form of salt. Ion chromatography analysis results showed that the compound contained chlorine anion (content 11.14%-11.16%), with the structural analysis of main functional group information by FTIR, the unknown compound was finally determined to be 4-F-3-Methyl-α-PVP hydrochloride.@*CONCLUSIONS@#A comprehensive method using EI-MS, GC-MS, ESI-HRMS, UPLC-HRMS/MS, NMR, ion chromatography and FTIR to identify 4-F-3-Methyl-α-PVP hydrochloride in samples is established, which will be helpful for the forensic science laboratory to identify this compound or other analog compounds.

Correlation between Elbow Flexor Muscle Strength and Needle Electromyography Parameters after Musculocutaneous Nerve Injury / 法医学杂志

OBJECTIVES@#To explore the changes of elbow flexor muscle strength after musculocutaneous nerve injury and its correlation with needle electromyography (nEMG) parameters.@*METHODS@#Thirty cases of elbow flexor weakness caused by unilateral brachial plexus injury (involving musculocutaneous nerve) were collected. The elbow flexor muscle strength was evaluated by manual muscle test (MMT) based on Lovett Scale. All subjects were divided into Group A (grade 1 and grade 2, 16 cases) and Group B (grade 3 and grade 4, 14 cases) according to their elbow flexor muscle strength of injured side. The biceps brachii of the injured side and the healthy side were examined by nEMG. The latency and amplitude of the compound muscle action potential (CMAP) were recorded. The type of recruitment response, the mean number of turns and the mean amplitude of recruitment potential were recorded when the subjects performed maximal voluntary contraction. The quantitative elbow flexor muscle strength was measured by portable microFET 2 Manual Muscle Tester. The percentage of residual elbow flexor muscle strength (the ratio of quantitative muscle strength of the injured side to the healthy side) was calculated. The differences of nEMG parameters, quantitative muscle strength and residual elbow flexor muscle strength between the two groups and between the injured side and the healthy side were compared. The correlation between elbow flexor manual muscle strength classification, quantitative muscle strength and nEMG parameters was analyzed.@*RESULTS@#After musculocutaneous nerve injury, the percentage of residual elbow flexor muscle strength in Group B was 23.43% and that in Group A was 4.13%. Elbow flexor manual muscle strength classification was significantly correlated with the type of recruitment response, and the correlation coefficient was 0.886 (P<0.05). The quantitative elbow flexor muscle strength was correlated with the latency and amplitude of CMAP, the mean number of turns and the mean amplitude of recruitment potential, and the correlation coefficients were -0.528, 0.588, 0.465 and 0.426 (P<0.05), respectively.@*CONCLUSIONS@#The percentage of residual elbow flexor muscle strength can be used as the basis of muscle strength classification, and the comprehensive application of nEMG parameters can be used to infer quantitative elbow flexor muscle strength.

Identification of Human Body Fluid Stains and Non-Biological Stains by Three-Dimensional Fluorescence Spectroscopy / 法医学杂志

OBJECTIVES@#To establish a rapid and nondestructive identification method for human body fluid stains and non-biological stains using three-dimensional fluorescence spectroscopy.@*METHODS@#The collected three-dimensional fluorescence spectrum data of human saliva, 3% blood, coffee and Fanta® stains were processed with dimensionality reduction. After wavelet transform, spectral denoising and feature extraction, the classification formula was established. The Fisher discriminant was used for spectrum matching and recognition to establish the analysis method to distinguish stain types.@*RESULTS@#According to the results of data training and comparison, all the recognition accuracies of Fanta®, coffee, saliva and blood were more than 91.39%. Among them, saliva reached 100% recognition accuracy.@*CONCLUSIONS@#Three-dimensional fluorescence spectroscopy is a potential method for rapid and nondestructive identification of biological and non-biological stains.

Analysis of the Development Trend in Forensic Odontology Based on CiteSpace / 法医学杂志

