Secuelas neurológicas tardías en la intoxicación por monóxido de carbono. Reporte de un caso pediátrico

Introducción: la intoxicación por monóxido de carbono (CO) es un problema grave de salud. La aparición de secuelas neurológicas tardías incluye trastornos cognitivos, mentales, síntomas piramidales o extrapiramidales. Caso clínico: paciente de 12 años, sexo femenino, luego de 15 días de una intoxicación aguda grave por CO, presenta movimientos coreoatetoideos de miembros superiores, distonías de cuello, discinesias de cara, bradipsiquia y dificultades en la memoria. Resonancia magnética: lesiones isquémicas en globo pálido bilateral, sustancia blanca de hipocampo y cerebelo. Discusión: es fundamental el seguimiento posterior al alta para reconocer las secuelas neurológicas tardías, incluyendo la realización de pruebas neuropsicológicas estandarizadas.

Introduction: Carbon monoxide poisoning is a severe health problem. The appearance of delayed neurological sequelae includes cognitive and mental disorders and pyramidal or extrapyramidal symptoms. Case presentation: A 12-year-old female patient, after 15 days of severe acute CO poisoning, presents choreoathetoid movements of the upper limbs, neck dystonias, face dyskinesias, bradypsychia, and memory difficulties. Magnetic resonance imaging: ischemic lesions in bilateral globus pallidus, the white matter of hippocampus and cerebellum. Discussion: A follow-up visit after discharge is essential to recognize delayed neurological sequelae, including performing standardized neuropsychological tests.

Causas de intoxicaciones por agroquímicos en agricultores familiares y propuestas para enfrentarlas / Causes of agrochemical poisoning in family farmers and proposals to address them / Causas das intoxicações por agrotóxicos em agricultores familiares e propostas para enfrentá-las

Resumen La utilización de agroquímicos en la agricultura y el aumento de intoxicaciones derivadas de su manejo han llevado a discusiones acerca de su peligrosidad para la salud humana y el ambiente. Objetivo: conocer las causas de intoxicaciones por el uso de agroquímicos y describir propuestas para enfrentar el problema desde la perspectiva de los agricultores rurales, agentes de salud y extensionistas rurales de Cerro Azul (Misiones, Argentina). Metodología: cualitativa de tipo exploratorio-descriptiva, se realizaron 14 entrevistas a los diferentes actores las cuales fueron transcriptas y analizadas con el apoyo del software Atlas ti. Resultados: se encontró que las causas de intoxicación identificadas por los actores fueron: no utilizar vestimenta protectora, no seguir medidas de bioseguridad apropiadas, no poseer los medios de protección, falta de conciencia de la peligrosidad de los agroquímicos, y falta del cumplimiento de la ley relativa al uso de agroquímicos tanto por parte de agricultores como de vendedores de insumos, como propuestas para enfrentar el problema se plantearon: tomar conciencia de la peligrosidad y usar correctamente los medios de protección, dar capacitaciones, hacer visitas a los predios productivos, hacer cumplir la ley y establecer controles de residuos sobre los productos agrícolas. Conclusiones: se identificó que el uso de agroquímicos tiene efectos en la salud humana y en el ambiente, esta afirmación debería ser suficiente para generar y promover cada vez más dispositivos, programas y modelos de producción que disminuyan o eliminen su utilización.

Abstract The use of agrochemicals in agriculture and the increase in poisoning resulting from their handling has led to discussions about their danger to human health and the environment. Objetive: the objective of this research was to know the causes of poisoning due to the use of agrochemicals and describe proposals to face the problem from the perspective of rural producers, health agents and rural extension workers of Cerro Azul (Misiones, Argentina). Methodology: the methodology used was qualitative, exploratory-descriptive, 14 interviews were carried out with the different actors, which were transcribed and analyzed with the support of the Atlas ti software. Results: as a result, it was found that the causes of poisoning identified by the actors were: not using protective clothing, not following appropriate biosafety measures, not having the means of protection, lack of awareness of the danger of agrochemicals, and lack of compliance with the law regarding the use of agrochemicals by both producers and input sellers. Proposals to address the problem were proposed: becoming aware of the danger and correctly using protective means, providing training, visiting productive properties, enforcing the law and establishing residue controls on agricultural products. Conclusion: As a discussion and conclusions, it was identified that the use of agrochemicals has effects on human health and the environment; this statement should be sufficient to generate and promote more and more devices, programs and production models that reduce or eliminate their use.

Resumo O uso de agroquímicos na agricultura e o aumento das intoxicações decorrentes do seu manuseio têm gerado discussões sobre seus perigos para a saúde humana e o meio ambiente. Objetivo: o objetivo desta pesquisa foi conhecer as causas das intoxicações pelo uso de agrotóxicos e descrever propostas para o enfrentamento do problema na perspectiva de produtores rurais, agentes de saúde e extensionistas rurais de Cerro Azul (Misiones, Argentina). Metodologia: a metodologia utilizada foi qualitativa, exploratório-descritiva, foram realizadas 14 entrevistas com os diferentes atores, as quais foram transcritas e analisadas com o apoio do software Atlas ti. Resultados: como resultado, constatou-se que as causas de intoxicação identificadas pelos atores foram: não utilizar roupas de proteção, não seguir medidas adequadas de biossegurança, não possuir meios de proteção, falta de conscientização sobre o perigo dos agroquímicos e falta de cumprimento das normas. a lei relativa ao uso de agroquímicos tanto pelos produtores quanto pelos vendedores de insumos. Foram propostas propostas para enfrentar o problema: conscientizar-se do perigo e utilizar corretamente os meios de proteção, ministrar treinamentos, visitar propriedades produtivas, fazer cumprir a lei e estabelecer controles de resíduos nos produtos agrícolas. Conclusões: como discussão e conclusões, identificou-se que o uso de agrotóxicos traz efeitos à saúde humana e ao meio ambiente; esta afirmação deveria ser suficiente para gerar e promover cada vez mais dispositivos, programas e modelos de produção que reduzam ou eliminem seu uso.

