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Los test viscoelásticos son tecnologías diseñadas para estudiar la dinámica de formación del coágulo, identificar coagulopatías en tiempo real, realizar un diagnóstico y guiar el tratamiento hemostático de forma específica. Sus principales aplicaciones son el tratamiento de la hemorragia significativa en cualquier escenario, así como el de otras situaciones que cursen con alteraciones clínicamente relevantes de la hemostasia, como la coagulopatía del paciente crítico. Su uso se establece mediante algoritmos basados en la evidencia científica que están sujetos a variabilidad en función del contexto clínico. Basada en una encuesta distribuida en varios hospitales, esta revisión objetiva el grado de extensión y la homogeneidad en el uso de los test viscoelásticos en nuestro medio en cirugía cardiaca, en el trasplante hepático y en el paciente politraumatizado. Los resultados obtenidos revelan disparidad en aspectos clave que van desde su capacidad diagnóstica propiamente dicha hasta la interpretación de los parámetros básicos. Estos hallazgos permiten plantear potenciales áreas de investigación con el objetivo de mejorar su rendimiento.(AU)
Viscoelastic tests are designed to study the dynamics of clot formation, identify coagulopathies in real time, arrive at a diagnosis, and guide patient-specific administration of haemostatics. They are mainly used to treat clinically significant bleeding in any setting, and are also used in other situations involving clinically relevant alterations in haemostasis, such as coagulopathy in critically ill patients. These tests are administered following evidence-based algorithms that vary depending on the clinical context. This review summarises the results of a survey conducted in several hospitals to determine the prevalence and standardisation of viscoelastic tests in cardiac surgery, liver transplantation, and multiple trauma patients in Spain. The results reveal divergent opinions on key aspects, ranging from the diagnostic capacity of these tests to the interpretation of the basic parameters. On the basis of these findings, we propose a number of potential areas in which further research will improve the performance of these tests.(AU)
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Humanos , Trombose , Transtornos da Coagulação Sanguínea/diagnóstico , Transtornos da Coagulação Sanguínea/tratamento farmacológico , Transfusão de Sangue , Espanha , Perda Sanguínea CirúrgicaRESUMO
Viscoelastic tests are designed to study the dynamics of clot formation, identify coagulopathies in real time, arrive at a diagnosis, and guide patient-specific administration of haemostatics. They are mainly used to treat clinically significant bleeding in any setting, and are also used in other situations involving clinically relevant alterations in haemostasis, such as coagulopathy in critically ill patients. These tests are administered following evidence-based algorithms that vary depending on the clinical context. This review summarises the results of a survey conducted in several hospitals to determine the prevalence and standardisation of viscoelastic tests in cardiac surgery, liver transplantation, and multiple trauma patients in Spain. The results reveal divergent opinions on key aspects, ranging from the diagnostic capacity of these tests to the interpretation of the basic parameters. On the basis of these findings, we propose a number of potential areas in which further research will improve the performance of these tests.
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El manejo del sangrado en CEF es fundamental, ya que aumenta la tasa de complicaciones. El principal objetivo del manejo perioperatorio es lograr una buena hemostasia, es por esto que se realizó una revisión de las principales recomendaciones de la literatura internacional, que incluye medidas preoperatorias, intraoperatorias y postoperatorias.
Bleeding is an important factor in FESS since it increases the rate of complications. The main objective of perioperative management is to achieve good hemostasis. This is a review of the main recommendations of the international literature, that includes preoperative, intraoperative and postoperative measures.
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BACKGROUND: There is a high annual incidence of acute, nonvariceal upper gastrointestinal bleeding in Chinese adults. Early endoscopic intervention can reduce rates of rebleeding, surgery, and mortality. The metal clip is the most common method for establishing homeostasis; however, it possesses several limitations. In patients with bleeding secondary to large gastric ulcers, the clip will often fail to stop the bleeding. This article highlights the use of an elastic traction ring as a novel hemostatic method for patients with upper gastrointestinal bleeding. CASE SUMMARY: An elderly male presented to the emergency room with complaints of hematemesis and melena. Endoscopic examination revealed an ulcer (Forrest IIa) in the lesser curvature of the gastric antrum. Six tissue clips and one elastic traction ring were inserted into the stomach cavity to suture the ulcer. The patient recovered quickly without postoperative gastrointestinal bleeding. Two months later, the patient's ulcer was significantly healed. CONCLUSION: To our best knowledge, this is the first report to demonstrate the safety and efficacy of elastic traction rings for upper gastrointestinal bleeding. Elastic traction rings should be considered a routine therapeutic modality for patients with upper gastrointestinal bleeds.
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Resumen Introducción: La amigdalectomía es una de las cirugías más frecuentes en la población pediátrica. Aunque se considera una cirugía sencilla y segura, no está exenta de riesgos, siendo el principal la hemorragia posoperatoria. Objetivo: Evaluar el manejo de la hemorragia posamigdalectomía en otorrinolaringólogos en Chile. Material y Método: Se realizó un estudio transversal descriptivo sobre la experiencia y manejo de hemorragias posamigdalectomía mediante una encuesta difundida a socios activos de la Sociedad Chilena de Otorrinolaringología, Medicina y Cirugía de Cabeza y Cuello (SOCHIORL). Resultados: Se recopilaron respuestas de 102 de los 348 socios. El 97% ha presentado esta complicación. La medida inicial ante una hemorragia tardía fuera de una unidad de otorrinolaringología es derivar al servicio de urgencias en el 88% de los casos. En urgencia, la indicación más frecuente es administrar ácido tranexámico endovenoso en un 80%. En el caso de hemorragia sin estigmas de sangrado actual, un 68% indica alta con control precoz. Si se evidencian coágulos en la fosa amigdalina, el 72% indica hospitalización para observación. Si se evidencia sangrado activo, el 94% indica hospitalización y revisión de hemostasia en pabellón. Conclusión: Los resultados a nivel nacional, según este estudio, son concordantes con la literatura mundial. El manejo en el servicio de urgencia se basa en la experiencia del tratante. Respecto a los distintos escenarios clínicos, se recomienda hospitalización en caso de evidenciar coágulos y manejo en pabellón en la presencia de sangrado activo. El manejo es variable en pacientes sin hallazgos al examen físico.
