Complicaciones cardiovasculares en pacientes COVID-19 hospitalizados en Unidades de Pacientes Críticos en Chile. Registro COVICAR / Cardiovascular complications in COVID-19 patients admitted to intensive care units in Chilean hospitals

BACKGROUND: Patients with a cardiovascular (CV) history may be at greater risk of becoming ill and die due to SARS-CoV-2. AIM: To assess the incidence of CV complications in COVID-19 patients, the type of complication, and their association with CV history. MATERIAL AND METHODS: The clinical course of 1,314 patients with COVID-19 admitted consecutively to critical care units of 10 Chilean hospitals was registered between April and August of 2020. RESULTS: The median age of patients was 59 years and 66% were men. One hundred-four (8%) had a CV history, namely heart failure (HF) in 53 (4.1%), coronary heart disease in 50 (3.8 %), and atrial fibrillation in 36 (2.7 %). There were CV complications in 359 patients (27.3%). The most common were venous thrombosis in 10.7% and arrhythmias in 10.5%, HF in 7.2%, type 2 acute myocardial infarction in 4.2%, arterial thrombosis in 2.0% and acute coronary syndrome (ACS) in 1.6%. When adjusted by age, sex and risk factors, only HF (Odds ratio (OR) = 7.16; 95% confidence intervals (CI), 3.96-12.92) and ACS (OR = 5.44; 95% CI, 1.50-19.82) were significantly associated with CV history. There was no association with arrhythmias, type 2 acute myocardial infarction, arterial or venous thrombosis. CONCLUSIONS: Patients with a history of CV disease are at greater risk of suffering HF and ACS when hospitalized due to COVID-19. Arrhythmias, type 2 AMI, and arterial or venous thrombosis occur with the same frequency in patients with or without CV history, suggesting that these complications depend on inflammatory phenomena related to the infection.

Prevalence and risk factors of deep venous thrombosis of lower extremity in patients with stage Ⅲ and Ⅳ pressure ulcers on admission / 中华烧伤杂志

Objective: To investigate the incidence and risk factors of deep venous thrombosis (DVT) of lower extremity in patients with stage Ⅲ and Ⅳ pressure ulcer on admission. Methods: A retrospective case series study was conducted. A total of 241 patients with stage Ⅲ and Ⅳ pressure ulcers who met the inclusion criteria and were discharged from the Department of Wound Repair of the First People's Hospital of Zhengzhou from January 1, 2015 to December 31, 2019 were enrolled in this study, including 134 males and 107 females, aged 22 to 93 years, with a median age of 68 years; 37 patients were with stage Ⅲ pressure ulcers and 204 patients were with stage Ⅳ pressure ulcers. The DVT occurrence of patients was recorded. According to whether DVT of lower extremity veins was diagnosed by color Doppler ultrasound within 48 h after admission or not, the patients were divided into DVT group (n=37) and non-DVT group (n=204). Data of patients in the two groups were collected and compared, including gender, age, duration of pressure ulcer, time in bed, and combination with diabetes, hypertension, coronary heart disease, cerebral infarction, pneumonia, sepsis/septic shock, and paraplegia, and the plasma D-dimer level and Caprini score within 24 h after admission. Data were statistically analyzed with independent sample t test, Mann-Whitney U test, chi-square test, and Fisher's exact probability test. The indicators with statistically significant differences between the two groups were analyzed with multivariate logistic regression analysis to screen the independent risk factors influencing the DVT of lower extremity in 241 patients with stage Ⅲ and Ⅳ pressure ulcers on admission. Results: The incidence of DVT of lower extremity was 15.4% (37/241), of which 86.5% (32/37) were asymptomatic DVT. Among the DVT of 46 lower limbs, only 29 involved the inferior genicular veins, accounting for 63.0%. There were no statistically significant differences in gender, duration of pressure ulcer, combination with diabetes, hypertension, coronary heart disease, cerebral infarction, pneumonia, and sepsis/septic shock of patients between the two groups (P>0.05), while there were statistically significant differences in age, time in bed, combination with paraplegia, the plasma D-dimer level and Caprini score of patients between the two groups(t=-3.19, Z=-2.04, χ2=4.44, Z=-3.89, t=-2.14, respectively, P<0.05 or P<0.01). Multivariate logistic regression analysis showed that age and plasma D-dimer level were independent risk factors influencing the DVT of lower extremity in 241 patients with stage Ⅲ and Ⅳ pressure ulcers on admission (with odds ratios of 1.03 and 1.18, respectively, with 95% confidence intervals of 1.00-1.06 and 1.05-1.33, respectively, P<0.05 or P<0.01). Conclusions: The patients with stage Ⅲ and Ⅳ pressure ulcers have a higher incidence of DVT on admission, with age and plasma D-dimer level being the independent risk factors for DVT of lower extremity. It is necessary to pay attention to the targeted screening of DVT and education of its prevention.

Temporal trends in vena cava filter implantation in public health system inpatients: an 11-year analysis of the largest city in Brazil / Tendência temporal do implante de filtro de veia cava em pacientes internados no SUS em São Paulo: análise de 11 anos da maior cidade do Brasil

Abstract Background Vena cava filter implantation is considered a simple procedure, which can lead to overuse and over-indication. It is nevertheless associated with short and long-term complications. Objectives The goals of this study were to evaluate rates of vena cava filter implantation conducted by Brazil's Unified Public Health System, analyzing in-hospital mortality and migration of patients from other cities seeking medical attention in São Paulo. Methods This study analyzed all vena cava filter procedures conducted from 2008 to 2018 in the city of São Paulo and registered on the public database using a big data system to conduct web scraping of publicly available databases. Results A total of 1324 vena cava filter implantations were analyzed. 60.5% of the patients were female; 61.7% were under 65 years old; 34.07% had registered addresses in other cities or states; and there was a 7.4% in-hospital mortality rate. Conclusions We observed an increase in the rates of use of vena cava filters up to 2010 and a decrease in rates from that year onwards, which coincides with the year that the Food and Drug Administration published a recommendation to better evaluate vena cava filter indications.