Lesión por medusa: una entidad poco conocida en país mediterráneo. Reporte de caso

Las diferentes especies de medusas, marinas o de agua dulce, pueden inyectar toxinas a los humanos si estos entran en contacto con ellas, ocasionando eritema, prurito, dolor neurogénico agudo y enrojecimiento localizado, derivados de la acción de las toxinas en el sistema nervioso periférico. En casos más severos, pueden manifestarse reacciones alérgicas sistémicas como anafilaxia, dificultades respiratorias y taquicardia, e incluso la muerte. El tratamiento involucra la inmediata remoción de los tentáculos adheridos, preferiblemente con agua salada, seguida de la aplicación local de frio moderado para inactivar las toxinas. El uso de analgésicos, antihistamínicos y, en casos graves, la administración de epinefrina, son medidas terapéuticas comunes. Es necesario y urgente derivar casos complicados o de reacciones alérgicas graves a unidades de atención médica para evaluación y manejo adecuado. Presentamos el caso de un adulto que sufrió envenenamiento por medusa de zona marítima.

Different species of jellyfish, marine or freshwater, can inject toxins into humans if they come into contact with them, causing erythema, pruritus, acute neurogenic pain and localized redness, derived from the action of the toxins in the peripheral nervous system. In more severe cases, systemic allergic reactions such as anaphylaxis, breathing difficulties and tachycardia, and even death may occur. Treatment involves immediate removal of attached tentacles, preferably with salt water, followed by local application of moderate cold to inactivate toxins. The use of analgesics, antihistamines and, in severe cases, the administration of epinephrine, are common therapeutic measures. It is necessary and urgent to refer complicated cases or severe allergic reactions to medical care units for evaluation and appropriate management. We present the case of an adult who suffered poisoning by jellyfish from the maritime area.

Plomo y mercurio en personas víctimas del conflicto armado en Bojayá, Chocó: estudio descriptivo / Lead and mercury in victims of the armed conflict in Bojayá, Chocó: a descriptive study / Chumbo e mercúrio em vítimas do conflito armado em Bojayá, Chocó: um estudo descritivo

Introducción: En los contextos del conflicto armado convergen actividades que potencialmente pueden producir toxicidad por metales pesados; inclusive, muchas víctimas de artefactos explosivos improvisados portan esquirlas residuales interiorizadas, de composición y potencial toxicidad desconocidas. Ello ha sido poco estudiado. Objetivo: Describir los niveles biológicos de plomo y mercurio en civiles supervivientes de la masacre de Bojayá, su eventual exposición actual, así como signos y síntomas compatibles con toxicidad crónica. Metodología: Estudio observacional descriptivo, tipo serie con 13 casos. Resultados: El 38.46 % de los casos tuvo niveles de plomo en sangre superiores o cercanos al valor límite superior, sin fuentes específicas identificadas. Un 46.15 % tuvo niveles mercuriales superiores o cercanos al límite de referencia, y se los considera exposición ambiental por minería aurífera regional. La valoración clínica toxicológica mostró síntomas y signos clínicos potencialmente asociados con toxicidad crónica por metales. Conclusión: Hubo presencia de residuos de artefactos explosivos en personas con hallazgos sugestivos de toxicidad por plomo o mercurio, sin que pueda afirmarse una relación directa y específica entre los dos aspectos; algunos casos sugieren exposición ambiental para mercurio, y exposición a proyectiles para el plomo, relacionadas con dinámicas del conflicto armado. Son necesarios estudios adicionales para afirmar la existencia de asociaciones causales.

Introduction: In the contexts of armed conflict, activities converge that can potentially produce heavy metal toxicity; including many victims of improvised explosive devices carry internalised residual shrapnel, of unknown composition and potential toxicity. This has been little studied. Objective: To describe the biological levels of lead and mercury in civilian survivors of the Bojayá massacre, their possible current exposure, as well as signs and symptoms compatible with chronic toxicity. Methodology: Descriptive observational study, serial type with 13 cases. Results: 38.46 % of the cases had blood lead levels above or close to the upper limit value, with no specific sources identified. 46.15 % had mercury levels above or close to the reference limit, and were considered environmental exposure from regional gold mining. Clinical toxicological assessment showed clinical signs and symptoms potentially associated with chronic metal toxicity. Conclusion: There was a presence of explosive ordnance residues in individuals with findings suggestive of lead or mercury toxicity, without a direct and specific relationship between the two; some cases suggest environmental exposure for mercury, and projectile exposure for lead, related to the dynamics of the armed conflict. Further studies are needed to affirm the existence of causal associations.