Abstract Introduction: Tonsillectomy is one of the most frequent surgeries in the pediatric population. Although it is considered a simple and safe surgery, it has associated risks, the main one being postoperative bleeding. Aim: Evaluate the management of post-tonsillectomy hemorrhage in otorhinolaryngologists practicing in Chile. Material and Method: A descriptive cross-sectional study was carried out on the experience and management of post-tonsillectomy hemorrhage through a survey distributed to active members of the Sociedad Chilena de Otorrinolaringología, Medicina y Cirugía de Cabeza y Cuello (SOCHIORL). Results: Responses were collected from 102 out of 348 active members, of which 97% have presented this complication. The initial measure in a late hemorrhage occurring outside of an otolaryngology unit is referral to the emergency department in 88% of cases. In the emergency room, the most frequent management is to administer intravenous tranexamic acid in 80%. In the case of hemorrhage without trace of current bleeding, 68% discharge with early control. If clots are evident in the tonsillar fossa, 72% admit for observation. If there is evidence of active bleeding, 94% admit and perform revision surgery. Conclusion: Results of this study are consistent with international literature. Management in the emergency department is based on the experience of the treating physician and different clinical scenarios. Hospitalization is recommended when clots are observed, revision surgery when evidence of active bleeding and, in patients with no findings at the moment of the evaluation, management is variable.
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Humanos , Masculino , Feminino , Tonsilectomia/efeitos adversos , Hemorragia Pós-Operatória/epidemiologia , Otolaringologia , Tonsilectomia/métodos , Chile , Estudos Transversais , Inquéritos e Questionários , Fatores de RiscoRESUMO
OBJECTIVE: Staple line bleeding control (SLBC) after laparoscopic sleeve gastrectomy (LSG) is a serious problem. Cauterization alone is generally not preferred because of concerns about weakening the staple line. The aim of this study was to compare the suturing and monopolar cauterization methods for SLBC in LSG. METHODS: 212 patients were divided into two groups as cautery and suture groups. Demographic characteristics, intraoperative, and post-operative results were analyzed. RESULTS: Post-operative complications were seen in seven patients, four of them staple line bleeding (three patients were in the cautery group and one patient was in the suture group), and three of them leakage (all patients were in the suture group) from the staple line. There was no significant difference between the groups in terms of staple line bleeding (p = 0.35), staple line leakage (p = 0.09), blood loss (p = 0.12), intraoperative complications (p = 0.16), post-operative hemoglobin decrease (p = 0.63), and length of hospital stay (p = 0.35), but the operation time was longer in the suture group. CONCLUSION: This is the first study in literature comparing monopolar cauterization with another technique. Monopolar cauterization can be used for SLBC in LSG. It is a safe and efficient method as well as inexpensive.
OBJETIVO: El control del sangrado de la línea de grapas (SLBC) después de la gastrectomía en manga laparoscópica(LSG) es un problema grave. Generalmente, no se prefiere la cauterización sola debido a preocupaciones sobre el debilitamiento de la línea de grapas. El objetivo de este estudio fue comparar los métodos de sutura y cauterización monopolar para SLBC en LSG. MÉTODOS: 212 pacientes fueron divididos en 2 grupos de cauterización y sutura. Se analizaron las características demográficas, los resultados intraoperatorios y posoperatorios. RESULTADOS: Se observaron complicaciones posoperatorias en siete pacientes, cuatro de ellos sangrado en la línea de grapas (tres pacientes estaban en el grupo de cauterización, un paciente en el grupo de sutura) y tres de ellos fuga (todos los pacientes estaban en el grupo de sutura) del línea de grapas. No hubo diferencia significativa entre los grupos en términos de sangrado de la línea de grapas (p = 0.35), fuga dela línea de grapas (p = 0.09), pérdida de sangre (p = 0.12), complicaciones intraoperatorias (p = 0.16), disminución de hemoglobina postoperatoria (p = 0.63), duración dela estancia hospitalaria (p = 0.35), pero el tiempo de operación fue mayor en el grupo de sutura. CONCLUSIÓN: Este es el primer estudio que compara la cauterización monopolar con otra técnica. La cauterización monopolar se puede utilizar para SLBC en LSG. Es un método seguro, eficaz y económico.