Resumo Contexto O implante de filtro de veia cava é considerado um procedimento de baixa complexidade, o que pode resultar em indicação excessiva. No entanto, não é isento de complicações a curto e longo prazo. Objetivos Avaliar as taxas de implantes de filtro de veia cava realizados pelo Sistema Único de Saúde e a origem geográfica e mortalidade intra-hospitalar dos pacientes. Métodos Foi conduzida uma análise em um banco de dados públicos referente às taxas de implantes de filtro de veia cava realizados de 2008 a 2018 na cidade de São Paulo, utilizando o sistema de big data. Resultados Foram analisados 1.324 implantes de filtro de veia cava financiados pelo Sistema Único de Saúde. Identificou-se tendência de aumento da taxa de implantação até 2010 e de redução dos números após esse período. Do total de pacientes, 60,5% eram do sexo feminino; 61,75% tinham menos de 65 anos; e 34,07% possuíam endereço oficial em outra cidade ou estado. A taxa de mortalidade intra-hospitalar foi de 7,4%. Conclusões Observamos aumento das taxas de implante de filtro de veia cava até 2010 e redução das taxas após esse período, o que coincide com o ano em que a organização norte-americana Food and Drug Administration publicou uma recomendação para melhor avaliar as indicações de filtros.

Incidence, diagnosis, treatment methods, and outcomes of clinically suspected venous thromboembolic disease in patients with COVID-19 in a quaternary hospital in Brazil / Incidência, diagnóstico, métodos terapêuticos e desfechos de eventos tromboembólicos venosos em pacientes com COVID-19 em um hospital quaternário do Brasil

Abstract Background Prothrombotic states have been associated with viral infections and the novel Sars-COV-2 infection has been associated with elevated D-dimer levels, although no causal relation has been clearly established. Objectives This study presents an epidemiological analysis of manifest VTE episodes in a group of patients hospitalized because of COVID-19. Methods Medical records of patients who presented symptomatic deep vein thrombosis and/or pulmonary embolism in concomitance with confirmed COVID-19 were retrospectively studied. Demographic characteristics, prevalence of VTE, site of occurrence, D-dimer variation over time, management, and outcomes were analyzed. Results During the study period, 484 confirmed cases of COVID-19 were admitted, 64 of which displayed VTE symptoms and 13 of which had confirmed symptomatic VTE(2.68% of total sample and 20.31% of symptomatic cases). Most cases (76.92%) occurred in intensive care. On the day attributed to VTE onset, D-dimer levels were over 3,000 ng/mL in 8 (80%) patients, a significant increase from baseline admission levels (p < 0.05). A significant decrease was also observed in D-dimer values at hospital discharge (p < 0.05). All patients received pharmacological thromboprophylaxis and/or anticoagulation as indicated. Two deaths occurred during the study, both patients with severe comorbidities. At the end of our study protocol, nine patients had been discharged and two remained hospitalized, but had no signs of VTE worsening. Conclusions VTE prevalence in hospitalized COVID-19 patients was 2.7%, and higher in intensive care units. Early institution of prophylaxis and immediate full anticoagulation when VTE is diagnosed should be the goals of those who treat this kind of patient.

Resumo Contexto Os estados pró-trombóticos têm sido associados a infecções virais. A nova infecção pela síndrome respiratória aguda grave do coronavírus 2 (SARS-CoV-2) sabidamente eleva os níveis de D-dímero, embora a relação causal não tenha sido bem estabelecida. Objetivos Este estudo apresenta uma análise epidemiológica de episódios sintomáticos de tromboembolismo em um grupo de pacientes hospitalizados pela doença do novo coronavírus (COVID-19). Métodos Foi realizada uma revisão retrospectiva de prontuários de pacientes internados por COVID-19 que apresentaram trombose venosa profunda e/ou embolia pulmonar sintomáticas. Foram avaliados os dados demográficos, a prevalência de tromboembolismo, a variação do D-dímero ao longo do tempo, o manejo e os desfechos. Resultados Dos 484 casos confirmados de COVID-19 admitidos entre março e julho de 2020, 64 apresentaram sintomas de tromboembolismo, que foram investigados, e 13 tiveram tromboembolismo confirmado (2,68% do total e 20,31% dos sintomáticos). A maioria dos casos ocorreu em regime de terapia intensiva (76,92%). Houve um aumento significativo no número de pacientes com D-dímero acima de 3.000 ng/mL no dia atribuído ao diagnóstico de tromboembolismo com relação aos níveis do momento da admissão (80%, p < 0,05).Uma queda significativa de pacientes nesse limiar também foi observada no momento da alta (p < 0,05). Todos os pacientes receberam tromboprofilaxia ou anticoagulação conforme indicado. Houve dois óbitos na amostra, ambos pacientes com comorbidades severas. Ao fim do protocolo, nove pacientes receberam alta e dois permaneceram hospitalizados, mas sem sinais de piora. Conclusões A prevalência de tromboembolismo em pacientes hospitalizados por COVID-19 foi de 2,7%, sendo mais frequente em regime de terapia intensiva. A instituição precoce de profilaxia e anticoagulação imediata ao diagnóstico é primordial nesse grupo de pacientes.