Introdução: Nos contextos de conflito armado, convergem atividades que podem potencialmente produzir toxicidade por metais pesados; Na verdade, muitas vítimas de dispositivos explosivos improvisados carregam lascas residuais internalizadas de composição desconhecida e potencial toxicidade. Isto tem sido pouco estudado. Objetivo: Descrever os níveis biológicos de chumbo e mercúrio em civis sobreviventes do massacre de Bojayá, sua eventual exposição atual, bem como sinais e sintomas compatíveis com toxicidade crônica. Metodologia: Estudo observacional descritivo, tipo série com 13 casos. Resultados: 38.46 % dos casos apresentaram níveis de chumbo no sangue superiores ou próximos ao valor limite superior, sem fontes específicas identificadas. 46.15 % apresentaram níveis de mercúrio superiores ou próximos ao limite de referência e são considerados exposição ambiental devido à mineração regional de ouro. A avaliação clínica toxicológica mostrou sintomas e sinais clínicos potencialmente associados à toxicidade crônica por metais. Conclusão: Houve presença de resíduos de artefatos explosivos em pessoas com achados sugestivos de toxicidade por chumbo ou mercúrio, sem que se pudesse afirmar uma relação direta e específica entre os dois aspectos; Alguns casos sugerem exposição ambiental ao mercúrio e exposição a projéteis de chumbo, relacionadas com a dinâmica do conflito armado. Estudos adicionais são necessários para confirmar a existência de associações causais.

Metahemoglobinemia y hemólisis intravascular aguda después de una intoxicación por naftaleno en un paciente pediátrico / Methemoglobinemia and acute intravascular hemolysis after naphthalene poisoning in a pediatric patient

La intoxicación por naftaleno es poco frecuente en los niños. Es causada por la ingesta, la inhalación o el contacto con la piel de sustancias que contienen naftaleno. Los pacientes suelen tener orina de color marrón oscuro, diarrea acuosa y vómito bilioso. Los signos incluyen fiebre, taquicardia, hipotensión y valores bajos en la oximetría de pulso, incluso con oxigenoterapia. Los análisis de sangre detectan anemia hemolítica, metahemoglobinemia, insuficiencia renal e hiperbilirrubinemia. Además del tratamiento sintomático, se hacen transfusiones de eritrocitos y se les administran ácido ascórbico, azul de metileno y N-acetilcisteína. En este artículo, presentamos el caso de un paciente masculino de 23 meses de edad con metahemoglobinemia y hemólisis intravascular aguda que recibió atención en la unidad de cuidados intensivos durante cinco días por intoxicación por naftaleno. Si bien la intoxicación por naftaleno es muy poco frecuente, tiene consecuencias mortales y se debe ejercer precaución con su uso y venta.

Poisoning by naphthalene is uncommon in children. It is a type of poisoning brought on by ingesting, inhaling, or coming into touch with naphthalene-containing substances on the skin. Patients typically present with an initial onset of dark brown urine, watery diarrhea, and bile vomit. The signs include fever, tachycardia, hypotension, and low pulse oximetry readings even with oxygen support. Hemolytic anemia, methemoglobinemia, renal failure, and hyperbilirubinemia are all detected in blood tests. Erythrocyte transfusion, ascorbic acid, methylene blue, and N-acetylcysteine (NAC) therapies are provided to inpatients in addition to symptomatic treatment. We present a 23-month-old male patient who developed methemoglobinemia and acute intravascular hemolysis, who was followed up in the intensive care unit for five days due to naphthalene intoxication. Although naphthalene poisoning is very rare, it should be known that it has fatal consequences, and more care should be taken in its use and sale.

Intoxicações exógenas por raticidas notificadas no Brasil entre 2008 e 2022 / Exogenous poisoning by rodenticides reported in Brazil between 2008 and 2022

Objetivo: avaliar as notificações de intoxicação exógena por raticida no Brasil entre 2008 e 2022. Métodos: foi realizado um estudo ecológico, do tipo série temporal, avaliando a quantidade anual de notificações nos últimos 15 anos, considerando os casos confirmados pelo Sistema de Informação de Agravos de Notificação (SINAN). A tendência temporal e as razões de incidência antes e durante a pandemia de COVID-19 foram examinadas com nível de significância de 5%. Resultados: entre 2008 e 2022, 48.448 notificações de intoxicação exógena por raticidas foram registradas. A tendência temporal foi estabelecida como estacionária nos últimos 15 anos (p = 0,285), mas tornou-se, significativamente, crescente ao remover os anos relacionados à pandemia de COVID-19 (p = 0,001; VPA = 5,4% [IC95% = 2,1, 8,6). Além disso, ao comparar com período pré-pandemia, a incidência de notificações foi 34% menor (RI = 0,66 [IC95% = 0,59, 0,73]) no primeiro e 28% menor (RI = 0,72 [IC95% = 0,65, 0,79]) no segundo ano da pandemia de COVID-19. Por fim, observou-se que 82,2% das circunstâncias foram tentativas de suicídio, 89,4% foram exposições do tipo aguda-única e a maioria (91,1%) evoluíram para cura sem sequelas. Conclusão: foi possível concluir que as intoxicações exógenas por raticidas persistem como um problema de Saúde Pública no Brasil.