OBJECTIVES@#To realize the dynamic visualization of forensic odontology based on the bibliometrics methods, and capture the research hotspots and identify the future development trend.@*METHODS@#Literature articles published from January 1995 to December 2020 were searched according to specific subject words in the core data set of Web of Science. The visualization analysis of publishing country, institution, discipline, author, co-cited journal and keywords was performed by CiteSpace 5.7.R5W software.@*RESULTS@#The annual analysis of publications showed an upward trend of forensic odontology research literature year by year, with the number of annual publications more than 110 in the last five years. Developed countries were the main source of contributions and the average centrality was greater than 0.2. The research of forensic odontology involved multiple disciplines, including stomatology, biology, computer science and medical imaging, with a distinct interdisciplinary feature. A total of 115 nodes were obtained by keyword cluster analysis. The principal line of forensic odontology mainly included individual identification and age estimation and the emergence of hotspots was closely related to new technologies. Population-based odontology investigation, improvement of traditional dental age estimation method and dental age estimation based on new technology were popular research in forensic odontology.@*CONCLUSIONS@#Developing countries urgently need to increase the focus on related research. It may be an important direction for the development of forensic odontology to establish and enrich the regional dental database, develop new odontology identification technology combined with frontier and high-end technology, and develop the identification program based on advanced information technology.

Causes of death in patients with autoimmune and rheumatic diseases—a 16-year autopsy-based study

ABSTRACT Introduction the autopsy is an essential medical procedure; however, its use has declined over the decades. In autoimmune and rheumatological diseases, anatomical and microscopic diagnosis is critical to diagnose of the cause of death. For this reason, our objective is to describe the cause of death in patients diagnosed with autoimmune and rheumatic diseases who underwent an autopsy in a Pathology reference center in Colombia. Materials and methods a retrospective and descriptive study of autopsy reports. Results between January 2004 and December 2019, 47 autopsies of patients with autoimmune and rheumatological diseases were performed. Systemic lupus erythematosus and rheumatoid arthritis were the most common diseases. The leading cause of death was related to infections, being opportunistic infections in the majority of the cases. Conclusions our autopsy-based study was focused on patients with autoimmune and rheumatological conditions. Infections are the leading cause of death, particularly opportunistic infections, diagnosed mainly by microscopy. Thus, the autopsy should continue to be considered the "gold standard" to determine the cause of death in this population.

Implementation of Competency-based Medical Education in Forensic Medicine and Toxicology in Indian Medical Education — A Viewpoint on Challenges and Way Forward

The changing disease burden, living conditions and anticipations of end-users in health care have resulted in the decision of regulatory bodies in the Indian medical education system to shift the MBBS curriculum from Traditional to Competency-Based Medical Education (CBME).The efforts taken by the National Medical Commission (NMC) erstwhile Medical Council of India (MCI) to successful implementation of the herculean task of shifting curriculum are praiseworthy. MCI initiated a National Faculty Development Programme (FDP) in 2009 in all medical colleges under its ambit.MCI started with five regional centres, which now expanded to 22 centres, out of which 12 are regional centres, and 10 are advanced nodal centres. Nearly 44932 faculties were trained till December 2018. Despite all the advantages of CBME & the efforts taken up by governing bodies, there are many challenges. Some are common for all subjects, but few are unique or specific to a subject. This article views the possible challenges and the way forward for the successful implementation of CBME in Forensic Medicine and Toxicology.

Perspectivas éticas e legais em perícias de psiquiatria forense / Ethical and legal perspectives of forensic psychiatry in expert testimony / Perspectivas éticas y legales en pericias de psiquiatría forense

Resumo Conhecer o paradigma ético que fundamenta o código moral da medicina é fundamental para atuar não só na assistência, mas também em processo pericial. A partir de revisão da literatura, propõe-se avaliar a maneira como os quatro princípios éticos fundamentais (beneficência, não maleficência, autonomia e justiça) se aplicam antes, durante e após a perícia psiquiátrica, como perito ou como assistente técnico. Novos desafios éticos vêm surgindo na psiquiatria forense. Com a pandemia de covid-19, a tecnologia foi adotada para permitir a prática da telemedicina, mas ainda se debate se seria suficiente para promover avaliação pericial psiquiátrica adequada. Considerando a complexidade da área, cada situação deve ser analisada de forma individual e abrangente, sendo recomendável buscar auxílio para debater as perspectivas éticas e legais das perícias psiquiátricas quando necessário.

Abstract Knowing the ethical paradigm that bases the medicine moral code is fundamental to act not only in care but also in the expert testimony process. From a revision of the literature, we propose to evaluate the way the four fundamental ethical principles (beneficence, nonmaleficence, autonomy, and justice) apply before, during, and after the psychiatric expert testimony, be it as expert or as technical assistant. New ethical challenges have been appearing in forensic psychiatry. With the COVID-19 pandemic, technology was adopted to allow the practice of telemedicine, but debates still occur if that would suffice for an adequate psychiatric expert testimony evaluation. Considering the complexity of the area, each situation must be analyzed in an individualized and all-encompassing way and seeking help to debate the ethical and legal perspectives of psychiatric expert testimonies is recommended when necessary.