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Laparoscopia , Obesidade Mórbida , Cauterização , Gastrectomia/efeitos adversos , Gastrectomia/métodos , Hemorragia/etiologia , Humanos , Laparoscopia/métodos , Obesidade Mórbida/cirurgia , Grampeamento Cirúrgico/métodos , Suturas/efeitos adversos , Resultado do TratamentoRESUMO
Hereditary Hemorrhagic Telangiectasia (HHT) is an autosomal-dominant genetic disorder involving defects in two predominant genes known as endoglin (ENG; HHT-1) and activin receptor-like kinase 1 (ACVRL1/ALK1; HHT-2). It is characterized by mucocutaneous telangiectases that, due to their fragility, frequently break causing recurrent epistaxis and gastrointestinal bleeding. Because of the severity of hemorrhages, the study of the hemostasis involved in these vascular ruptures is critical to find therapies for this disease. Our results demonstrate that HHT patients with high bleeding, as determined by a high Epistaxis Severity Score (ESS), do not have prolonged clotting times or alterations in clotting factors. Considering that coagulation is only one of the processes involved in hemostasis, the main objective of this study was to investigate the overall mechanisms of hemostasis in HHT-1 (Eng +/-) and HHT-2 (Alk1 +/-) mouse models, which do not show HHT vascular phenotypes in the meaning of spontaneous bleeding. In Eng +/- mice, the results of in vivo and in vitro assays suggest deficient platelet-endothelium interactions that impair a robust and stable thrombus formation. Consequently, the thrombus could be torn off and dragged by the mechanical force exerted by the bloodstream, leading to the reappearance of hemorrhages. In Alk1 +/- mice, an overactivation of the fibrinolysis system was observed. These results support the idea that endoglin and Alk1 haploinsufficiency leads to a common phenotype of impaired hemostasis, but through different mechanisms. This contribution opens new therapeutic approaches to HHT patients' epistaxis.
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Predicting the progression of small aneurysms is a main challenge in abdominal aortic aneurysm (AAA) management. The combination of circulating biomarkers and image techniques might provide an alternative for risk stratification. We evaluated the association of plasma TAT complexes (TAT) and D-dimer with AAA severity in 3 groups of patients: group 1, without AAA (n = 52), group 2, AAA 40-50 mm (n = 51) and group 3, AAA > 50 mm (n = 50). TAT (p < 0.001) and D-dimer (p < 0.001) were increased in patients with AAA (groups 2 and 3) vs. group 1. To assess the association between baseline TAT and D-dimer concentrations, and AAA growth, aortic diameter and volume (volumetry) were measured by computed tomography angiography (CTA) in group 2 at recruitment (baseline) and 1-year after inclusion. Baseline D-dimer and TAT levels were associated with AAA diameter and volume variations at 1-year independently of confounding factors (p ≤ 0.044). Additionally, surgery incidence, recorded during a 4-year follow-up in group 2, was associated with larger aneurysms, assessed by aortic diameter and volumetry (p ≤ 0.036), and with elevated TAT levels (sub-hazard ratio 1.3, p ≤ 0.029), while no association was found for D-dimer. The combination of hemostatic parameters and image techniques might provide valuable tools to evaluate AAA growth and worse evolution.
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Resumen Introducción: dentro de los insectos del orden lepidóptero, la familia Saturniidae tiene más de 2.400 especies, allí se encuentran Hylesia y Lonomia. Objetivo: presentar dos casos de pacientes con accidente lonómico, el manejo y desenlace para reconocer la importancia de estos eventos en las regiones silvestres de la Orinoquia colombiana. Casos clínicos: paciente de 8 años proveniente de área rural quien refería contacto en región palmar de mano derecha con gusanos quién 48 horas después de dicho contacto presentó equimosis en extremidades, flictena sangrante en talón derecho, cefalea, escalofríos y artralgias, además se evidenciaron tiempos de coagulación prolongados. Paciente de 13 años de características similares a las del caso previamente descrito sin presentar manifestaciones clínicas, pero que presentaba tiempos de coagulación prolongados. Se consideró que cursaba con accidente lonómico por lo que se aplicaron 5 ampollas de suero antilonómico polivalente a cada una sin registrar reacciones adversas. En ambos casos cursaron con evolución clínica adecuada con disminución a rangos de seguridad de tiempos de coagulación. Conclusiones: el veneno lonómico actúa en la cascada de coagulación produciendo manifestaciones hemorrágicas de gravedad variable. El suero antilonómico es el único tratamiento eficaz, a pesar de estar disponible desde hace más de 20 años en Brasil hay un 5% de progresión a síndromes hemorrágicos severos y un 1.5 a 2% de mortalidad. A pesar de tener gran relevancia clínica en las Américas existe subregistro, es importante conocer sus manifestaciones y el manejo para así poder evitar complicaciones mortales.
Abstract Background: among the insects of the order Lepidoptera, the family Saturniidae has more than 2,400 species, there are Hylesia and Lonomia. Objective: to present two cases of patients with lonomic accident, the management and outcome to recognize the importance of these events in the wild regions of the Colombian orinoquia. Clinical case: an 8-year-old patient from a rural area who refers to contact in the palmar region of the right hand with worms for more than 48 hours, presents ecchymosis in the extremities, bleeding flictena in the right heel, headache, chills and arthralgias. Clotting times are performed which are prolonged. A 13-year-old patient who also referred contact without presenting clinical manifestations but presenting prolonged clotting times. They are considered to occur due to a lonomic accident, so 5 ampoules of polyvalent antilonomic serum are administered to each one without registering adverse reactions. They have an adequate clinical evolution with a decrease in the safe ranges of clotting times. Conclusions: the lonomic venom acts in the coagulation cascade producing hemorrhagic manifestations of variable severity. Antilonomic serum is the only effective treatment, despite being available for more than 20 years in Brazil, there is a 5% progression to severe hemorrhagic syndromes and 1.5 to 2% mortality. Despite being of great clinical relevance in the Americas, there is an underreporting, it is important to know its manifestations and management in order to avoid fatal complications.