Objectives: to evaluate notifications of exogenous poisoning by rodenticides in Brazil between 2008 and 2022. Methods: an ecological time-series study was carried out, evaluating the annual number of notifications in the last 15 years, considering the cases confirmed by the Notifiable Diseases Information System (SINAN). Temporal tendency and incidence ratios before and during the COVID-19 pandemic were examined at a 5% significance level. Results: between 2008 and 2022, 48,448 notifications of exogenous poisoning by rodenticides were reported. The temporal tendency was established as stationary over the last 15 years (p = 0.285) but became significantly increasing when removing the COVID-19 pandemic years (p = 0.001; VPA = 5.4% [95%CI = 2 .1, 8.6). In addition, when compared to the pre-pandemic period, the incidence of notifications was 34% lower (IRR = 0.66 [CI95% = 0.59, 0.73]) in the first and 28% lower (IRR = 0,72 [CI95% = 0.65, 0.79]) in the second year of the COVID-19 pandemic. At last, it was observed that 82.2% of the circumstances were suicide attempts, 89.4% were acute-single exposures, and most (91.1%) evolved to cure without sequelae. Conclusion: it was possible to conclude that exogenous poisoning by rodenticides persists as a Public Health problem in Brazil.

Intoxicación severa por 3,4-metilendioximetanfetamina (MDMA). Reporte de caso

La intoxicación por 3,4-metilendioximetanfetamina (MDMA), ha tenido un dramático resurgimiento desde 1980, se ha extendido por gran parte de los Estados Unidos, Europa y América, ha sido ampliamente utilizada como drogas con fines recreativos, actualmente Las catinonas sintéticas se venden como "euforizantes legales" para eludir las leyes existentes, lo que resulta en toxicidad grave y muertes. Presentamos un caso clínico de un adulto joven, quien debuto con intoxicación aguda severa MDMA, con falla multiorgánica, el cual se realizó atención y manejo agudo de la intoxicación en el servicio de urgencias, con posterior manejo de complicaciones en la unidad de cuidados intensivo y finalmente con sobrevida a pesar del mal pronóstico.

3,4-methylenedioxymethamphetamine (MDMA) intoxication, has had a dramatic resurgence since 1980, has spread throughout much of the United States, Europe and America, has been widely used as a recreational drug, currently Synthetic cathinones are they sell as "legal highs" to circumvent existing laws, resulting in severe toxicity and deaths. We present a clinical case of a young adult, who debuted with severe acute MDMA poisoning, with multiple organ failure, who underwent care and acute management of the poisoning in the emergency department, with subsequent management of complications in the intensive care unit and finally with survival despite the poor prognosis.

Intoxicación por metanol: análisis de una serie de casos en dos hospitales públicos / Methanol poisoning: Analysis of a case series in two public hospitals

RESUMEN Objetivo: describir las características clínicas y epidemiológicas de pacientes con intoxicación por metanol en dos hospitales públicos. Materiales y métodos: serie de casos retrospectiva, se evaluó 41 historias clínicas de pacientes que ingresaron a emergencia con diagnóstico de intoxicación por metanol, en el periodo 2018-2022, en dos hospitales públicos de Lima-Perú: Hospital Nacional Arzobispo Loayza y Hospital Hipólito Unanue. Resultados : de los 41 pacientes, 35 eran varones, con una media de edad de 44,4 años. Cerca del 50% ingresó a la Unidad de Cuidados Intensivos (UCI) y el 56,1% (23/41) requirió hemodiálisis. Todos los pacientes presentaron acidosis metabólica severa anión gap elevado. A las 48 h de ingreso 9/41(21,9%) pacientes fallecieron. De los sobrevivientes, 23/41(56,1%) presentaron secuelas: 21 con neuropatía óptica tóxica y 2 con secuela motora por accidente cerebrovascular hemorrágico. Se evidenció menor valor del nivel de pH (6,7 vs. 7,1, p < 0,001) y bicarbonato (3 mmol/L vs. 4,9 mmol/L, p= 0,004), así como mayor nivel de lactato (9,6 mmol/L vs 2,3 mmol/L, p<0,001) y sodio (142,5 mmol/L vs. 138 mmol/L, p < 0,036) en el grupo de fallecidos comparado con los vivos. Conclusión: La intoxicación por metanol continúa siendo una condición que deja secuelas y puede llevar a fallecimiento, su principal manifestación es la acidosis metabólica severa anión gap alto, asociada a síntomas respiratorios y neurológicos; el tratamiento se basa en la administración de etanol, bicarbonato y hemodiálisis.

ABSTRACT Objective: To describe the clinical and epidemiological characteristics of patients with methanol poisoning in two public hospitals. Materials and methods: Retrospective case series, 41 medical records of patients admitted to emergency with a diagnosis of methanol intoxication in the period 2018-2022 in two public hospitals in Lima-Peru were reviewed. Patients were from Arzobispo Loayza National Hospital and Hipolito Unanue Hospital. Results: Of the 41 patients, 35 were male, with a mean age of 44.4 years. Nearly 50% were admitted to the intensive care unit (ICU), and 23/41 (56,1%) required hemodialysis. All patients presented severe metabolic acidosis with elevated anion gap. Forty-eight hours after admission, 9/41 (21,9%) patients died. Of those who survived, 23/41 (56,1%) had sequelae: 21 patients developed toxic optic neuropathy and two patients had motor sequelae due to hemorrhagic stroke. Lower pH (6,7 vs. 7,1, p<0,001) and bicarbonate (3 mmol/L vs. 4,9 mmol/L, p= 0,004) levels, as well as higher lactate (9,6 mmol/L vs 2,3 mmol/L, p<0,001) and sodium (142,5 mmol/L vs. 138 mmol/L, p<0,036) values were evidenced in the deceased patients compared to those who survived. Conclusion: Methanol poisoning continues to be a condition that leaves sequelae and it may lead to death. Severe metabolic acidosis with an elevated anion gap, associated with respiratory and neurological symptoms are its main manifestations; therapy is based on the administration of ethanol, bicarbonate, and hemodialysis support.