Resumen Conocer el paradigma ético que subyace en el código moral de la medicina es fundamental para actuar no solo en la asistencia, sino también en el proceso pericial. A partir de una revisión bibliográfica, se propone evaluar cómo se aplican los cuatro principios éticos fundamentales (beneficencia, no maleficencia, autonomía y justicia) antes, durante y después de la pericia psiquiátrica, ya sea como perito o como asistente técnico. Están surgiendo nuevos desafíos éticos en la psiquiatría forense. Con la pandemia del Covid-19, se utilizó la tecnología para permitir la práctica de la telemedicina, pero aún está en debate si esto es suficiente para promover una adecuada evaluación psiquiátrica forense. Considerando la complejidad del área, se debe analizar cada situación de manera individual e integral y, cuando sea necesario, buscar ayuda para debatir las perspectivas éticas y legales de la pericia psiquiátrica.

Mortality surveillance in Brazil: factors associated with certification of unspecified external cause of death / Vigilância da mortalidade no Brasil: fatores associados à certificação de causa externa inespecifica de morte

Abstract This article aims to analyze the association between characteristics of death - type of certifier and place of death - and the odds of an external cause death being certified as unspecified in Brazil. Cross-sectional study of deaths due to external causes from the Mortality Information System, 2017. Unspecified external cause (UEC) is the outcome variable in the models. Type of certifier physician, place of death and the interaction of these variables were the explanatory variables. Confounders were controlled by multiple logistic regression. UEC were the initial underlying cause for 22% of the 159,720 deaths from external causes in Brazil and 31% of hospital deaths issued by coroners. After adjustment for confounders, the odds of UEC in a hospital death certified by a coroner was 98% greater (OR=1.98; 95%CI: 1.53; 2.56) than in a home/street death issued by another certifier. This was greater than the odds for certifications by coroners (OR=1.23; 95%CI: 1.14; 1.33) and hospital deaths (OR=1.44; 95%CI: 1.32; 1.58). External causes certified by coroners and/or occurring in hospitals have a higher presence of UEC than other deaths; and indicate the need for coordinated initiatives by the health and public security sectors.

Resumo O objetivo deste artigo é analisar a associação entre características do óbito - tipo de certificador e local do óbito - e a chance de um óbito por causa externa ser certificado como inespecífico no Brasil. Estudo transversal com dados do Sistema de Informações sobre Mortalidade de 2017. Causa externa inespecífica (CEI) é a variável desfecho nos modelos. As exposições de interesse foram tipo de médico certificador, local do óbito e a interação destas variáveis. Variáveis confundidoras foram controladas por regressão logística múltipla. As CEI foram a causa básica inicial de 22% dos 159,7 mil óbitos por causas externas no Brasil e 31% dos óbitos hospitalares emitidos por médicos-legistas. Após ajuste para confundidores, a chance de CEI em um óbito hospitalar certificado por legista foi 98% maior (OR=1,98; IC95%: 1,53; 2,56) do que em um óbito domiciliares/via pública emitido por outro certificador. Esta foi maior do que as chances para certificação por legista (OR=1,23; IC95%: 1,14; 1,33) e óbito hospitalar (OR=1,44; IC95%: 1,32; 1,58). As causas externas certificadas por médicos-legistas e/ou ocorridas em hospitais têm maior presença de CEI do que outras mortes; e indicam a necessidade de iniciativas coordenadas dos setores da saúde e segurança pública.

Análisis médico legal de la toxicomanía por MDMA: reporte de caso / Medical-legal relationship of MDMA drug addiction: case report

Resumen El análisis por toxicomanía representa un proceso común solicitado por la Autoridad Judicial para determinar si un usuario presenta hallazgos compatibles con el uso de una droga a nivel clínico, componentes histológicos, patológicos y toxicológicos que puedan generar su uso. Es necesario destacar las limitaciones del ambiente clínico donde se pueden generar múltiples hallazgos, y de la toxicología forense donde a pesar de la especificidad a la que se asocia; también se encuentra limitada por la capacidad de sus equipos tecnológicos. La resonancia magnética nuclear cuantitativa de hidrógeno representa grandes ventajas al demostrar la presencia de una droga ilegal, así como la posibilidad de disminuir costos y tiempo laboral. El uso del MDMA como tratamiento con una reciente aprobación para un estudio de fase III por la FDA, también requiere que se valore el motivo de su uso, por lo que para realizar un análisis médico legal se contemplaron diversos elementos de juicio a fin de satisfacer la evaluación sobre la toxicomanía por MDMA en un usuario que presentó un tejido granular blanco tipo polvo en la sección distal del tabique nasal y negó el consumo de metanfetaminas.