Características clinicoepidemiológicas de pacientes con trombosis venosa profunda en los miembros inferiores / Clinical and epidemiological characteristics of patients with deep venous thrombosis in lower limbs

Introducción: La trombosis venosa profunda consiste en la formación de un trombo en un trayecto de una vena profunda, lo que provoca la oclusión total o parcial de esta. Objetivo: Caracterizar una población de afectados por esta entidad clínica, según variables de interés. Métodos: Se efectuó un estudio observacional y descriptivo de serie de casos, de pacientes con presunto diagnóstico clínico de trombosis venosa de miembros inferiores, atendidos en el Servicio de Angiología y Cirugía Vascular del Hospital Provincial Clinicoquirúrgico Docente Saturnino Lora Torres de Santiago de Cuba desde enero de 2015 hasta junio de 2017, en quienes se realizó ecografía Doppler para confirmar la presencia de este episodio vascular. Resultados: La enfermedad primó en el grupo etario de 65 y más años (32,1 %) y en el sexo femenino (74,1 %). La inmovilidad de miembros inferiores constituyó el factor de riesgo predominante (27,0 %), en tanto el dolor, el edema y la taquicardia resultaron las manifestaciones clínicas más frecuentes (20,5 % en cada una), y el miembro inferior izquierdo fue el más afectado (69,0 %). Conclusiones: La trombosis venosa de los miembros inferiores se presentó como propia de las edades avanzadas de la vida, fundamentalmente en mujeres, con un cuadro clínico que indicaba claramente su existencia.

Introduction: The deep venous thrombosis consists on the formation of a clot in a deep vein way, what causes its total or partial occlusion. Objective: To characterize a population affected by this clinical entity, according to variables of interest. Methods: An observational and descriptive study of a serial cases, of patients with presumed clinical diagnosis of venous thrombosis of the lower limbs, assisted in the Angiology and Vascular Surgery Service of Saturnino Lora Torres Teaching Clinical Surgical Provincial Hospital was carried out in Santiago de Cuba from January, 2015 to June, 2017, to whom a Doppler echography to confirm the presence of this vascular episode was carried out. Results: The disease prevailed in the 65 and more age group (32.1 %) and in the female sex (74.1 %). The immobility of lower limbs constituted the predominant risk factor (27.0 %), as long as pain, edema and tachycardia were the most frequent clinical manifestations (20.5 % in each one), and the left lower limb was the most affected (69.0 %). Conclusions: The venous thrombosis of lower limbs was presented as characteristic of the advanced ages of life, mainly in women, with a clinical pattern that indicated with high clarity its existence.

Venous thromboembolism in childhood: where is Brazil after 20 years?

Abstract Due to the longer survival of critically ill children, venous thromboembolism is a problem which is becoming increasingly recognized in pediatric practice. In the last decades, several international studies have been published, shedding a light upon the epidemiology of this disease during childhood. These data show peculiarities in the clinical presentation and the significant morbidity and mortality. The new "epidemic of thrombosis" in pediatric hospitals points toward the urgent need for specific treatment and prevention protocols targeting this population. In Brazil, knowledge regarding this disease remains scarce. The lack of epidemiological data impacts both the clinical care and the design of specific public policies in the field. Thus, a national registry of pediatric venous thromboembolism is relevant to the proposal of an appropriate plan of action to create a qualified net of assistance. The improvement in educational initiatives related to the field of Pediatric Hemostasis is also very important. In this review, we have updated the epidemiological, clinical and therapeutic aspects of the disease, as well as the prevention strategies.

Determinación del riesgo de tromboembolismo pulmonar y trombosis venosa profunda en pacientes hospitalizados en un servicio de medicina interna / Determination of the risk of lung thromboembolism and deep venous thrombosis in patients hospitalized in an internal medicine service

Objetivo General: Determinar el riesgo de Tromboembolismo pulmonar (TEP) y Trombosis venosa profunda (TVP) en un grupo pacientes con patologías médicas. Métodos: Se realizó un estudio, unicéntrico, descriptivo, longitudinal, en pacientes > 18 años, ingresados por un periodo mayor de 72 horas en el servicio de medicina interna del Hospital Central del IVSS "Dr. Miguel Pérez Carreño", aplicando los modelos de evaluación de riesgos de Padua y Caprini. Resultados: La muestra estuvo representada por 114, el promedio de edad fue de 51 años ± 23, de mayoría femenino con 55 %, el principal diagnóstico de ingreso hospitalario, fue de origen infeccioso con 42,2 %. La escala Padua clasificó como bajo riesgo al 88,6 % y Caprini en alto riesgo al 36,8 %. El primer factor de riesgo fue la edad > 40 años con 82,46 %. El 3,51% de los pacientes presentaron un evento tromboembólico, teniendo positividad en el Dímero D con una media de 733,7 ± 181,3, al igual el eco-doppler venoso y en el caso de TEP, el angiotac pulmonar evidenció trombo de la rama derecha de la arteria pulmonar. Los dos factores de riesgo en este grupo estuvo dado por la edad (>65 años) y tasa de filtración glomerular <90 mL/min/1.73m2. El modelo de evaluación de riesgos de Padua presentó mayor capacidad predictiva (p < 0,05). Conclusión: La presencia de ETEV fue baja, a pesar que la muestra evaluada presentaba factores de riesgo y sin terapia trombo profiláctica, que evidencia la necesidad de evaluar los modelos de riesgos en pacientes con patologías médicas hospitalizados

General Objective: To determine the risk of pulmonary thromboembolism (PET) and deep vein thrombosis (DVT) in a group of patients with medical pathologies. Methods: A longitudinal, descriptive, single-center study was conducted in patients > 18 years, admitted for a period of more than 72 hours in the internal medicine service of the Central Hospital of the IVSS "Dr. Miguel Pérez Carreño", applying the Padua and Caprini risk assessment models. Results: The sample was represented by 114, the average age was 51 years ± 23, mostly female with 55 %, the main diagnosis of hospital admission, was of infectious origin with 42,2 %. The Padua scale classified 88,6 % as low risk and Caprini as high risk 36.8 %. The first risk factor was age > 40 years with 82,46 %. 3,51% of the patients presented a thromboembolic event, having a D-Dimer positivity with a mean of 733,7 ± 181,3, like venous echo-Doppler and, in the case of PET, pulmonary angiotac showed thrombus of the right branch of the pulmonary artery. The two risk factors for this group were given by age (> 65 years) and glomerular filtration rate <90 mL / min / 1.73m2. The Padua risk assessment model showed greater predictive capacity (p < 0.05). Conclusion: The presence of VTE was low, despite the fact that the sample evaluated presented risk factors and without thromboprophylactic therapy, which shows the need to evaluate the risk models in patients with hospitalized medical conditions