Lung transplantation after paraquat poisoning in an adolescent: one case report and literature review / 器官移植

Objective To summarize the effect of the timing of lung transplantation and related treatment measures on clinical prognosis of patients with paraquat poisoning. Methods Clinical data of a patient with paraquat poisoning undergoing bilateral lung transplantation were retrospectively analyzed. Clinical manifestations, auxiliary examination, diagnosis and treatment of this patient were summarized and analyzed. Results A 17-year-old adolescent was admitted to hospital due to nausea, vomiting, cough and systemic fatigue after oral intake of 20-30 mL of 25% paraquat. After symptomatic support treatment, the oxygen saturation was not improved, and pulmonary fibrosis continued to progress. Therefore, sequential bilateral lung transplantation was performed under extracorporeal membrane oxygenation (ECMO). After postoperative rehabilitation and active prevention and treatment for postoperative complications, the patient was discharged at postoperative 50 d. Conclusions The timing of lung transplantation after paraquat poisoning may be selected when the liver and kidney function start to recover. Active and targeted prevention of potential pathogen infection in perioperative period and early rehabilitation training contribute to improving clinical prognosis of lung transplant recipients.

Diagnostic and prognostic value of combined detection of serum Lp-PLA2,NSE and S-100β in patients with carbon monoxide poisoning complicated with acute cerebral infarction / 国际检验医学杂志

Objective To explore the value of combined detection of lipoprotein-associated phospholipase A2(Lp-PLA2),neuron specific enolase(NSE)and S-100 calcium binding protein β(S-100β)in the diagnosis and prognosis evaluation of acute cerebral infarction(ACI)in patients with carbon monoxide poisoning(CMP).Methods A total of 102 patients with CMP complicated with ACI admitted to the hospital from Jan-uary 2020 to November 2021 were selected as the study group,meanwhile,102 patients with simple CMP were enrolled as the control group.Patients in the study group were followed up for 6 months after discharge,ac-cording to the follow-up results,they were grouped into good prognosis group(60 cases)and poor prognosis group(42 cases).The serum levels of Lp-PLA2,NSE and S-100β were detected by enzyme-linked immunosor-bent assay(ELISA).The receiver operating characteristic(ROC)curve was applied to analyze the value of the combination of serum Lp-PLA2,NSE and S-100β in the early diagnosis and prognosis evaluation of patients with CMP and ACI.Results Compared with the control group,the levels of Lp-PLA2,NSE and S-100β in the study group were obviously higher(P<0.05).The ROC curve analysis results showed that the area under the curve(AUC)of the combined detection of serum Lp-PLA2、NSE、S-100β for the diagnosis of CMP complicat-ed with ACI was greater than the AUC of single detection of each indicator(P<0.001).Compared with the good prognosis group,the levels of Lp-PLA2,NSE and S-100β in the poor prognosis group were obviously higher(P<0.05).The results of ROC curve analysis showed that the AUC of the combined detection of ser-um Lp-PLA2、NSE、S-100β for the prognosis of patients with CMP complicated with ACI was greater than the AUC of single detection of each indicator(P<0.05).Conclusion The expression of Lp-PLA2,NSE and S-100β in serum of patients with CMP complicated with ACI is high,and the combined detection of the three has certain value in the diagnosis and prognosis evaluation for patients with CMP complicated with ACI.

Analysis of prognostic factors in patients with acute diquat poisoning / 中华急诊医学杂志

Objective:To investigate the factors influencing the short-term prognosis of patients with acute diquat poisoning (ADQP).Methods:Patients with ADQP admitted to the Affiliated Hospital of Xuzhou Medical University and Xuzhou Occupational Disease Prevention Hospital from August 2015 to July 2022 were retrospectively selected. Patients were divided into survival group and death group according to 30-day survival status after poisoning. The general data and the results of the first laboratory examination after admission were compared between the two groups. Logistic regression analysis was used to analyze the independent risk factors associated with prognosis. And the receiver operating characteristic (ROC) curve was drawn to evaluate the prognostic value of risk factors in patients with ADQP.Results:A total of 79 ADQP patients were included in this study, including 40 patients in the survival group and 39 patients in the death group. There were statistically significant differences in the age, poisoning dose, white blood cell, alanine aminotransferase, aspartate aminotransferase, serum creatinine, blood urea, neutrophil to lymphocyte ratio, monocyte to lymphocyte ratio, and systemic immune inflammation index (SII) between survival and death groups (all P<0.05). Multivariate logistic regression analysis showed that the poisoning dose ( OR=1.018, 95% CI: 1.001-1.035, P=0.033), serum creatinine ( OR=1.049, 95% CI: 1.005-1.095, P=0.028), and SII ( OR=1.001, 95% CI: 1.000-1.002, P=0.029) were independent risk factors for the prognosis of patients with diquat poisoning. The areas under the curves of the combined detection of poisoning dose, serum creatinine and SII was 0.968, the sensitivity was 0.949, and the specificity was 0.900, which were higher than those of the single index. Conclusions:The poisoning dose, serum creatinine and SII are independent prognostic predictors of patients with ADQP. The combination of three independent factors has higher sensitivity and specificity in evaluating the prognosis of ADQP, which could be used as a reliable indicator to predict the prognosis of patients with ADQP.

