Atmospheric black carbon observations and its valley-mountain dynamics: Eastern Cordillera of the Central Andes of Peru.

Glacial bodies in the Peruvian Andes Mountains store and supply freshwater to hundreds of thousands of people in central Peru. Atmospheric black carbon (BC) is known to accelerate melting of snow and ice, in addition to contributing to air pollution and the health of people. Currently there is limited understanding on the sources and temporal variability of BC in valley and mountain environments in Peru. To address this problem, this study combined surface observations of BC collected during 2022-2023 with WRF model simulations and HYSPLIT trajectories to analyze the dispersion and sources of BC in valley and high elevation environments and the associated local atmospheric circulations. Results show high BC concentrations are associated with the valley-mountain wind system that occurs on both sides of the Huaytapallana mountain range. A pronounced circulation occurs on the western slopes of Huaytapallana when concentrations of BC increase during daylight hours, which transports atmospheric pollutants from cities in the Mantaro River Valley to the Huaytapallana mountain range. Low concentrations of BC are associated with circulations from the east that are channeled by the pronounced ravines of the Andes-Amazon transition. On average, during the season of highest BC concentrations (July-November), the relative contributions of fossil fuels are dominant to biomass burning at the valley observatory and are slightly lower at the Huaytapallana observatory. These results demonstrate the need to promote mitigation actions to reduce emissions of BC and air pollution associated with forest fires and local anthropogenic activity.

Impact of Hospital-based Multidisciplinary Anticoagulation Stewardship Programs.

Antithrombotic therapies, especially anticoagulants, are high-risk medications with increased potential for adverse events. The development and implementation of a well-functioning, designated, multidisciplinary anticoagulation stewardship program (MASP), tailored to each hospital-center's needs, has the primary objectives of improving patient-centered outcomes, minimizing undesirable anticoagulation-related adverse events and minimizing hospital length of stay (LOS) and other patient-related costs. Such stewardship programs are pivotal in supporting busy clinicians with consultation on challenging clinical case scenarios, ensuring appropriate use of valuable healthcare resources, achieving compliance with anticoagulant-associated accreditation standards, and positively impacting patient-specific morbidity/mortality outcomes. Herein, we review and discuss the critical need for antithrombosis stewardship and the benefit of formalized MASP in optimizing use of antithrombotic therapies.

Impacto del decúbito prono en el síndrome de insuficiencia respiratoria aguda en pacientes con COVID-19 bajo ventilación mecánica invasiva / Impact of prone position on acute respiratory distress syndrome in patients with COVID-19 under invasive mechanical ventilation / Impacto de la posição prona na síndrome da insuficiência respiratória aguda em pacientes com COVID-19 sob ventilação mecânica invasiva

Resumen: A finales del año 2019 surgió una nueva especie de coronavirus con la capacidad de producir enfermedad en humanos, conocida como SARS-CoV-2 y definiéndose la enfermedad como COVID-19. A partir de marzo del 2020 se comenzaron a presentar casos de neumonía por SARS-CoV-2 en el Hospital Español de México, algunos de estos pacientes desarrollaron la enfermedad grave requiriendo ventilación mecánica invasiva. Se realizó el estudio de una serie de casos, de tipo descriptivo, transversal, retrolectivo y analítico, desde mayo de 2020 hasta agosto de 2020, en pacientes ingresados en el área de terapia intensiva COVID en dicho hospital. Se obtuvo una muestra de 42 pacientes, 32 (76%) hombres y 10 (24%) mujeres, con neumonía severa por SARS-CoV-2 e hipoxemia refractaria con un cuadro de síndrome de insuficiencia respiratoria aguda (SIRA) moderado (PaO2/FiO2 < 200) a severo (PaO2/FiO2 < 100), los cuales necesitaron ventilación mecánica invasiva y por hipoxemia refractaria al menos un evento de decúbito prono. La duración mínima de cada episodio de prono fue al menos de 24 horas, teniendo como mínimo un evento de decúbito prono y como máximo siete eventos, con un promedio global de 2.7 eventos de decúbito prono. El tiempo máximo prono por evento fue de 36 horas continuas, teniendo un promedio de 30.1 horas en decúbito prono. Se logró establecer que los pacientes en decúbito prono presentaron una mejoría respecto al índice de oxigenación (PaO2/FiO2) con una p < 0.01, a diferencia de otros indicadores de oxigenación tales como PaO2 y PaCO2, donde no se encontró suficiente evidencia respecto a ser predictor sobre mortalidad y gravedad.