Filtros de vena cava para prevenir a tiempo / Vena cava filters for timely prevention

Introducción: Los filtros de vena cava son dispositivos metálicos diseñados especialmente para ser colocados en la vena cava inferior, ante el riesgo de tromboembolismo pulmonar por trombosis venosa profunda. Objetivo: Mostrar una actualización de las características de los filtros de vena cava y su colocación. Métodos: Revisión bibliográfica realizada entre 2010-2016 en las bases de datos: Medline, Cochrane Library, Lilacs, así como en el metabuscador Google. Se consultaron estudios de cohorte, prospectivos, retrospectivos, clínicos, epidemiológicos, metaanálisis, revisiones bibliográficas y ensayos clínicos. Resultados: se describieron y usaron por primera vez en 1967 en Estados Unidos de Norteamérica. Estos dispositivos se implementan por vía percutánea y producen una interrupción mecánica parcial del flujo sanguíneo de la vena cava inferior. Actualmente, existen filtros de tres tipos: permanentes, temporales y mixtos. El factor más importante de cualquier filtro es el grado de atrapamiento de los coágulos, grado de acceso a la vena cava y de oclusión, riesgo de embolización, grado de integridad mecánica y facilidad para su colocación. Las complicaciones de los filtros pueden ocurrir de modo inmediato o a largo plazo, con un promedio de 0,3 por ciento de complicaciones mayores y menos de 0,2 por ciento de los pacientes fallecen como resultado de la colocación del filtro. Conclusiones: A pesar de su efectividad demostrada, no existen publicaciones en Cuba que avalen su uso. Por su importancia y capacidad resolutiva se sugiere que esta técnica debe comenzarse a aplicar, de manera habitual, en los centros hospitalarios de atención secundaria y terciaria del país(AU)

Introduction: Vena cava filters are special metallic devices designed specially to be placed in the inferior cava vein in view of imminent risk of pulmonary tromboembolism by deep venous thrombosis. Objective: To update the state of vena cava filters and their placement. Methods: A bibliographic review was carried out in the years 2010 to 2016 in Medline, Cochrane Library and Lilacs data bases, as well as in Google search engine. There were consulted cohort, prospective, retrospective, clinical and epidemiological studies, meta-analysis, bibliographic reviews and clinical trials. Results: Vena cava filters were described and used for the first time in 1967 in the United States of America. The filters can be placed percutaneously and produce a partial mechanical disruption of the inferior cava vein flow. There are 3 kinds of filters in the market: permanent, temporal and mixed. The key factors of a filter are clot trapping capacity, access to the vena cava and occlusion capacity; also embolization, mechanical integrity grade, and placement feasibility. Complications by the filter may occur immediately or in a long term, with an average of 0, 3 percent in major complications, and less than 0,2 percent of mortality rate due to the placement of the filter. Conclusion: In spite of its proven benefits, there is not existence in Cuba of publications that guarantee its use. Because of its importance and resolvent capacity, it is suggested that this technique should start to be usually used in secondary and tertiary level hospitals in Cuba(AU)

Trombosis venosa profunda: Factores de riesgo y profilaxis / Deep vein thrombosis: Risk factors and prophylaxis

Antecedentes: La enfermedad tromboembólica venosa (ETV) es catalogada como la causa prevenible más frecuente de muerte hospitalaria y la tercer causa de morbilidad se ha calculado que en EEUU pueden existir 600,000 casos anuales. Metodología: Estudio descriptivo transversal con el objetivo de identificar pacientes con factores de riesgo para desarrollar ETV y no tienen profilaxis en servicios de medicina interna, ortopedia y cirugía del Hospital Roosevelt en agosto, 2016. Resultados: Se incluyeron 124 pacientes, 75/124 (60.4%) son de sexo masculino. El promedio de la edad fue de 44 años, rango de 14 ­ 87, 40/124 (32.2%) tenían indicación de reposo absoluto, 80/124 (64.5%) eran pacientes quirúrgicos, 16/124 (12.9%) tenían cáncer, 110/124 (88.7%) pacientes no recibieron profilaxis. Doce de 124 pacientes (9.6%) tenían al menos un factor de riesgo, 8/124 (6.4%) tenían 2 factores de riesgo, 16/124 (12.9%) tenían 3 factores de riesgo y 80/124 (64.5%) tenían 4 o más factores de riesgo. Conclusiones: Todos los pacientes encuestados poseen al menos un factor de riesgo para ETV, de los cuales 88.7% no recibe profilaxis...(AU)

Background: Venous thromboembolic disease (VTE) is listed as the most frequent preventable cause of hospital death and the third cause of morbidity has been estimated that in the US there may be 600,000 cases per year. Methodology: Cross-sectional descriptive study with the objective of identifying patients with risk factors to develop VTE and have no prophylaxis in services of internal medicine, orthopedics and surgery of the Roosevelt Hospital in August, 2016. Results: 124 patients were included, 75/124 ( 60.4%) are male. The average age was 44 years, range of 14 - 87, 40/124 (32.2%) had absolute rest indication, 80/124 (64.5%) were surgical patients, 16/124 (12.9%) had cancer, 110/124 (88.7%) patients did not receive prophylaxis . Twelve of 124 patients (9.6%) had at least one risk factor, 8/124 (6.4%) had 2 risk factors, 16/124 (12.9%) had 3 risk factors and 80/124 (64.5%) had 4 or more risk factors. Conclusions: All the patients surveyed have at least one risk factor for VTE, of which 88.7% do not receive prophylaxis ... (AU)