Screening of early risk factors and prediction of prognosis in patients with diquat poisoning / 中华急诊医学杂志

Objective:To analyze the change characteristics of creatinine level in the early stage of patients with diquat (DQ) poisoning, and to explore the early risk factors and the value of prognosis.Methods:A retrospective analysis was carried out on patients with DQ admitted to the the first affiliated hospital of Zhengzhou University from January 2020 to June 2022. The DQ patients were divided into death group and the survival group according to the 28 days survival status after posioning. The basic data and serum indexes and blood gas analysis of the patients on day 1 (D1), day 3 (D3) and day 5 (D5) were collected. The difference of clinical features between the two groups was analyzed, the variables were screened by multiple logistic regression analysis, and the predictive value of the variables was evaluated by drawing receiver operating characteristic curve (ROC curve).Results:A total of 88 patients were included, including 40 patients in the survival group and 48 patients in the death group. The toxic dose in death group was significantly higher than that in survival group [100(40.00, 120.00) mL vs. 50.00(20.00, 90.00) mL, P=0.003]. The higher the toxic dose, the higher the fatality rate. All 4 patients with oral doses greater than 200 mL died. Compared with the survival group, the levels of alanine aminotransferase (ALT) (D3, D5), creatinine (CR) (D3, D5), blood amylase (AMY) (D5) and oxygen partial pressure (PaO 2) (D5) in the death group were significantly higher than those in the survival group (all P<0.05). Multiple Logistic regression analysis showed that CR (D3) and AMY(D5) were independent risk factors for death after poisoning, and PaO 2(D5) was independent protective factor. ROC curve showed that the areas under ROC curve of CR (D3), AMY (D5) and PaO 2 (D5) were 0.814, 0.741 and 0.702, respectively. Conclusion:The higher the oral dose, the higher the death rate. After admission, CR(D3), AMY (D5) and PaO 2 (D5) were independent factors influencing the prognosis of DQ poisoning. In particular, CR (D3) is more effective in predicting death after poisoning.

Analysis of clinical characteristics and risk factors of shock in patients with acute dichlorvos poisoning / 中华急诊医学杂志

Objective:The aim of this study was to investigate the clinical characteristics and analyze the risk factors of patients with acute dichlorvos poisoning combined with shock.Methods:The clinical data of patients with acute dichlorvos poisoning admitted to the Peking University Third Hospital and the Fifth Medical Center of the PLA General Hospital between January 2019 and September 2020 were retrospectively analyzed, and demographic data, poisoning, clinical manifestations, laboratory tests, therapeutic measures and clinical outcomes were collected to establish a clinical database. The patients were divided into two groups: the shock group and the non-shock group, and the clinical data were compared between the two groups to analyze the clinical characteristics and prognosis of shock in acute dichlorvos poisoning, and the risk factors of shock in acute dichlorvos poisoning were analyzed by logistic regression.Results:A total of 134 patients who met the criteria for acute dichlorvos poisoning were included in this study; the incidence of shock within 24 hours of admission was 39.6% (53/134), and 11 patients (8.21%) died in hospital; the in-hospital morbidity and mortality rate of patients in the shock group was higher than that in the non-shock group (20.8% vs. 0.0%, P<0.001). Symptoms of sphincter relaxation, coma, hypothermia, and organ function damage were more common in the shock group than in the non-shock group; and shock patients had longer hospitalization, ICU stay, and invasive ventilator use. Binary logistic regression analysis showed that the presence of sphincter relaxation manifestations ( OR=10.888, 95% CI: 1.677-70.684, P=0.012) was an independent risk factor for comorbid shock in patients with acute dichlorvos poisoning, and the use of cholinesterase reanimators ( OR=0.246, 95% CI: 0.072-0.846, P=0.026) was a protective factor for combined shock in patients with acute dichlorvos poisoning. Conclusions:The incidence of shock in patients with acute dichlorvos poisoning is high and affects the clinical prognosis, and the presence of sphincter relaxation and the absence of cholinesterase reenergizers are independent risk factors for combined shock in patients with acute dichlorvos poisoning.