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La caries dental y la placa dental se encuentran entre las enfermedades más comunes en todo el mundo y son causadas por una mezcla de microorganismos y restos de alimentos. Tipos específicos de bacterias productoras de ácido, especialmente Streptococcus mutans, colonizan la superficie dental y causan daño a la estructura dental dura en presencia de carbohidratos fermentables, por ejemplo, sacarosa y fructosa. Por otro lado, el sangrado posterior a la extracción es una complicación reconocida y frecuente en la práctica dental, que se define como la pérdida de sangre que continúa más allá de las 8 a 12 horas después de la exodoncia. Existe una amplia gama de técnicas sugeridas y sustancias para el tratamiento del sangrado post-extracción, que incluyen intervenciones dirigidas tanto a causas locales como sistémicas. El ácido tánico es una de las sustancias astringente que precipitan proteínas, pero no penetran en las células, por lo que inciden solo en la capa superficial. Su objetivo se enfoca a robustecer la superficie para acrecentar su resistencia mecánica y reducir la exudación. El objetivo de este estudio fue determinar la presencia de S. mutans en las biopelículas dentales y al mismo tiempo evaluar la actividad del ácido tánico como inhibidor del sangrado profuso en las extracciones dentales. S. mutans se aisló en el 92,5% de los pacientes evaluados. Los tiempos de hemostasia post-exodoncia fue significativamente menor en el grupo de pacientes a los que se les aplicó el ácido tánico en comparación a los que no se les aplicó(AU)
Tooth decay and dental plaque are among the most common diseases worldwide and are caused by a mix of microorganisms and food debris. Specific types of acid-producing bacteria, especially Streptococcus mutans, colonize the tooth surface and cause damage to hard tooth structure in the presence of fermentable carbohydrates, for example, sucrose and fructose. On the other hand, post-extraction bleeding is a recognized and frequent complication in dental practice, defined as blood loss that continues beyond 8 to 12 hours after extraction. There is a wide range of suggested techniques and substances for the treatment of post-extraction bleeding, including interventions targeting both local and systemic causes. Tannic acid is one of the astringent substances that precipitate proteins, but does not penetrate the cells, so it affects only the superficial layer. Its objective is focused on strengthening the surface to increase its mechanical resistance and reduce exudation. The objective of this study was to determine the presence of S. mutans in dental biofilms and at the same time to evaluate the activity of tannic acid as an inhibitor of profuse bleeding in dental extractions. S. mutans was isolated in 92.5% of the patients evaluated. Post-extraction hemostasis times were significantly shorter in the group of patients who received tannic acid compared to those who did not(AU)
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Humanos , Masculino , Feminino , Streptococcus mutans , Cirurgia Bucal , Cariogênicos , Biofilmes , Bactérias , Ácidos , Carboidratos , Placa Dentária , Alimentos , FrutoseRESUMO
Introducción: El modelo de la coagulación ha experimentado cambios para alcanzar un consenso con relación a los trastornos hemorrágicos que se aprecian en la práctica médica. El modelo celular de la coagulación es el más aceptado con el que se cuenta dentro de esta área del conocimiento, sin embargo, es poco conocido e integrado en los planes de estudio en Cuba. Objetivo: Confeccionar una página web que integre los elementos actuales acerca del modelo celular de la coagulación. Materiales y métodos: Se realizó un estudio de tipo innovación tecnológica entre los meses de enero de 2017 y enero de 2018 en Ciego de Ávila. Se desarrolló en tres etapas: confección, validación por expertos y comprobación de efectividad por usuarios. Para el diseño se empleó el software Drupal, y el lenguaje HTML. Para la comprobación se contó con dos grupos de expertos que valorara desde el punto de vista de pertinencia educativa e informática. Se comprobó la efectividad mediante un posprueba aplicada a 106 estudiantes de medicina y 16 residentes. Resultados: Se obtuvieron valoraciones de adecuado y muy adecuado por consenso de expertos, siendo la originalidad (7,13 ± 1,24) y la pertinencia (7,20 ± 1,74) los aspectos mejor valorados. Más del 90 % de los usuarios valoraron igualmente la página web como muy satisfactorias según los contenidos tratados y la originalidad. Durante la posprueba el 84,91 por ciento de los estudiantes y 66,67 por ciento de los residentes se suscriben a la calificación de excelente. Conclusiones: Se confeccionó una página con la capacidad de integrar los elementos actuales acerca del modelo celular de la coagulación(AU)
Introduction: The coagulation model has undergone changes to reach a consensus regarding the bleeding disorders that are seen in medical practice. The cellular model of coagulation is the most accepted that is available within this area of knowledge; however, it is little known and integrated into the curricula in Cuba. Objective: Create a web page that integrates the current elements about the cellular model of coagulation. Materials and methods: A technological innovation study was carried out between January 2017 and January 2018 in Ciego de Ávila province. It was developed in three stages: preparation, validation by experts and verification of effectiveness by users. For the design was used Drupal software, and HTML language. For the verification, there were two groups of experts to assess from the point of view of educational and computer relevance. Effectiveness was tested by a post-test applied to 106 medical students and 16 residents. Results: Adequate and very adequate assessments were obtained by consensus of experts, with originality (7.13 ± 1.24) and relevance (7.20 ± 1.74) being the best valued aspects. More than 90 percent of users also rated the website as very satisfactory according to the contents treated and originality. During the post-test, 84.91 percent of students and 66.67 percent of residents confirmed the excellent rating. Conclusions: A web page was made with the ability to integrate the current elements about the cellular model of coagulation(AU)
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Humanos , Coagulação Sanguínea , Conhecimento , SoftwareRESUMO
Resumen ANTECEDENTES: El procedimiento quirúrgico del embarazo intersticial puede complicarse con hemorragia difícil de controlar; por esto en los últimos años se recurre a las técnicas que permiten el control hemostático, con lo que disminuyen la morbilidad y mortalidad relacionadas con el procedimiento. OBJETIVO: Describir el proceso para establecer el diagnóstico y decidir el tratamiento quirúrgico conservador en una paciente con embarazo intersticial con antecedente de salpingectomía homolateral y deseo de preservación uterina. CASO CLINICO: Paciente de 27 años, con antecedentes de un parto, tres abortos y un embarazo ectópico previo, con salpingectomía izquierda. Acudió a consulta debido a un retraso menstrual de siete semanas y dolor pélvico agudo. Ante la sospecha de embarazo ectópico se integró el protocolo diagnóstico. La cuantificación de la fracción-β de hormona gonadotropina coriónica fue de 8962 mlU/mL, el ultrasonido transvaginal reportó una imagen compatible con saco gestacional hacia la región del cuerno izquierdo y probable hemoperitoneo. En la laparotomía exploradora se encontraron: hemoperitoneo y embarazo intersticial izquierdo. Con el propósito de preservar la fertilidad se hizo una doble ligadura de la arteria uterina izquierda, a nivel de istmo uterino y del ligamento útero-ovárico y resección del saco gestacional intersticial, con cornuostomía. CONCLUSION: El embarazo intersticial es una urgencia obstétrica con alto riesgo de ruptura y hemorragia, por fortuna poco frecuente. La ligadura de las arterias uterinas, previa a la ablación quirúrgica del saco gestacional, es una alternativa individualizada en pacientes con esta complicación.