Abstract: At the end of 2019, a new species of coronavirus identified as SARS-CoV-2 emerged, with the ability to cause disease in humans, defined as COVID-19. As of March 2020, cases of SARS-CoV-2 pneumonia began to appear at the Hospital Español de México, some of these patients developed severe disease requiring invasive mechanical ventilation. A descriptive, cross-sectional, retrolective and analytical study of cases was conducted from May to August 2020, in patients admitted to the COVID intensive care area at said hospital. A sample of 42 patients was obtained, 32 (76%) men and 10 (24%) women, with severe pneumonia due to SARS-CoV-2 and refractory hypoxemia with a picture of acute respiratory insufficiency syndrome (SIRA) from moderate (PaO2/FiO2 < 200) to severe (PaO2/FiO2 < 100), which required invasive mechanical ventilation and for refractory hypoxemia at least one event in the prone position. The minimum duration of each prone episode was at least 24 hours, with a minimum of one decubitus and prone events and a maximum of seven events, with a global average of 2.7 prone events. The maximum prone time per event was 36 continuous hours, with an average of 30.1 hours in the prone position. It was possible to establish that patients in the prone position presented an improvement regarding the oxygenation index (PaO2/FiO2) with a p < 0.01, unlike other characteristics such as PaO2 and PaCO2, where not enough evidence was found with regard to being a predictor of mortality and gravity.

Resumo: No final de 2019, surgiu uma nova espécie de Coronavírus com capacidade de causar doença em humanos, identificando-se como COVID-19 e definindo a doença como SARS-CoV-2. Em março de 2020, casos de pneumonia por SARS-CoV-2 começaram a aparecer no Hospital Español de México, alguns desses pacientes desenvolveram doença grave que requereram ventilação mecânica invasiva. Uma série de casos descritivos, transversais, retroletivos e analíticos foi realizada de maio de 2020 a agosto de 2020 em pacientes internados na área de terapia intensiva COVID do Hospital Español de México. Uma amostra de 42 pacientes, 32 (76%) homens e 10 (24%) mulheres, com pneumonia grave por SARS-CoV-2 e hipoxemia refratária com síndrome de insuficiência respiratória aguda (SIRA) moderada (PaO2/FiO2 < 200) a grave (PaO2/FiO2 < 100), que exigiu ventilação mecânica invasiva e devido à hipoxemia refratária pelo menos um evento em decúbito prono. A duração mínima de cada episódio na posição prona foi menor a 24 horas, tendo como mínimo de 1 evento decúbito e prona e como máximo de 7 eventos, com uma média global de 2.7 eventos em decúbito prona. O tempo máximo em prona por evento foi de 36 horas contínuas, com média de 30.1 horas na posição prona. Foi possível estabelecer que os pacientes em decúbito prona apresentaram melhora em relação ao índice de oxigenação (PaO2/FiO2) com p < 0.01, ao contrário de outros indicadores de oxigenação como PaO2 e PaCO2, não foram encontradas evidências suficientes de ser um preditor de mortalidade e gravidade.

Ultrasonografía del musculoesquelético como valoración nutricional en el paciente crítico / Skeletal muscle ultrasound as a nutritional assessment in the critically ill patient / Ultra-som muscúlo esquelético como valoração nutricional no paciente crítico

Resumen: Introducción: El paciente crítico se caracteriza por una respuesta catabólica aumentada de origen multifactorial, la cual incrementa la pérdida muscular. El ultrasonido a la cabecera del paciente es una herramienta útil para medir el desgaste muscular, evaluar y dar seguimiento nutricional. Material y métodos: Estudio prospectivo y descriptivo con una intervención diagnóstica de bajo riesgo. Se realizaron mediciones del grosor del músculo cuádriceps de una muestra de 20 pacientes consecutivos, se dividieron dos grupos, el grupo 1 con 11 pacientes que tuvieron desgaste muscular representado en porcentaje y en el grupo 2 nueve pacientes sin desgaste muscular. Resultados: En el análisis univariado sólo se observó diferencia entre ambos grupos en el día en que se lograron las metas de nutrición, fue tardío en el grupo de pacientes con desgaste muscular (5 [5-5.5, IC 95%] y 3 [2.5-5, IC 95%] con p = 0.02). En el análisis multivariado se corrobora la misma asociación, pero sin significancia estadística (RM 10.8 [0.93-125-68, IC 95%]). En el análisis de correlación se encontró una relación inversa entre el puntaje de SOFA y el porcentaje de desgaste muscular (r = -0.48 y r2 = 0.23). Conclusiones: El estudio reveló una posible asociación entre la presencia de desgaste muscular en el paciente crítico y el retraso en alcanzar las metas de nutrición. Y una relación inversa entre el valor del puntaje de SOFA y el porcentaje de pérdida muscular.