Myocardial contrast echocardiography combined with speckle tracking imaging for evaluating protective effect of 2-aminoethoxydiphenyl borate on heart of arsenic poisoned rats / 中国医学影像技术

Objective To observe the value of myocardial contrast echocardiography(MCE)combined with speckle tracking imaging(STI)for evaluating the protective effect of 2-aminoethoxydiphenyl borate(2-APB)on heart of arsenic poisoned rats.Methods Forty rats were randomly divided into low-and high-dose 2-APB intervention after arsenic trioxide(ATO)poisoned group(2-APBL group and 2-APBH group),simple ATO poisoned group(ATO group),simple 2-APB intervention group(2-APB group)and control group(each n=8).5 mg/kg ATO were intraperitoneally injected in 2-APBL group,2-APBH group and ATO group,while equal dose physiological saline were injected in 2-APB group and control group,respectively.Then 2,4 and 4 mg/kg 2-APB were intraperitoneally injected in 2-APBL group,2-APBH group and 2-APB group,while equal doses physiological saline were injected in ATO group and control group,respectively.MCE and STI were performed,serum myocardial injury markers were tested,sarcoplasmic reticulum Ca2+-ATPase(SERCA)was examinated,and finally myocardial pathological examination was performed.The above indexes were compared among groups and between each 2 groups,and correlation analysis was performed.Results Significant differences of left ventricular fractional shortening(LVFS),left ventricular ejection fraction(LVEF),wash in slope(WIS),peak intensity(PI),WIS×PI,area under the curve(AUC),global circumferential strain(GCS)in each layer of myocardium,as well as glutamic-oxaloacetic transaminase(GOT),creatine kinase(CK),lactate dehydrogenase(LDH)and SERCA were found among 5 groups(all P＜0.05).The above indexes substantially increased or decreased sequentially ATO group,2-APBL group,2-APBH group and 2-APB group/control group(all P＜0.05).WIS,PI,WIS × PI and GCS of rat endo-myocardium,GSC of mid-myocardium and GCS of epi-myocardium all positively correlated with SERCA(r=0.874,0.893,0.920,0.916,0.848,0.783,all P＜0.05).Conclusion MCE combined with STI,especially WISXPI and GCS of endo-myocardium could be used to evaluate the protective effect of 2-APB on heart of arsenic poisoned rats.

Assessment of health emergency drill capacity for poisoning incidents at the municipal level in Guangdong Province / 中国职业医学

ObjectiveTo assess the capacity of health emergency drills for poisoning emergencies at the municipal level in Guangdong Province. Methods A total of 21 municipal teams from cities in Guangdong Province participated in the health emergency drill competition, which included comprehensive tests and practical assessments. Results The pass rate for the total score, comprehensive tests, practical assessments of 21 municipal teams was 66.7%, 33.3%, 66.7%, respectively. The pass rate of the comprehensive tests was lower than that of practical assessments (P<0.01). The pass rate for the total score, comprehensive tests, and practical assessments of team from the Pearl River Delta region was higher than those in non-Pearl River Delta regions (88.9% vs 50.0%, 55.5% vs 16.7%, 88.9% vs 50.0%). For the four comprehensive test items, the highest pass rate was for personal protective principles against chemical poisoning (57.1%). For the five practical assessment items, the highest pass rate was for the selection and matching of personal protective equipment and practice of poisoning detection (both 71.4%). Conclusion It is urgent to improve the capacity of health emergency drills at the municipal level in Guangdong Province. Emphasis should be placed on strengthening capacity building in teams from non-Pearl River Delta regions.

Investigation on polyurethane grouting waterproof material-induced occupational acute 1,2-dichloroethane poisoning in the construction industry / 中国职业医学

ObjectiveTo analyze the causes of occupational acute 1,2-dichloroethane (1,2-DCE) poisoning accident during the use of polyurethane grouting materials for waterproof plugging operation in the construction industry. Methods By combining the clinical symptoms of the patient, worksite survey of occupational health and workplace occupational hazards monitoring method, the cause of an occupational acute 1,2-DCE poisoning accident was investigated at a construction site during the use of polyurethane grouting material for waterproofing and plugging operations. Results The patient was engaged in waterproof grouting work using polyurethane grouting material. The main volatile organic components in the raw materials were 1,2-DCE, with traces of dichloromethane, methyl acetate and others. The result of post-incident on-site investigation showed that the short-term exposure concentration of 1,2-DCE in the workplace air was 578.70 mg/m3, which was more than 30 times higher than the national occupational health standard limit. The mass concentration of 1,2-DCE in the patient's blood was 230 μg/L. Combined with the patient's occupational hazard exposure history, clinical manifestations, worksite survey of occupational health, and laboratory test results, according to GBZ 39-2016 Diagnosis of Occupational Acute 1,2-Dichloroethane Poisoning, this incident was diagnosed as a severe occupational acute 1,2-DCE poisoning event caused by the use of inferior polyurethane grouting material. Conclusion The excessive concentration of 1,2-DCE in the workplace air is the main cause of this poisoning accident. Construction sites with confined space operations should improve various occupational health management systems, occupational health engineering protective facilities, and personal protective equipment must be provided for workers.