Abstract BACKGROUND: The surgical procedure of interstitial pregnancy can be complicated by bleeding that is difficult to control; for this reason, in recent years, techniques that allow hemostatic control to have been used, thus reducing morbidity and mortality related to the procedure. OBJECTIVE: To describe the process to establish the diagnosis and decide the conservative surgical treatment in a patient with interstitial pregnancy with a history of homolateral salpingectomy and desire for uterine preservation. CLINICAL CASE: 27-year-old patient, with a history of one childbirth, three miscarriages and a previous ectopic pregnancy, with left salpingectomy. She came for consultation due to a seven-week menstrual delay and acute pelvic pain. In view of the suspicion of ectopic pregnancy, the diagnostic protocol was integrated. The quantification of the β-fraction of chorionic gonadotropin hormone was 8962 mlU/mL, the transvaginal ultrasound reported an image compatible with gestational sac towards the left horn region and probable hemoperitoneum. At exploratory laparotomy, hemoperitoneum and left interstitial pregnancy were found. To preserve fertility, a double ligation of the left uterine artery at the level of the uterine isthmus and the utero-ovarian ligament and resection of the interstitial gestational sac with cornuostomy was performed. CONCLUSION: Interstitial pregnancy is an obstetric emergency with a high risk of rupture and hemorrhage, fortunately rare. Ligation of the uterine arteries, prior to surgical ablation of the gestational sac, is an individualized alternative in patients with this complication.
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Snakebite envenoming is a recurrent and serious tropical disease that has been categorized as neglected by the World Health Organization (WHO). Due to the high number of species and clinical cases, the venomic studies of venomous snakes increase every year. In Brazil, two of the main genera of interest to health are Bothrops and Crotalus, which together comprise the largest percentage of accidents with venomous animals in the national territory. Among the most common complications caused by envenoming are hemostasis disorders, which affect the coagulation cascade and its physiological processes, and can cause from bleeding to severe coagulopathies. The main families of proteins responsible for these effects are the SVMP (snake venom metalloproteases) and SVSP (snake venom serine proteases), which include thrombin-like enzymes and/or activators of the coagulation cascade such as factor V, X, and prothrombin. Excessive and unbridled consumption of these factors can cause defibrination and blood incoagulability, which accentuates the possibility of hemostatic problems. Individual biochemical profiles and fibrinogenolytic activity were evaluated by SDS-PAGE, showing differences in venom composition and distribution of these enzymes. The samples from B. jararaca and C. durissus terrificus also showed large differences when evaluated for thrombin-like activity, in wich the snakes from B. jajaraca species showed a higher activity compared to C. durissus terrificus.
O envenenamento por picada de serpente é uma doença tropical, recorrente e preocupante que foi categorizada como negligenciada pela Organização Mundial de Saúde (OMS). Devido ao alto número de espécies e dos casos clínicos, os estudos sobre os venenos das serpentes peçonhentas aumentam a cada ano. No Brasil, dois dos principais gêneros de interesse para a saúde são as Bothrops e as Crotalus, que juntos englobam a maior porcentagem de acidentes com animais peçonhentos no território nacional. Entre as complicações mais comuns causadas pelo envenenamento estão os distúrbios da hemostasia, que afetam a cascata de coagulação e seus processos fisiológicos, podendo causar desde hemorragias até coagulopatias severas. As principais famílias de proteínas responsáveis por esses efeitos são as SVMP (snake venom metalloproteases) e as SVSP (snake venom serino proteases), que abrangem enzimas thrombin-like e/ou ativadores da cascata de coagulação como o fator V, X e protrombina. O consumo exagerado e desenfreado desses fatores pode causar desfibrinação e incoagulabilidade sanguínea, o que acentua a possibilidade de problemas hemostáticos. Os perfis bioquímicos individuais e a atividade fibrinogênolítica foram avaliados por meio de SDS-PAGE, mostrando diferenças nas composições dos venenos e distribuição dessas enzimas. As amostras de B. jararaca e C. durissus terrificus também mostraram grandes diferenças quando submetidas ao ensaio clínico de atividade thrombin-like, em que as serpentes da espécie B. jajaraca apresentaram uma atividade maior em comparação as C. durissus terrificus.