Abstract: Introduction: The critically ill patient is characterized by an increases catabolic response whith multifactorial origin, which increases muscle loss. Ultrasound at the bedside is a useful tool for measuring muscle wasting, and assess nutritional goals. Material and methods: A prospective study with a low risk diagnostic intervention. We measure the thickness of the quadriceps muscle of a sample of 20 consecutive patients. Two groups were divided, in group 1 with 11 patients who had muscle wasting represented in percentage and group 2 with 9 patients without muscle wasting. Results: In univariate analysis only difference was found between the two groups on the day they were achieved nutrition goals, and was late for the group of patients with muscle wasting (5 [5-5.5; 95%] and 3 [2.5-5, 95% CI] p = 0.02). In multivariate analysis corroborates the same association, but without statistical significance (RM 10.8 [0.93-125-68, 95% CI]). For the correlation analysis an inverse relationship between SOFA score and the percentage of muscle wasting (r = -0.48 and r2 = 0.23) was found. Conclusions: In the study a possible association was met between the presence of muscle wasting in critically ill patients and delay in achieving nutrition goals. And inverse relationship between the value of SOFA score and the percentage of muscle loss.

Resumo: Introdução: O paciente crítico se caracteriza por um aumento da resposta catabólica multifatorial, o que aumenta a perda de massa muscular. O ultra-som à beira do leito é uma ferramenta útil para medir a perda de massa muscular, avaliar e dar monitoramento nutricional. Material e métodos: Estudo prospectivo descritivo com uma intervenção diagnóstica de baixo risco. Realizaram-se medições da espessura do músculo quadríceps de uma amostra de 20 pacientes consecutivos, foram divididos em dois grupos, grupo 1 com 11 pacientes que tiveram perda de massa muscular representada em porcentagem e no grupo 2 com 9 pacientes sem perda de massa muscular. Resultados: A análise univariada só encontrou diferença entre os dois grupos no dia em que foram alcançadas as metas nutricionais, foi tardío para o grupo de pacientes com perda de massa muscular (5 [5-5.5, IC 95%] e 3 [2.5-5, IC 95%] com p = 0.02). A análise multivariada comprova a mesma associação, mas sem significado estatístico (RM 10.8[0.93-125-68, IC 95%]). Para a análise de correlação encontrou-se uma relação inversa entre SOFA escore e a percentagem de perda de massa muscular (r = -0.48 e r2 = 0.23). Conclusões: Encontrou-se uma possível associação entre a presença da perda de massa muscular em pacientes críticos e o atraso em lograr as metas de nutrição. E relação inversa entre o valor SOFA escore e a porcentagem da perda de massa muscular.

Relación entre consumo crónico de betabloqueadores y mortalidad en sepsis y choque séptico / Relationship between chronic beta-blockers usage and mortality in sepsis and septic shock / A relação entre o consumo crônico de betabloqueadores e mortalidade em sepse e choque séptico

Resumen: Se ha considerado que los betabloqueadores pueden reducir la sobreestimulación adrenérgica en pacientes sépticos. Se diseñó este estudio retrospectivo de casos y controles para identificar la relación del consumo crónico de betabloqueadores en pacientes que desarrollaron sepsis y choque séptico tratados en UTI y la mortalidad a 30 días. Se incluyeron 104 pacientes dividiéndose en dos grupos: betabloqueadores (n = 16) y control (n = 88). Los pacientes del grupo de estudio no presentaron diferencia de mortalidad en relación con el control (p = 0.99); sin embargo, el SOFA cardiovascular fue mayor (p = 0.05), requirieron mayor dosis de vasopresores (p = 0.18) y mayor tiempo de estancia en UTI (p = 0.11). El consumo crónico de betabloqueadores no fue factor de protección para mortalidad en pacientes sépticos.