Observation on the outcome of occupational chronic benzene poisoning treated with acupuncture combined with Du-Moxibustion / 中国职业医学

ObjectiveTo investigate the effects of acupuncture combined with Du-Moxibustion (ADM) on peripheral blood cell count and levels of immune factors in patients with occupational chronic benzene poisoning. Methods A total of 70 patients with occupational chronic benzene poisoning (leukopenia and neutropenia) were selected as the research subjects by judgement sampling method. They were randomly divided into a control group and an ADM group using a random number table method, with 35 cases in each group. Patients in the control group were treated with conventional Western medicine such as leukocyte boosting and symptomatic treatment. While patients in the ADM group were treated with ADM treatment in addition to treatments of the control group, once per week for five consecutive weeks. Peripheral blood samples of patients were collected before and after treatment from both groups, to detect cell counts and serum levels of immune factors. Results The white blood cell count, red blood cell count, absolute lymphocyte count, absolute neutrophil count, platelet count, and levels of hemoglobin, immunoglobulins (Ig) A, IgM, IgG, complement C3 and complement C4 of patients in both groups improved after treatment compared with those before treatment (all P<0.05). The white blood cell count, levels of IgA, IgM, IgG, complement C3 and complement C4 of patients in the ADM group were higher than those in the control group after treatment (all P<0.05). Conclusion ADM treatment can increase peripheral blood white blood cells and serum levels of immune factor in patients with occupational chronic benzene poisoning (leukopenia, neutropenia), which helps improve patient recovery and can be promoted clinically.

Alocasia odora poisoning due to calcium oxalate needle crystals in Japan / Journal of Rural Medicine

Objective: To elucidate the actual circumstances of damage caused by Japanese Alocasia (A) odora.Materials and Methods: We investigated cases in Japan from our own hospital in the eastern part of Shizuoka Prefecture as well as published reports.Results:A. dorais found in western Japan, and plants of the Alocasia genus are cultivated often. A. odora is frequently associated with food poisoning because its aboveground parts resemble those of Satoimo (Colocasia esculenta). Moreover, A. odora contains insoluble calcium oxalate crystals, which cause poisoning symptoms, such as oral pain, nausea, vomiting, and laryngeal edema, resulting in near asphyxia, diarrhea following shock, and skin dermatitis. Calcium oxalate crystals are abundant in Araceae family plants, and cases of health damage owing to the accidental ingestion of Araceae plants have been reported worldwide.Conclusion: Due to the strong irritation felt in the mouth upon contact with the plant, it is advisable to immediately spit out the plant and rinse the mouth. In addition to drug administration, ensuring a secure airway may be necessary if there is a risk of asphyxiation.

Influencing factors of arsenic metabolism pattern of population in drinking-water-borne endemic arsenic poisoning areas / 中华地方病学杂志

Objective:To investigate the arsenic metabolism pattern and possible influencing factors in the population in drinking-water-borne endemic arsenic poisoning (drinking-water-borne arsenic poisoning for short) areas.Methods:In December 2004, a cluster sampling method was used to select arsenic poisoning population (arsenic poisoning group) and healthy population (control group) in drinking-water-borne arsenic poisoning area of Bayannur City, Inner Mongolia Autonomous Region as the survey subjects. A questionnaire survey was conducted. Arsenic content in drinking water at home of survey subjects, the levels of urinary arsenic and its metabolites, including [trivalent arsenic (As Ⅲ), inorganic arsenic (iAs), monomethylarsenic acid (pentavalent, MMA V), dimethylarsenic acid (pentavalent, DMA V), total arsenic (tAs), percentage of inorganic arsenic (iAs%), percentage of monomethylarsenic acid (MMA%), percentage of dimethylarsenic acid (DMA%), primary methylation index (PMI), secondary methylation index (SMI)] were tested using high performance liquid chromatography-inductively coupled plasma mass spectrometry; nail arsenic and nail selenium levels were tested using atomic fluorescence spectrometer. The influencing factors of arsenic metabolism pattern were analyzed by multiple linear regression. Results:A total of 536 survey subjects were included, including 155 individuals in the arsenic poisoning group and 381 in the control group. The water arsenic level ranged from 0.0 to 825.7 μg/L. Compared with the control group, there was no significant difference in the distribution of gender, education level and dental fluorosis in the arsenic poisoning group ( P > 0.05), but there were significant differences in the distribution of age, marital status, smoking, drinking and water arsenic ( P < 0.05). Compared with the control group, the levels of urinary As Ⅲ, iAs, MMA V, DMA V, tAs, MMA%, MMA/DMA and nail arsenic in the arsenic poisoning group were higher ( P < 0.05), while the levels of urinary DMA%, SMI and nail selenium were lower ( P < 0.05); but there was no statistically significant difference in the levels of urinary iAs% and PMI ( P > 0.05). Gender, education level, depth of wells, water arsenic, total number of wells and nail arsenic were the influencing factors of urinary As Ⅲ (β = - 19.82, - 23.83, 0.61, 0.21, 7.26, 2.98, P < 0.05). Age, depth of wells, water arsenic and nail arsenic were the influencing factors of urinary tAs (β = 3.18, 3.25, 1.31, 15.59, P < 0.05). Gender, education level, depth of wells, water arsenic, total number of wells and nail arsenic were the influencing factors of urinary iAs (β = - 20.47, - 25.90, 0.64, 0.25, 7.87, 3.11, P < 0.05). Age, gender, education level, water arsenic and nail arsenic were the influencing factors of urinary MMA V (β = 0.52, - 17.07, - 21.84, 0.22, 2.77, P < 0.05). Age, depth of wells, water arsenic and nail arsenic were the influencing factors of urinary DMA V (β = 2.35, 2.47, 0.85, 9.22, P < 0.05). Conclusions:Compared with healthy individuals, there are differences in arsenic metabolism pattern among individuals with drinking-water-borne arsenic poisoning. Age, gender, education level, depth of wells, water arsenic, total number of wells and nail arsenic may be influencing factors of different arsenic metabolism patterns.