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Introducción: El modelo de la coagulación ha experimentado cambios para alcanzar un consenso con relación a los trastornos hemorrágicos que se aprecian en la práctica médica. El modelo celular de la coagulación es el más aceptado con el que se cuenta dentro de esta área del conocimiento, sin embargo, es poco conocido e integrado en los planes de estudio en Cuba. Objetivo: Confeccionar una página web que integre los elementos actuales acerca del modelo celular de la coagulación. Materiales y métodos: Se realizó un estudio de tipo innovación tecnológica entre los meses de enero de 2017 y enero de 2018 en Ciego de Ávila. Se desarrolló en tres etapas: confección, validación por expertos y comprobación de efectividad por usuarios. Para el diseño se empleó el software Drupal, y el lenguaje HTML. Para la comprobación se contó con dos grupos de expertos que valorara desde el punto de vista de pertinencia educativa e informática. Se comprobó la efectividad mediante un posprueba aplicada a 106 estudiantes de medicina y 16 residentes. Resultados: Se obtuvieron valoraciones de adecuado y muy adecuado por consenso de expertos, siendo la originalidad (7,13 ± 1,24) y la pertinencia (7,20 ± 1,74) los aspectos mejor valorados. Más del 90 por ciento de los usuarios valoraron igualmente la página web como muy satisfactorias según los contenidos tratados y la originalidad. Durante la posprueba el 84,91 por ciento de los estudiantes y 66,67 por ciento de los residentes se suscriben a la calificación de excelente. Conclusiones: Se confeccionó una página con la capacidad de integrar los elementos actuales acerca del modelo celular de la coagulación(AU)
Introduction: The coagulation model has undergone changes to reach a consensus regarding the bleeding disorders that are seen in medical practice. The cellular model of coagulation is the most accepted that is available within this area of knowledge; however, it is little known and integrated into the curricula in Cuba. Objective: Create a web page that integrates the current elements about the cellular model of coagulation. Materials and methods: A technological innovation study was carried out between January 2017 and January 2018 in Ciego de Ávila province. It was developed in three stages: preparation, validation by experts and verification of effectiveness by users. For the design was used Drupal software, and HTML language. For the verification, there were two groups of experts to assess from the point of view of educational and computer relevance. Effectiveness was tested by a post-test applied to 106 medical students and 16 residents. Results: Adequate and very adequate assessments were obtained by consensus of experts, with originality (7.13 ± 1.24) and relevance (7.20 ± 1.74) being the best valued aspects. More than 90 percent of users also rated the website as very satisfactory according to the contents treated and originality. During the post-test, 84.91 percent of students and 66.67 percent of residents confirmed the excellent rating. Conclusions: A web page was made with the ability to integrate the current elements about the cellular model of coagulation(AU)
Assuntos
Humanos , Ensino/educação , Coagulação Sanguínea , Conhecimento , Aprendizagem , Estudantes de Medicina , Redes de Comunicação de ComputadoresRESUMO
Abstract Objective To describe the clinical experience with the B-Lynch technique in the management of postpartum hemorrhage as well as the factors related to the indication of the technique and to present the success rates of the application of the B-Lynch technique. Methods Observational, retrospective, cross-sectional, and analytical study. Patient data was obtained through the study of medical records. The study population comprised of patients who underwent hemostatic suture using the B-Lynch technique, including 104 patients within the period from January 1, 2005, to December 31, 2019. Results Of the total of 104 patients, 82.7% did not present any complications. Blood transfusion and intensive care unit admission were the most prevalent complications, with 13.5% and 15.4%, respectively. Only 1% of the patients had puerperal and surgical site infections. The factors most related to the application of the technique were the presence of previous cesarean section (30.8%), use of oxytocin (16.3%), and pre-eclampsia (11.6%). Puerperal hysterectomy was performed in 4.8% of the patients due to failure of the method. Conclusion The clinical experience with the B-Lynch technique was satisfactory since it presented few complications, with excellent results in hemorrhagic control. Previous cesarean section, the use of oxytocin, and preeclampsia stood out as factors related to the indication of the application of the technique, and the success rate in controlling postpartum hemorrhage was 95.2%.
Resumo Objetivo Descrever a experiência clínica com a técnica de B-Lynch no manejo da hemorragia pós-parto e os fatores relacionados à indicação da técnica bem como apresentar as taxas de sucesso da aplicação da técnica de B-lynch. Métodos Estudo observacional, retrospectivo, de corte transversal e analítico. Os dados foram obtidos por estudo de prontuário. A população do estudo foi constituída de pacientes submetidas à sutura hemostática com a técnica de B-Lynch, sendo incluídas 104 pacientes dentro do período de 01 de janeiro de 2005 a 31 de dezembro de 2019. Resultados Do total de 104 pacientes, 82,7% não apresentaram qualquer complicação. A transfusão de sangue e a internação na UTI foram as complicações mais prevalentes, com 13,5% e 15,4%, respectivamente. Apenas 1% teve infecção puerperal e do sítio cirúrgico. Os fatores mais relacionados com a aplicação da técnica foram a presença de cesárea anterior (30,8%), uso de ocitocina (16,3%) e pré-eclâmpsia (11,6%). A histerectomia puerperal foi realizada em 4,8% das pacientes por falha do método. Conclusão A experiência clínica com a técnica de B-Lynch foi satisfatória, pois apresentou poucas complicações, com excelentes resultados no controle hemorrágico. A cesárea anterior, o uso de ocitocina e a pré-eclâmpsia se destacaram como fatores relacionados à indicação da aplicação da técnica. A taxa de sucesso avaliada foi de 95,2%.