Les thromboses veineuses des membres : aspects épidémiologiques, diagnostiques, thérapeutiques et évolutifs : étude rétrospective sur une période de 09 ans à propos de 148 cas colliges au service de cardiologie de l'hôpital général de grand Yoff de Dakar

INTRODUCTION:Les thromboses veineuses (TV) constituent une pathologie fréquente et potentiellement grave. Les facteurs de risques ou étiologiques sont multiples. Malgré les nombreuses recommandations internationales sur la prophylaxie, les incidences hospitalières de cette pathologie restent toujours élevées. METHODOLOGIE:Nous avions mené une étude rétrospective et descriptive au service de cardiologie de l'hôpital général de Grand Yoff de Dakar entre janvier 2006 et décembre 2014 soit une période de 9 ans. Tous les dossiers de malades hospitalisés pour thrombose veineuse (TV) confirmée à l'imagerie ont été recensés. Les paramètres étudiés étaient les données épidémiologiques, diagnostiques, thérapeutiques et évolutives. Les données ont été analysées avec le logiciel EPI INFO 6.0. Le seuil de significativité était retenu pour une valeur de p<0,05.RESULTATS:Nous avions colligés 148 cas de thromboses veineuses. La prévalence était de 2,78%. Le sex ratio H/F était de 0,51. L'âge moyen était de 51 ans ± 19,22. La symptomatologie était dominée par le tableau de grosse jambe inflammatoire gauche dans 89 cas (60 %). L'écho-Doppler veineuse objectivait une prédominance des TV au niveau du réseau veineux profond dans 123 cas (83,7%). Les facteurs de risque retrouvés étaient dominés outre l'âge supérieur ou égal à 60 ans (38,5%), la prise de pilules oestro-progestatives (13%) et le tabagisme (9,5%). Les patients avaient bénéficié d'un traitement à base d'héparine de bas poids moléculaire associé dès le 1er jour à un antivitamine K (acénocoumarol) (98%). L'évolution était favorable chez 121 patients (82,4%). La mortalité globale était de 2,7% soit 4 patients.CONCLUSION:Les thromboses veineuses deviennent relativement fréquentes dans nos hôpitaux. Dans notre étude, elle était plus fréquente chez les femmes et les sujets jeunes et plus souvent liée aux facteurs médicaux

Trombosis en el recién nacido / Thrombosis in newborn infants

La probabilidad de padecer trombosis es mucho mayor en el período neonatal que en cualquier otra etapa pediátrica. La labilidad del particular sistema hemostático del neonato, sumada a los múltiples factores de riesgo a que está expuesto y la presencia casi constante de catéteres, son responsables de este hecho. Las trombosis venosas son más frecuentes que las arteriales y ocurren principalmente en los miembros, la aurícula derecha y las venas renales. El accidente cerebrovascular puede ser causado por la oclusión del flujo arterial que llega al cerebro o del sistema de drenaje venoso de este. La púrpura fulminans es una patología de altísima gravedad, que debe ser considerada una emergencia médica y se debe a la deficiencia grave de proteína C o, menos frecuentemente, de proteína S o antitrombina. La mayoría de los episodios trombóticos tienen indicación de tratamiento anticoagulante, que se puede realizar con heparina no fraccionada y/o con heparina de bajo peso molecular. La púrpura fulminans requiere terapia de sustitución con proteína C y/o plasma fresco. El tratamiento trombolítico se realiza con activador tisular del plasminógeno y debe quedar reservado solo para aquellas trombosis cuya localización implique compromiso de vida o pérdida de un órgano o de un miembro.

The incidence of thrombosis is higher among newborn infants than in any other stage of pediatric development. This fact is the consequence of labile characteristics of the neonatal hemostatic system, in addition to exposure to multiple risk factors and the wide use of vascular catheters. Venous thromboses, which mainly affect the limbs, the right atrium and renal veins, are more frequently seen than arterial thromboses. A stroke may be caused by the occlusion of the arterial flow entering the brain or by occlusion of its venous drainage system. Purpura fulminans is a very severe condition that should be treated as a medical emergency, and is secondary to severe protein C deficiency or, less frequently, protein S or antithrombin deficiency. Most thrombotic events should be managed with antithrombotic therapy, which is done with unfractionated and/or low molecular weight heparins. Purpura fulminans requires protein C replacement and/or fresh frozen plasma infusion. Thrombolytic therapy is done using tissue plasminogen activator and should only be used for life-, or limb-, or organ-threatening thrombosis.

Deep Vein Thrombosis in the Lower Extremities in Comatose Elderly Patients with Acute Neurological Diseases

PURPOSE: Comatose elderly patients with acute neurological illness have a great risk of deep vein thrombosis (DVT). In this study, the incidence of DVT and the effectiveness of early initiation of treatment were evaluated in those patients. MATERIALS AND METHODS: Total 323 patients were admitted to our ward due to neurological diseases in one year, and 43 patients, whose Glasgow Coma Scale was or =60 years, were included in this study. D-dimer was measured on admission and day 7, and lower-extremity ultrasonography was performed on day 7. When DVT was positive, heparin treatment was initiated, and further evaluation of pulmonary embolism (PE) was conducted. Vena cava filter protection was inserted in PE-positive patients. Incidence of DVT and PE, alteration of D-dimer value, and effect of heparin treatment were analyzed. RESULTS: DVT was positive in 19 (44.2%) patients, and PE was in 4 (9.3%). D-dimer was significantly higher in DVT-positive group on day 7 (p<0.01). No DVT were identified in patients with ischemic disease, while 66.7% of intracerebral hemorrhage and 53.3% of brain contusion patients were DVT positive. Surgery was a definite risk factor for DVT, with an odds ratio of 5.25. DVT and PE disappeared by treatment in all cases, and no patients were succumbed to the thrombosis. CONCLUSION: Patients with hemorrhagic diseases or who undergo operation possess high risk of DVT, and initiation of heparin treatment in 7 days after admission is an effective prophylaxis for DVT in comatose elderly patients without causing bleeding.