Abstract: It has been considered that beta-blockers are used to reduce adrenergic overstimulation in septic patients. Therefore, we designed a case-control study to identify if chronic use of beta-blockers is related to less 30-day mortality among septic patients. We review medical records of ICU admission. In total, we included 104 patients divided into two groups: beta-blockers (n = 16) and control (n = 88). Patients in the study group showed no difference in mortality relative to control (p = 0.99), however the cardiovascular SOFA was higher (p = 0.05), required higher dose of vasopressors (p = 0.18) and longer stay in UTI (p = 0.11). The chronic use of beta-blockers was not protective factor for mortality in septic patients.

Resumo: Considerou-se que os betabloqueadores podem reduzir a superestimulação adrenérgica em pacientes sépticos. Assim, desenhou-se um estudo retrospectivo de caso e controle para identificar a relação de consumo crônico de betabloqueadores em pacientes que desenvolveram septicemia e choque séptico tratados na UTI e mortalidade aos 30 dias. Foram incluídos 104 pacientes divididos em dois grupos: betabloqueadores (n = 16) e de controle (n = 88). Os pacientes no grupo do estudo não demonstraram diferença na mortalidade em relação ao grupo de controle (p = 0.99), no entanto o SOFA cardiovascular foi maior (p = 0.05), necessitaram uma dose mais elevada de vasopressores (p = 0.18) e maior tempo de UTI (p = 0.11). O consumo crónico de betabloqueadores não foi o fator de proteção para a mortalidade em pacientes sépticos.

Hydrological modeling of the Peruvian-Ecuadorian Amazon basin using GPM-IMERG satellite-based precipitation dataset.

In the last two decades, rainfall estimates provided by the Tropical Rainfall Measurement Mission (TRMM) have proven applicable in hydrological studies. The Global Precipitation Measurement (GPM) mission, which provides the new generation of rainfall estimates, is now considered a global successor to TRMM. The usefulness of GPM data in hydrological applications, however, has not yet been evaluated over the Andean and Amazonian regions. This study uses GPM data provided by the Integrated Multi-satellite Retrievals (IMERG) (product/final run) as input to a distributed hydrological model for the Amazon Basin of Peru and Ecuador for a 16-month period (from March 2014 to June 2015) when all datasets are available. TRMM products (TMPA V7, TMPA RT datasets) and a gridded precipitation dataset processed from observed rainfall are used for comparison. The results indicate that precipitation data derived from GPM-IMERG correspond more closely to TMPA V7 than TMPA RT datasets, but both GPM-IMERG and TMPA V7 precipitation data tend to overestimate, compared to observed rainfall (by 11.1% and 15.7 %, respectively). In general, GPM-IMERG, TMPA V7 and TMPA RT correlate with observed rainfall, with a similar number of rain events correctly detected (~20%). Statistical analysis of modeled streamflows indicates that GPM-IMERG is as useful as TMPA V7 or TMPA RT datasets in southern regions (Ucayali basin). GPM-IMERG, TMPA V7 and TMPA RT do not properly simulate streamflows in northern regions (Marañón and Napo basins), probably because of the lack of adequate rainfall estimates in northern Peru and the Ecuadorian Amazon.

Optimizar los tiempos de pabellón; un nuevo enfoque a una idea antigua / Optimize or times; a new approach to an old idea