Assuntos
Humanos , Feminino , Gravidez , Hemorragia Pós-Parto/cirurgia , Cesárea/efeitos adversos , Estudos Transversais , Estudos Retrospectivos , Técnicas de SuturaRESUMO
Abstract Damage control techniques applied to the management of thoracic injuries have evolved over the last 15 years. Despite the limited number of publications, information is sufficient to scatter some fears and establish management principles. The severity of the anatomical injury justifies the procedure of damage control in only few selected cases. In most cases, the magnitude of the physiological derangement and the presence of other sources of bleeding within the thoracic cavity or in other body compartments constitutes the indication for the abbreviated procedure. The classification of lung injuries as peripheral, transfixing, and central or multiple, provides a guideline for the transient bleeding control and for the definitive management of the injury: pneumorraphy, wedge resection, tractotomy or anatomical resection, respectively. Identification of specific patterns such as the need for resuscitative thoracotomy, or aortic occlusion, the existence of massive hemothorax, a central lung injury, a tracheobronchial injury, a major vascular injury, multiple bleeding sites as well as the recognition of hypothermia, acidosis or coagulopathy, constitute the indication for a damage control thoracotomy. In these cases, the surgeon executes an abbreviated procedure with packing of the bleeding surfaces, primary management with packing of some selected peripheral or transfixing lung injuries, and the postponement of lung resection, clamping of the pulmonary hilum in the most selective way possible. The abbreviation of the thoracotomy closure is achieved by suturing the skin over the wound packed, or by installing a vacuum system. The management of the patient in the intensive care unit will allow identification of those who require urgent reintervention and the correction of the physiological derangement in the remaining patients for their scheduled reintervention and definitive management.
Resumen Las técnicas de control de daños aplicadas al manejo de lesiones torácicas han evolucionado en los últimos 15 años. A pesar de que el número de publicaciones es limitado, la información es suficiente para desvirtuar algunos temores y establecer los principios de manejo. La severidad del compromiso anatómico justifica el procedimiento de control de daños solamente en algunos casos. En la mayoría, la magnitud del deterioro fisiológico y la presencia de otras fuentes de sangrado dentro del tórax o en otros compartimientos corporales constituyen la indicación del procedimiento abreviado. La clasificación de la lesión pulmonar como periférica, transfixiante y central o múltiple, proporciona una pauta para el control transitorio del sangrado y para el manejo definitivo de la lesión: neumorrafía, resección en cuña, tractotomía o resecciones anatómicas, respectivamente. La identificación de ciertos patrones como la necesidad de toracotomía de reanimación o de oclusión aórtica, la existencia de un hemotórax masivo, de una lesión pulmonar central, una lesión traqueobronquial o una lesión vascular mayor, así como el reconocimiento de hipotermia, acidosis o coagulopatía, constituyen la indicación de una toracotomía de control de daños. En estos casos, el cirujano concluye de manera abreviada los procedimientos con empaquetamiento de las superficies sangrantes, el manejo primario con empaquetamiento de algunas lesiones pulmonares periféricas o transfixiante seleccionadas y el aplazamiento de la resección pulmonar, pinzando el hilio de la manera más selectiva posible. La abreviación del cierre de la toracotomía se logra con la sutura de la piel sobre el empaquetamiento de la herida, o mediante la instalación de un sistema de presión negativa. El manejo del paciente en cuidados intensivos permitirá identificar aquellos que requieren reintervención urgente y corregir la alteración fisiológica de los restantes para su reoperación programada y manejo definitivo.
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Resumo Introdução: A cirurgia mais comum da região cervical é a tireoidectomia. Atualmente, várias tecnologias estão disponíveis para hemostasia intraoperatória. Objetivo: Comparar o desempenho de três tecnologias (elétrica monopolar e bipolar e ultrassônica) no tempo operatório e complicações pós-operatórias. Método: Pacientes submetidos à tireoidectomia total sem tratamento prévio foram incluídos. Desenho científico usado: estudo de série prospectiva. Resultados: Foram incluídos 834 pacientes, 661 mulheres (79,3%) e 173 homens (20,7%). O diagnóstico foi de neoplasia maligna em 528 pacientes (63,3%) e de doença benigna em 306 pacientes (36,7%). O bisturi elétrico monopolar foi usado em 280 pacientes (33,6%), energia bipolar em 210 (25,2%) e ultrassônica em 344 (41,3%). O tempo operatório foi significantemente menor com bisturi ultrassônico ou bipolar quando comparado com elétrico. Em um modelo de regressão linear, sexo, diagnóstico de malignidade e tipo de energia foram significantes para duração do procedimento. Os pacientes operados com bisturi ultrassônico ou bipolar apresentaram incidência significantemente menor de hipoparatireoidismo. Conclusão: O uso do bisturi ultrassônico ou bipolar reduz de forma significante o tempo operatório e a incidência de hipoparatireoidismo transitório.