Incidence of deep venous thrombosis and stratification of risk groups in a university hospital vascular surgery unit / Incidência de trombose venosa profunda e estratificação dos grupos de risco em serviço de cirurgia vascular de hospital universitário

BACKGROUND: There is a knowledge gap with relation to the true incidence of deep vein thrombosis among patients undergoing vascular surgery procedures in Brazil. This study is designed to support the implementation of a surveillance system to control the quality of venous thromboembolism prophylaxis in our country. Investigations in specific institutions have determined the true incidence of deep vein thrombosis and identified risk groups, to enable measures to be taken to ensure adequate prophylaxis and treatment to prevent the condition.OBJECTIVE: To study the incidence of deep venous thrombosis in patients admitted to hospital for non-venous vascular surgery procedures and stratify them into risk groups.METHOD: This was a cross-sectional observational study that evaluated 202 patients from a university hospital vascular surgery clinic between March 2011 and July 2012. The incidence of deep venous thrombosis was determined using vascular ultrasound examinations and the Caprini scale.RESULTS: The mean incidence of deep venous thrombosis in vascular surgery patients was 8.5%. The frequency distribution of patients by venous thromboembolism risk groups was as follows: 8.4% were considered low risk, 17.3% moderate risk, 29.7% high risk and 44.6% were classified as very high risk.CONCLUSION: The incidence of deep venous thrombosis in vascular surgery patients was 8.5%, which is similar to figures reported in the international literature. Most vascular surgery patients were stratified into the high and very high risk for deep venous thrombosis groups.

CONTEXTO: Há lacuna de conhecimento sobre a real incidência de trombose venosa profunda nos pacientes submetidos a procedimentos cirúrgicos vasculares no Brasil. A atual pesquisa pretende corroborar a implementação de um sistema de vigilância e controle sobre a qualidade de profilaxia de tromboembolismo venoso em nosso meio. As investigações, em cada instituição, permitiriam revelar a incidência de trombose venosa profunda e a identificação dos grupos de risco, a fim de assumir medidas para obter profilaxia e terapêutica adequadas contra essa afecção.OBJETIVO: Estudar a incidência de trombose venosa profunda e estratificar os grupos de risco em pacientes internados, submetidos a procedimentos cirúrgicos vasculares não venosos.MÉTODO: Estudo observacional transversal, que avaliou 202 pacientes da Clínica de Cirurgia Vascular de um hospital universitário, entre março de 2011 e julho de 2012. A incidência de trombose venosa profunda foi determinada por meio de exame ultrassonográfico vascular, realizado em todos os pacientes. Os fatores de riscos de cada paciente foram estratificados de acordo com a escala Caprini.RESULTADOS: A média de incidência de trombose venosa profunda na Cirurgia Vascular foi de 8,5%. Em relação aos grupos de risco para tromboembolismo venoso, 8,4% foram considerados de baixo risco, 17,3% de moderado risco, 29,7% de alto risco e 44,6% de altíssimo risco.CONCLUSÃO: A incidência de trombose venosa profunda na Cirurgia Vascular foi de 8,5%, semelhante à registrada na literatura internacional. A maior parte dos pacientes cirúrgicos vasculares é estratificada em alto e altíssimo risco para trombose venosa profunda.

BISAP-O y APACHE-O: utilidad en la predicción de severidad en la pancreatitis aguda según la clasificación modificada de Atlanta / BISAP-O y APACHE-O: utility in predicting severity in acute pancreatitis in modified Atlanta classification

Objetivo: Valorar los puntajes BISAP y APACHE II en predecir severidad según la clasificación Atlanta 2012 y determinar si el factor obesidad añadido a dichos puntajes mejora su predicción. Material y métodos: Se realizó un estudio prospectivo entre enero de 2013 y abril de 2014 de todos los pacientes con pancreatitis aguda según la nueva clasificación Atlanta 2012. Se confeccionó curvas ROC para los puntajes BISAP, BISAP-O, APACHE-II y APACHE-O y se seleccionó puntos de corte apropiados con los que se calculó la sensibilidad, especificidad, VPP, VPN, RPP y la RPN. Resultados: Se estudió a 334 pacientes. El 65,27% presentó sobrepeso u obesidad. La etiología fue biliar en el 86,53%. Sólo 8,38% presentó pancreatitis severa y 1,5% falleció. Las áreas bajo la curva ROC y puntos de corte seleccionados fueron: BISAP: 0,8725, 2; BISAP-O: 0,8246, 3; APACHE-II: 0,8547, 5; APACHE-O: 0,8531, 6. Con dichos puntos de corte la sensibilidad, especificidad, VPP, VPN, RPP y la RPN fueron: BISAP: 60,71%, 91,83%, 40,48%, 96,23%, 7,43, 0,43; BISAP-O: 60,71%, 86,93%, 29,82%, 96,03%, 4,76, 0,45; APACHE-II: 85,71%, 76,14%, 24,74%, 98,31%, 3,6, 0,19; APACHE-O: 82,14%, 79,41%, 26,74%, 97,98%, 4, 0,22. Conclusiones: Los sistemas BISAP, BISAP-O, APACHE-II, y APACHE-O pueden usarse para identificar a los pacientes con bajo riesgo de severidad en razón de su alto VPN, sin embargo su uso debe ser prudente considerando que la RPP y RPN no alcanza niveles óptimos, indicando que su valor en la predicción de severidad es limitado. Por otro lado el añadir el factor obesidad no mejoró su capacidad predictiva.