Introducción. El tiempo de pabellón es un recurso escaso y costoso. Por eso optimizar el tiempo de un paciente en pabellón se presenta como el gran desafío. Se han intentado múltiples intervenciones para aumentar la eficiencia de los pabellones, desde técnicas para afianzar los equipos, hasta cambios en la planta física, pero el objetivo final sigue siendo hacer del proceso quirúrgico una sinfonía armónica. Nuestro objetivo es dar los primeros pasos que permitan, en un estudio de largo plazo, encontrar la fórmula teórica que permita optimizar el tiempo en pabellón. Métodos. Estudio prospectivo con registro de los procesos en un pabellón de especialidad durante 4 semanas. Se registraron los tiempos de diferentes procesos de cada paciente y se descompuso en subprocesos (traslado, preoperatorio, técnicoanestesia, inducción-anestésica, arsenalera, lavado-paciente, prequirúrgico, quirúrgico, despertar, salida, aseo). Luego del análisis se plantearon 4 escenarios teóricos: (I)"tiempo observado"; (II)"tiempo mejorado", donde se realizó el traslape máximo de los subprocesos observados; (III)"tiempo mejorado+preanestesia", considerando sala de preanestesia y paciente se prepara antes de entrar a pabellón; (IV)"tiempo mejorado+preanestesia+arsenalera", además del paciente preparado se cuenta con arsenalera lista al momento del ingreso a pabellón. Se analizó la disminución del tiempo quirúrgico entre el observado y los tres escenarios a través de comparación de medianas (Wilcoxon). Además se estratificó según complejidad de la cirugía. Resultados. Se analizaron 22 cirugías urológicas de distinta complejidad: baja 32 por ciento; media 45 por ciento y alta 23 por ciento. La mediana del tiempo observado (I) fue de 123 minutos, el (II) fue 103 min, el (III) fue 74 min y (IV) fue 69 min. Disminución que es estadísticamente significativa al comparar el tiempo observado (I) con los tres grupos (p<0,001). Al hacer la comparación del observado con los otros tres escenarios según grado de complejidad de la cirugía, también se evidencia disminución estadísticamente significativa en los 3 grupos (baja, mediana y alta complejidad) con p 0.018; p 0.07; p 0.043 respectivamente. Conclusión. El análisis realizado se basa en tiempos reales y su comparación es con escenarios teóricos; sin embargo permite visualizar que sólo con un buen ordenamiento de los procesos en pabellón (tiempo mejorado (II)), traslapando aquellos procesos independientes, disminuiría el tiempo del pabellón en 20 min por cirugía. La cual sería mayor si se implementara el paciente ingresando preparado (III) y la arsenalera lista al ingreso del pabellón (IV). Sin embargo, estamos conscientes que estos escenarios son inalcanzables en nuestro medio. Además surgiría la interrogante de si serán lo suficientemente seguros para el paciente. En resumen solo cambiando la forma de gestionar los procesos del pabellón, se podría obtener un mejor aprovechamiento del tiempo y con esto aumentar la eficiencia de los pabellones. (AU)

Introduction. EThe time in the operating room (OR) is a scarce and expensive resource. So optimize the time of a patient in the OR presents as a great challenge. Multiple interventions have been attempted to increase the efficiency of the ORs, from techniques to strengthen teams, to changes in the physical plant, but the ultimate goal remains to make the surgical process an harmonic symphony. Our aim is to take the first steps to allow, on a long-term study, find the theoretical formula for optimizing the time in the ORs. Method. Prospective study that consisted in the registration of processes in a subspecialty OR for 4 weeks. Times of different processes were recorded for each patient and were decomposed into subprocesses (transfer, preoperative, anesthesiatechnician, anestheticinduction, instrumentalist, skin-preparation, surgeonpreoperative, surgery, awakening, exit, ORs-cleaning). After analyzing, four theoretical scenarios were proposed: (I) "observed time" (II) "Improved time", which consisted in the maximum overlap of the observed sub processes; (III) "improved time + preanesthesia " considering pre-anesthesia room and patient prepared before entering the operating room; (IV) " improved time + preanesthesia + instrumentist", where beside patient ready it counts with instrumentist also ready when entering de operating room. We analyzed the reduction of surgical time between the observed and the three scenarios through medians comparison (Wilcoxon). Furthermore stratified by surgery's complexity. Results. 22 urological surgeries of varied complexity were analyzed: low 32 pertcent, mean 45 pertcent, high 23pertcent. The observed median time (I) was 123 minutes, the (II) was 103 min, the (III) was 74 min and (IV) was 69 min. Decreased time is statistically significant by comparing the observed time (I) with the three groups (p <0.001). Comparing the observed time with the other three scenarios stratified by surgery complexity, also evidenced statistically significant decrease in the 3 groups (low, medium and high complexity) with p 0.018, p 0.07, p 0.043 respectively. Conclusión. The analysis is based on comparing real times with the oretical scenarios, however allows to see that with only a good order of the processes in the operating room (improved time (II)), overlapping those independent processes, decreases the time in the OR in 20 min. Which would be higher if the patient is prepared (III) and instrumentist ready (IV) when the patient enters to the Operating Room. However, we are aware that these scenarios are unattainable in our reality. Besides, the question that would arise is whether they would be safe enough for the patient. Therefore just by changing the way you manage processes in the OR, you might get a better use of time and thereby increase the efficiency of them.(AU)

Optimizar los tiempos de pabellón; un nuevo enfoque a una idea antigua / Optimize pavilion times; a new approach to and old idea