Assuntos
Humanos , Masculino , Feminino , Tireoidectomia/efeitos adversos , Hipoparatireoidismo , Complicações Pós-Operatórias/epidemiologia , Instrumentos Cirúrgicos , Estudos Prospectivos , Duração da CirurgiaRESUMO
This study aimed to identify, by means of thromboelastometry assessment, altered thrombotic risk in dogs with primary and secondary IMHA by E. canis infection after initiating the immunosuppressive therapy with mycophenolate mofetil. The animals' screening was based on complete blood count (CBC), biochemical and urine tests. Dogs with moderate to severe anemia (hematocrit ≤ 25%) which showed symptoms of immune-mediated hemolysis, such as spherocytosis, positive saline agglutination, bilirubinuria and/or hemoglobinuria, were included. Blood and urine samples were collected at two different moments. The first sample (M1) was collected at the time of diagnosis, when hematocrit was lower or equal to 25% before treatment with mycophenolate mofetil (Accord ®); the second sample (M2) was collected after treatment with mycophenolate mofetil, when hematocrit was greater or equal to 30%. Five out of the twelve animals selected died before the end of the study. No reduction in thrombotic risk was observed in the animals treated with mycophenolate mofetil. The animals that presented hypocoagulation at the time of diagnosis showed the worst prognosis, and their reticulocyte count displayed a better prognostic value than their erythrocytes count at the time of diagnosis.(AU)
O objetivo deste estudo foi esclarecer se há alteração do risco trombótico em cães com anemia hemolítica imunomediada primária e secundária a E.canis, avaliado por meio da tromboelastometria, após início de tratamento com micofenolato de mofetila. A seleção dos animais foi baseada na avaliação de hemograma, exame bioquímico e urinálise. Cães com anemia moderada a severa (hematócrito ≤ 25%), com sinais de hemólise imunomediada, como esferocitose, aglutinação em salina positivo, bilirrubinúria e/ ou hemoglobinúria, foram incluídos. As amostras de sangue e urina foram coletadas em dois momentos diferentes. A primeira amostra (M1) foi coletada no momento do diagnóstico, quando o hematócrito era igual ou inferior a 25%, sem fazer uso do micofenolato de mofetila (Accord®), e o segundo momento (M2), após tratamento com micofenolato de mofetila, quando o hematócrito era igual ou maior que 30%. Doze animais foram selecionados, cinco morreram antes do término do estudo. Não houve diminuição do risco trombótico entre os animais tratados com micofenolato de mofetila; os animais que apresentaram menor coagulabilidade apresentaram pior prognóstico, e a contagem de reticulócitos apresentou melhor valor prognóstico do que a contagem de hemácias no momento do diagnóstico.(AU)
Assuntos
Animais , Cães , Imunossupressores/uso terapêutico , Anemia Hemolítica/complicações , Anemia Hemolítica/veterinária , Ácido Micofenólico/análise , Ácido Micofenólico/efeitos adversos , Tromboelastografia/veterinária , Ehrlichia canis , Contagem de Eritrócitos/veterinária , HemostasiaRESUMO
BACKGROUND AND OBJECTIVES: To evaluate the pressure generated by an adjustable hemostasis clamp on arteriovenous fistulas (AVF) during the hemostasis proccess, and compare it with the direct two-finger pressure applied by the patient. To evaluate the variations of the direct two-finger pressure along the hemostasis process. METHODS: We analyzed data obtained in 51 hemodialysis procedures from 15 patients. AVF intraaccess pressure was used as indirect indicator of the pressure generated by both methods. It was recorded before venous needle removal (PBasal), at clamp application (P1), after clamp adjustement by a nurse (P2), at the beginning of the direct two-finger pressure by the patient (M0), after 3â¯min of two-finger pressure (M3) and after 6â¯min of two-finger pressure (M6). RESULTS: Intra-access pressure was lower with the adjusted clamp (P2) than with the direct two-finger pressure by the patient (M0) (variation of -18.57%, 95%CI -14.09 to -4.77â¯mmHg, Pâ¯<â¯0.001). Intraaccess pressure generated by the direct two-finger pressure method showed a decreasing trend along the hemostasis process (M3-M0: -8.82â¯mmHg, Pâ¯<â¯0.001; M6-M0: -12.55â¯mmHg, Pâ¯<â¯0.001). CONCLUSION: An adjustable fistula arm clamp generates a lower pressure in AVF than the direct two-finger pressure applied by the patient. The latter showed a decreasing trend along the hemostasis process. These data suggest that some of the recommendations from clinical guidelines could be based on inaccurate premises.
Assuntos
Fístula Arteriovenosa , Derivação Arteriovenosa Cirúrgica , Derivação Arteriovenosa Cirúrgica/métodos , Hemostasia , Humanos , Diálise Renal/métodos , Extremidade SuperiorRESUMO
A hemorragia digestiva alta é emergência médica frequente e potencialmente grave. Pode ser causa varicosa e não varicosa. O objetivo deste trabalho foi avaliar as características clínicas, eficácia do tratamento, evolução e desfecho clínico de pacientes com cirrose hepática. É estudo retrospectivo comparativo com base nos prontuários médicos de pacientes que evoluíram com sangramento gastrointestinal alta de causa varicosa durante o primeiro semestre de 2018 e o de 2021. Em 2018 foram 44 (grupo 1) e em 2021 45 pacientes (grupo 2). Em conslusão, o perfil dos pacientes é em sua maioria de homens na 5ª. década de vida. A principal causa da cirrose foi o etilismo. A incidência varizes esofágicas aumentou e a de varizes gástrica se manteve. O tempo de internamento geral e em UTI e os encaminhamentos a UTI aumentaram, assim como o uso de todos os hemoderivados. O balão esofágico foi mais utilizado e mais efetivo na redução da mortalidade.
Upper gastrointestinal bleeding is a frequent and potentially serious medical emergency. It can have a varicose and non-varicose cause. The objective of this study was to evaluate the clinical characteristics, treatment efficacy, evolution and clinical outcome of patients with liver cirrhosis. This is a retrospective comparative study based on the medical records of patients who developed variceal upper gastrointestinal bleeding during the first half of 2018 and 2021. In 2018, there were 44 patients (group 1) and in 2021, 45 patients (group 2). In conclusion, the profile of patients is mostly men in the 5th. decade of life. The main cause of cirrhosis was alcoholism. The incidence of esophageal varices increased and that of gastric varices remained. The overall and ICU length of stay and ICU referrals increased, as did the use of all blood products. The esophageal balloon was the most used and most effective in reducing mortality.