Objective: To assess the BISAP and APACHE II scores in predicting severity according to the 2012 Atlanta classification and whether the obesity factor added to these scores improves prediction. Material and methods: A prospective study between January 2013 and April 2014 including all patients with acute pancreatitis was performed according to the new Atlanta 2012 classification. ROC curves were fabricated for BISAP, BISAP-O, APACHE-II scores and Apache O and appropriate cutoffs were selected to the sensitivity, specificity, PPV, NPV, RPP and RPN. Results: We studied 334 patients. 65.27% were overweighted or obese. The biliar etiology was 86.53%. Only 8.38% had severe pancreatitis and 1.5% died. Areas under the ROC curve and cut points selected were: BISAP: 0.8725, 2; BISAP-O: 0.8246, 3; APACHE-II: 0.8547, 5; APACHE-O: 0.8531, 6. Using these cutoffs the sensitivity, specificity, PPV, NPV, RPP and RPN were BISAP: 60.71%, 91.83%, 40.48%, 96.23 %, 7.43, 0.43; BISAP-O: 60.71%, 86.93%, 29.82%, 96.03%, 4.76, 0.45; APACHE-II: 85.71%, 76.14%, 24.74%, 98.31%, 3.6, 0.19; APACHE-O: 82.14%, 79.41%, 26.74%, 97.98%, 4, 0.22. Conclusions: BISAP, BISAP-O, APACHE-II and APACHE-O systems can be used to identify patients at low risk of severity because of its high NPV, however their use should be cautious considering that the RPP and RPN do not reach optimal levels indicating that their value in predicting severity is limited. On the other hand adding the obesity factor did not improve their predictive ability.

Incidence of Deep Vein Thrombosis after Major Lower Limb Orthopedic Surgery: Analysis of a Nationwide Claim Registry

PURPOSE: We aimed to evaluate the nationwide incidence and risk factors for symptomatic deep vein thrombosis (DVT) after major lower limb orthopedic surgeries. MATERIALS AND METHODS: The Korean Health Insurance Review and Assessment Service database was used to retrospectively identify International Classification of Disease-10 codes for DVT and operation codes representing hip arthroplasty, knee arthroplasty, and hip fracture surgeries. The age- and gender-adjusted annual incidence of DVT, rates of major lower limb orthopedic surgeries, and the postoperative incidence of DVT according to the surgical procedure were assessed. RESULTS: The age- and gender-adjusted annual incidence of DVT was 70.67 per 100000 persons/year. Compared to patients aged 70 years (p<0.001). Females showed a greater relative risk for DVT than males (1.08; p<0.001). The incidence of postoperative DVT, according to the type of surgery, was significantly greater for knee replacement arthroplasty than for other forms of surgery (p<0.002). The relative risk of postoperative DVT was higher in females in knee replacement arthroplasty (1.47) and hip fracture surgery (2.25) groups, although relatively lower in those who underwent hip replacement arthroplasty (0.97). CONCLUSION: Among major lower limb surgeries, advanced age, female gender, and undergoing a knee replacement arthroplasty were found to be risk factors for developing postoperative DVT. These findings further emphasize the need for orthopedic surgeons to consider the development of DVT after surgery in high-risk patients.

Incidência de Trombose Venosa Profunda e fatores associados em mulheres diagnosticadas com câncer de mama no Instituto Nacional de Câncer (INCA) no período 2007-2012 / Incidence of deep vein thrombosis and associated factors in women diagnosed with breast cancer at the National Cancer Institute (INCA) in 2007-2012

O câncer de mama é a localização tumoral mais frequente entre as mulheres no mundo. O rastreamento populacional pela mamografia tem o objetivo de detectar o câncer de mama em um estágio inicial, possibilitando a redução das complicações do tratamento. Progressos foram realizados com o estabelecimento de regimes quimioterápicos mais efetivos em reduzir o tamanho tumoral, assim como a introdução da terapia hormonal, com o tamoxifeno, para reduzir o risco de recorrência da doença. Entretanto, essas terapias contra o câncer podem estar ligadas ao risco de desenvolver trombose, assim como o local da malignidade e a extensão da doença. De todos os eventos de tromboembolismo venoso (TEV) que ocorrem na população, 18 a 29por cento podem estar associados ao câncer e a trombose venosa é considerada a segunda principal causa de óbito nos pacientes oncológicos. Objetivo: Avaliar a incidência e fatores de risco com a ocorrência de trombose venosa profunda (TVP) na coorte de mulheres diagnosticadas com câncer de mama no Hospital do Câncer III do Instituto Nacional de Câncer (INCA) no período 2007-2012. Métodos: Estudo observacional retrospectivo em uma coorte hospitalar de 8.140 mulheres diagnosticadas com câncer de mama e um outro estudo caso controle dentro desta coorte. A coleta de dados foi realizada por meio do Registro hospitalar do Hospital do Câncer III do Instituto Nacional de Câncer (INCA), por prontuários médicos e eletrônicos. Dentre as informações avaliadas, constaram as características sociodemográficas, tratamentos submetidos, internações e realização de tromboprofilaxia. A TVP foi definida por meio do diagnóstico por imagem, pelo exame de Ultrassom Doppler. Foram realizadas estatísticas descritivas e avaliação da associação entre as exposições e a ocorrência de TVP no estudo analítico...

Breast cancer is the most frequent cancer site among women worldwide. The population screening by mammography aims to detect breast cancer at an early stage, enabling the reduction of complications of treatment. Progress has been made with the establishment of more effective chemotherapy regimens in reducing tumor size as well as the introduction of hormonal therapy with tamoxifen to reduce the risk of disease recurrence. However, these therapies against cancer may be linked to the risk of thrombosis, as well as the location and extent of malignancy of the disease. Of all VTE events that occur in the population, 18-29% may be associated with cancer and venous thrombosis is considered the second leading cause of death in cancer patients. Objective: To evaluate the incidence and factors associated with the occurrence of deep vein thrombosis (DVT) in the cohort of women diagnosed with breast cancer at the Cancer Hospital III of the National Cancer Institute (INCA) in 2007-2012. Methods: A retrospective observational study in a hospital cohort of 8,140 women diagnosed with breast cancer and case-control study within this cohort. The data collections were performed by hospital registry Cancer Hospital III of the National Cancer Institute (INCA), and electronic and medical records. Among the information evaluated consisted socio-demographic characteristics, undergoing treatments, admissions and conducting thromboprophylaxi. Deep venous thrombosis was defined by diagnostic imaging for examining Ultrasound Dopller. Descriptive statistics were performed and also evaluation of the association between exposures and the occurrence of DVT in the analytical study...