INTRODUCCION: El tiempo de pabellón es un recurso escaso y costoso. Por eso optimizar el tiempo de un paciente en pabellón se presenta como el gran desafío. Se han intentado múltiples intervenciones para aumentar la eficiencia de los pabellones, desde técnicas para afianzar los equipos, hasta cambios en la planta física, pero el objetivo final sigue siendo hacer del proceso quirúrgico una sinfonía armónica. Nuestro objetivo es dar los primeros pasos que permitan, en un estudio de largo plazo, encontrar la fórmula teórica que permita optimizar el tiempo en pabellón. (AU)

INTRODUCTION: The time in the operating room (OR) is a scarce and expensive resource. So optimize the time of a patient in the OR presents as a great challenge. Multiple interventions have been attempted to increase the efficiency of the ORs, from techniques to strengthen teams, to changes in the physical plant, but the ultimate goal remains to make the surgical process an harmonic symphony. Our aim is to take the first steps to allow, on a long-term study, find the theoretical formula for optimizing the time in the ORs. (AU)

Circuncisión neonatal con anestesia local: Resultados de un protocolo estandarizado / Neonatal circumcision with local anesthesia: Results of a standardized protocol

Introducción La circuncisión neonatal es un procedimiento frecuente en EE. UU. y en otros países, y presenta baja tasa de complicación en manos entrenadas. Sin embargo, en Chile recién está siendo incorporado clínicamente a nuestro medio. Nuestro objetivo fue establecer un protocolo local estandarizado de circuncisión neonatal con anestesia local y evaluar sus resultados y las posibles complicaciones. Pacientes y método Protocolo prospectivo estandarizado a pacientes que soliciten circuncisión neonatal cuyos criterios de inclusión fueron: niños < 60 días y < 5 kg. La técnica quirúrgica consiste en anestesia local tópica y bloqueo peneano, atrición del prepucio y mucosa redundante con clamp de Mogen® y sección con bisturí. Se evalúa protocolo utilizado desde noviembre de 2005 a octubre de 2014 por un urólogo pediatra y/o cirujano pediatra entrenados en la técnica. Se registran y analizan complicaciones y condiciones hasta el alta definitiva. Resultados En 9 años se aplicó el protocolo a 108 pacientes. La edad promedio al procedimiento fue de 9 días (1-52). Un paciente (0,9%) presentó sangrado inmediato, requiriendo cirugía posterior. Todos los pacientes fueron dados de alta definitiva de controles al mes, sin otras complicaciones. La razón para realizar el procedimiento fue por solicitud de los padres en el 100% de los casos por razones sociales o religiosas. Conclusión La circuncisión neonatal con anestesia local es un procedimiento sencillo y que en casos seleccionados tiene excelentes resultados, sin mayores complicaciones. Con el debido entrenamiento y adecuando el protocolo inicial, se puede realizar de manera ambulatoria, sin necesidad de someter al niño a los riesgos de la anestesia general en recién nacidos.

Introduction Neonatal circumcision is a common procedure in the US and other countries, with low rates of complications in trained hands. However, it has recently been incorporated into the clinical environment in Chile. Our goal was to establish a local standardised protocol for neonatal circumcision under local anaesthesia, and evaluate the results and possible complications. Patients and method A standardised prospective protocol was used on patients who underwent neonatal circumcision. The inclusion criteria were: children < 60 days and < 5 kg. The surgical technique used was topical local anaesthesia and penile block, attrition of redundant prepuce and mucosa with Mogen® clamp, and section with scalpel. The protocol was used and evaluated from November 2005 to October 2014 by a paediatric surgeon and/or paediatric urologist trained in the technique. Complications and conditions until final discharge were analysed. Results The protocol was applied to 108 patients over a 9 year period. The mean age at procedure was 9 days (1-52). One patient (0.9%) had immediate bleeding, requiring further surgery. All patients were discharged from further medical checks at 1 month, without any other complications. The reason for the procedure was by parental request in 100% of the cases, and always for sociocultural reasons. Conclusion Neonatal circumcision under local anaesthesia is a simple procedure, and has excellent results in selected patients, and with no major complications. With proper training, and adapting the initial protocol, it can be performed on an outpatient basis, without putting the neonates through the risks of general anaesthesia.

[Neonatal circumcision with local anesthesia. Results of a standardized protocol]. / Circuncisión neonatal con anestesia local. Resultados de un protocolo estandarizado.