Abstract The analysis for drug addiction represents a common process requested by the Judicial Authority to determine if a user presents findings compatible with the use of a drug at a clinical level, histological, pathological and toxicological components that may generate its use. It is necessary to highlight the limitations of the clinical environment where multiple findings can be generated, and of forensic toxicology where despite the specificity to which it is associated; it is also limited by the capacity of its technological equipment. Quantitative hydrogen nuclear magnetic resonance represents great advantages when demonstrating the presence of an illegal drug, as well as the possibility of reducing costs and labor time. The use of MDMA as a treatment with a recent approval for a phase III study by the FDA, also requires that the reason for its use be assessed, therefore, in order to carry out a legal medical analysis, various elements of judgment were considered in order to satisfy evaluation of MDMA drug addiction in a user who presented with white powder-like granular tissue in the distal section of the nasal septum and denied the use of methamphetamine.

Application Value and Research Progress of Human Microbiome in Sexual Assault Cases / 法医学杂志

In recent years, sexual assault cases have been on the rise, seriously infringing the legitimate rights and interests of women and children, causing widespread concern in society. DNA evidence has become the key evidence to prove the facts in sexual assault cases, but lack of DNA evidence or only DNA evidence in some sexual assault cases leads to unclear facts and insufficient evidence. With the emergence of high-throughput sequencing technology and the development of bioinformatics and artificial intelligence, new progress has been made in the study of human microbiome. Researchers have begun to use human microbiome for difficult sexual assault cases indentification. This paper reviews the characteristics of human microbiome, and its application value in the inferences of the body fluid stain origin, the sexual assault method, the crime time, etc. In addition, the challenges faced by the application of the human microbiome in practical case handling, the solutions and future development potential are analyzed and prospected.

Research Progress of Exosomes and Their Forensic Significance / 法医学杂志

Exosomes are membranous tiny vesicles secreted by cells, which are widely found in the extracellular matrix and various body fluids and carry a variety of biologically functional molecules such as proteins, lipids, messenger RNA (mRNA) and microRNA (miRNA). Exosomes not only play important biological roles in the field of immunology and oncology, but also have potential application value in the field of forensic medicine. This article reviews the discovery, production and degeneration mechanism, biological functions, isolation and identification methods of exosomes, summarizes the research on exosomes and their significance in the field of forensic science, and discusses their applications in body fluid identification, individual identification, postmortem interval estimation to provide ideas for the application of exosomes in forensic work.

Structure Analysis of the Interfering Substance N-methyl-2-phenylpropan-1-amine of Methamphetamine in Wastewater / 法医学杂志

OBJECTIVES@#To analyze the chemical structure of the interfering substance that affects the result of methamphetamine analysis in wastewater.@*METHODS@#A combination of GC-MS and liquid chromatography-quadrupole time-of-flight mass spectrometry (LC-QTOF-MS) was used to analyze the mass spectrum characteristics of the interfering substance that affects the result of methamphetamine analysis and to infer its possible structure. Liquid chromatography-triple quadrupole-mass spectrometry (LC-TQ-MS) was used to confirm the control material.@*RESULTS@#Using LC-QTOF-MS in positive electrospray ionization (ESI+) mode, the mass-to-charge ratio (m/z) of quasi-molecular ion in the MS1 mass spectrometry of interfering substance was identical to that of methamphetamine, indicating that the interfering substance was probably an isomer of methamphetamine. The MS2 mass spectra obtained at three collision energies of 15 V, 30 V and 45 V were highly similar to methamphetamine, suggesting that the interfering substance contained methylamino and benzyl groups. Further analysis using GC-MS in electron impact (EI) ionization mode showed that the base peak in the mass spectrum of the interfering substance was at m/z 44. The interfering substance was confirmed to be N-methyl-2-phenylpropan-1-amine by compared with the standard reference.@*CONCLUSIONS@#The chemical structure of N-methyl-2-phenylpropan-1-amine is highly similar to methamphetamine, which is easy to cause interference for the detection of trace amounts of methamphetamine in wastewater using LC-TQ-MS. Therefore, in the actual analysis, the chromatographic retention time can be used to distinguish between N-methyl-2-phenylpropan-1-amine and methamphetamine.