Incidence of deep vein thrombosis and quality of venous thromboembolism prophylaxis / Incidência de trombose venosa profunda e qualidade da profilaxia para tromboembolismo venoso

OBJECTIVE: to determine the incidence of deep vein thrombosis and prophylaxis quality in hospitalized patients undergoing vascular and orthopedic surgical procedures. METHODS: we evaluated 296 patients, whose incidence of deep venous thrombosis was studied by vascular ultrasonography. Risk factors for venous thrombosis were stratified according the Caprini model. To assess the quality of prophylaxis we compared the adopted measures with the prophylaxis guidelines of the American College of Chest Physicians. RESULTS: the overall incidence of deep venous thrombosis was 7.5%. As for the risk groups, 10.8% were considered low risk, 14.9%moderate risk, 24.3% high risk and 50.5% very high risk. Prophylaxis of deep venous thrombosis was correct in 57.7%. In groups of high and very high risk, adequate prophylaxis rates were 72.2% and 71.6%, respectively. Excessive use of chemoprophylaxis was seen in 68.7% and 61.4% in the low and moderate-risk groups, respectively. CONCLUSION: although most patients are deemed to be at high and very high risk for deep vein thrombosis, deficiency in the application of prophylaxis persists in medical practice. .

OBJETIVO: determinar incidência de trombose venosa profunda e qualidade de profilaxia em pacientes internados submetidos a procedimentos cirúrgicos vasculares e ortopédicos. MÉTODOS: avaliou-se 296 pacientes, cuja incidência de trombose venosa profunda foi estudada por meio de ultrassonografia vascular. Os fatores de risco para trombose venosa foram estratificados conforme modelo de Caprini. Para avaliação da qualidade de profilaxia comparou-se as medidas adotadas com as diretrizes de profilaxia do American College of Chest Physicians. RESULTADOS: a incidência global de trombose venosa profunda foi 7,5%. Quanto aos grupos de riscos, 10,8% foram considerados de baixo risco, 14,9% moderado risco, 24,3% alto risco e 50,5% altíssimo risco. A profilaxia para trombose venosa profunda foi correta em 57,7%. Nos grupos de alto e altíssimo risco, as taxas de profilaxia adequada foram de 72,2% e 71,6%, respectivamente. O uso excessivo de profilaxia medicamentosa foi evidenciado em 68,7% e 61,4% nos grupos de baixo e moderado risco, respectivamente. CONCLUSÃO: Embora a maior parte dos pacientes seja considerada de alto e altíssimo risco para trombose venosa profunda, na prática médica persiste a deficiência na aplicação desta profilaxia. .

Epidemiological African Day for Evaluation of Patients at Risk of Venous Thrombosis in Acute Hospital Care Settings : Cardiovascular Topic

Introduction : This study aimed to identify patients at risk for venous thromboembolism (VTE) among all patients hospitalised; and to determine the proportion of at-risk hospital patients who received effective types of VTE prophylaxis in sub-Saharan Africa (SSA). Methods: A multinational; observational; cross-sectional survey was carried out on 1 583 at-risk patients throughout five SSA countries. Results: The prevalence of VTE risk was 50.4 overall; 62.3 in medical and 43.8 in surgical patients. The proportion of at-risk patients receiving prophylaxis was 51.5 overall; 36.2 in medical and 64 in surgical patients. Low-molecular weight heparin was the most frequently used prophylactic method in 40.2 overall; 23.1 in medical and 49.9 in surgical patients. Discussion: This study showed a high prevalence of VTE risk among hospitalised patients and that less than half of all at-risk patients received an American College of Clinical Pharmacy-recommended method of prophylaxis. Conclusion: Recommended VTE prophylaxis is underused in SSA

Recanalization after acute deep vein thrombosis / Recanalizacao apos trombose venosa profunda aguda

The process of recanalization of the veins of the lower limbs after an episode of acute deep venous thrombosis is part of the natural evolution of the remodeling of the venous thrombus in patients on anticoagulation with heparin and vitamin K inhibitors. This remodeling involves the complex process of adhesion of thrombus to the wall of the vein, the inflammatory response of the vessel wall leading to organization and subsequent contraction of the thrombus, neovascularization and spontaneous lysis of areas within the thrombus. The occurrence of spontaneous arterial flow in recanalized thrombosed veins has been described as secondary to neovascularization and is characterized by the development of flow patterns characteristic of arteriovenous fistulae that can be identified by color duplex scanning. In this review, we discuss some controversial aspects of the natural history of deep vein thrombosis to provide a better understanding of its course and its impact on venous disease.

O processo de recanalização das veias dos membros inferiores, após um episódio de trombose venosa profunda aguda em pacientes anticoagulados com heparina e inibidores da vitamina K, faz parte da evolução natural da remodelagem do trombo venoso. Esse complexo processo de remodelagem envolve a adesão do trombo à parede da veia, à resposta inflamatória da parede do vaso, levando à organização e subsequente contração do trombo, à neovascularização e à lise espontânea de áreas no interior do trombo. A presença de fluxo arterial espontâneo em veias com trombose recanalizada tem sido descrita como secundária à neovascularização e se caracteriza pelo desenvolvimento de fluxo com padrão de fístulas arteriovenosas, identificadas por meio de mapeamento dúplex colorido. Nesta revisão, são discutidos alguns aspectos controversos da história natural da trombose venosa profunda, para uma melhor compreensão da sua evolução e do seu impacto sobre a doença venosa.