INTRODUCTION: Neonatal circumcision is a common procedure in the US and other countries, with low rates of complications in trained hands. However, it has recently been incorporated into the clinical environment in Chile. Our goal was to establish a local standardised protocol for neonatal circumcision under local anaesthesia, and evaluate the results and possible complications. PATIENTS AND METHOD: A standardised prospective protocol was used on patients who underwent neonatal circumcision. The inclusion criteria were: children <60days and <5kg. The surgical technique used was topical local anaesthesia and penile block, attrition of redundant prepuce and mucosa with Mogen® clamp, and section with scalpel. The protocol was used and evaluated from November 2005 to October 2014 by a paediatric surgeon and/or paediatric urologist trained in the technique. Complications and conditions until final discharge were analysed. RESULTS: The protocol was applied to 108 patients over a 9year period. The mean age at procedure was 9days (1-52). One patient (0.9%) had immediate bleeding, requiring further surgery. All patients were discharged from further medical checks at 1 month, without any other complications. The reason for the procedure was by parental request in 100% of the cases, and always for sociocultural reasons. CONCLUSION: Neonatal circumcision under local anaesthesia is a simple procedure, and has excellent results in selected patients, and with no major complications. With proper training, and adapting the initial protocol, it can be performed on an outpatient basis, without putting the neonates through the risks of general anaesthesia.

Vesicoureteral reflux: current management in children.

Vesicoureteral reflux (VUR) is a disorder that has been studied since the early days of pediatric urology. From 1893, when it was first documented in humans by Pozzi, the research and clinical management of VUR has been marked by pendulum swings through the decades. Initially, the vesicoureteral junction was the main subject of study, whereas current practice takes into account the bladder and bowel dynamics. The primary objective, however, is unchanged: preservation of the kidney and its function. Management of the condition has included open surgery, minimally invasive surgery, endoscopic treatment, antibiotic prophylaxis, and watchful waiting. In this article, we will attempt to cover every angle of this complex pathology and its current management in children.

Outcome of tunnelled central venous catheters used for haemodialysis in children weighing less than 15 kg.

PURPOSE: Central venous catheters (CVC) are frequently used for haemodialysis (HD) in children. However, there is paucity of information on the outcomes of CVCs when used for HD in very young patients. Our objective is to report the success, safety and complication rates of CVCs used for HD in children weighing less than 15 kg. MATERIALS AND METHODS: This is a single-center retrospective study of all patients with end-stage renal disease (ESRD) weighing <15kg, who underwent a tunneled CVC placement for HD, between July 2006 and June 2012 at our institution. Analysed data included clinical background, age and weight at initiation of HD, outcome of HD, CVC vein insertion site, reason for removal, and catheter survival (in days). RESULTS: Thirty-one CVC were placed in 11 patients weighing <15 kg, 8 males and 3 females. The main causes of ESRD were renal dysplasia and congenital nephrotic syndrome. At the beginning of HD, mean age was 27.5 (range 5-60) months and mean weight was 10.4 kg (4.5-13 kg). The preferred insertion site was the right internal jugular vein (90%). Mean duration of HD was 312 days. Mechanical factors were the main reason for catheter removal (39%). Mean catheter survival was 110 days/catheter. CONCLUSIONS: We believe our study provides relevant information and encouraging data to support the use of CVC for HD in this cohort of infants; however, further improvement in prevention of catheter thrombosis and management of infections needs to be achieved.

Enfrentamiento clínico del hidrocolpos a diferentes edades pediátricas / Clinical management of hydrocolpos at different pediatric ages

INTRODUCCIÓN Y OBJETIVOS: El hidro y/o hematocolpos es una condición patológica rara, de incidencia 1/16.000 niñas, que consiste en la dilatación de vagina y/o útero por material líquido o hemático. Sus diferentes formas de presentación y especialmente al grupo etario que afecta, puede ser un diagnostico no siempre fácil como también un manejo inadecuado puede determinar diferentes complicaciones de diversa gravedad. El objetivo de este trabajo es analizar los casos tratados en el servicio de urología pediátrica de acuerdo al grupo etario que correspondió su debut clínico. Material y métodos: Estudio retrospectivo de pacientes con diagnóstico de hidro o hematocolpos entre los años 2007 y 2011. Se analizan datos demográficos, patologías asociadas, tratamiento y complicaciones. Resultados: Se analizaron 8 niñas, todas con ambigüedad genital al nacer, 7 con hiperplasia suprarrenal congénita. En 6 pacientes se realiza examen endoscópico bajo anestesia general que confirma la presencia de un seno urogenital (SUG) a una edad promedio de 36 meses (r 3m-12a). La edad promedio de presentación del hidrocolpos fue de 6 años (r 1m - 14 a) con un peak entre los 0-2 años y a los 11-14 años, diagnóstico confirmado mediante ecografía. Otras patologías asociadas fueron: cardiopatía congénita (1) e ITU recurrente (5). Una paciente presentó una sobreinfección del hidrocolpos con shock séptico asociado. En dos pacientes (11 y 14 años) se ha realizado el descenso en bloque, 3 pacientes se drena el hidrocolpos por vía endoscópica (cistoscopía). Conclusiones: El hidrocolpos es una patología rara, pero que se debe tener presente especialmente en diagnostico prenatal y/o recién nacidos que se estudian por masa pelviana y/o abdominal, en pacientes con SUG; ya que su detección precoz y tratamiento pueden evitar consecuencias graves como shock séptico de origen uroginecológico.

INTRODUCTION AND OBJECTIVES: hydro and / or hematocolpos are a rare pathological condition, incidence 1/16.000 girls, which involves dilation of vagina and / or uterus with hematic fluid or material. Due to its different forms of presentation and especially the affected age group, diagnosis may not always be easy as improper Management can determine different complications of varying severity. The aim of this paper is to analyze the cases treated in our pediatric urology service according to age group of clinical debut. Material and methods: Retrospective study of patients diagnosed with hydro or hematocolpos between 2007 and 2011. Demographics, co morbidities, treatment and complications were analyzed. Results: 8 girls, all with ambiguous genitalia at birth, 7 with congenital adrenal hyperplasia were analyzed. In 6 patients endoscopic examination performed under general anesthesia confirmed the presence of a urogenital sinus (SUG) at an average age of 36 months (r 3m-12a). The average age of hydrocolpos presentation was 6 years (r 1m - 14) with a peak between 0-2 years and 11-14 years, confirmed by ultrasound diagnosis. Other associated diseases were: congenital heart disease (1) and recurrent UTI (5). One patient had a superinfection of hydrocolpos associated with septic shock. In two patients (11 and 14y.o.) an “en bloc” descent was performed, in 3 patients the hydrocolpos was drained endoscopically (cystoscopy). Conclusiones: hydrocolpos is a rare condition, but it must be especially considered in prenatal diagnosis and / or infants studied by pelvic and / or abdominal mass, in patients with SUG, as early detection and treatment can prevent serious consequences as septic shock of urogynecological origin.

Evaluación urodinámica en pacientes sometidos a braquiterapia por rabdomiosarcomas genitourinarios / Urodynamic evaluation in patients undergoing brachytherapy for genitourinary rhabdomyosarcoma

Introducción: El rabdomiosarcoma (RMS) es uno de los tumores sólidos pediátricos más frecuentes. Se ha descrito que la braquiterapia es una herramienta prometedora para tratar esta patología, presentando menos secuelas en los tejidos vecinos. Este estudio tiene como propósito objetivar las secuelas de la dinámica vesical, a través de evaluación con estudios urodinámicos (EUD) a pacientes pediátricos sometidos a cirugía conservadora más braquiterapia por RMS de origen uroginecológico.P acientes y Métodos: Revisión de casos de RMS uroginecológicos desde 2004 a 2011, manejados con braquiterapia pre y/o post operatoria, más quimioterapia preoperatoria. Se realiza estudio urodinámico invasivo y/o no invasivo para evaluar secuelas en función miccional. Resultados: Serie de 4 casos de pacientes con RMS genitourinarios sometidos a braquiterapia sola o asociada a cirugía resectiva: 2 de próstata, 1 vaginal y 1 vesical. Los estudios urodinámicos muestran una capacidad vesical disminuida en 1 paciente, mínima disminución en otro y 2 presentan capacidad normal para la edad. La acomodación del detrusor es adecuada en los 4 pacientes y no hay alteraciones en la función esfinteriana. Clínicamente todos los pacientes son continentes y no presentan sintomatología de disfunción miccional. Conclusiones: El RMS genitourinario es un tumor altamente invasivo y secuelante. La braquiterapia ha logrado un nivel de radiación óptimo que se enfoca en el área tumoral sin afectar mayormente tejidos vecinos. Esto implicaría menos probabilidades de producir efectos secundarios en la dinámica vesical. Hemos demostrado en esta serie, con evaluación urodinámica, que estos pacientes con RMS presentan mínimas alteraciones en la evaluación urodinámica y no tienen repercusión clínica post tratamiento. Trabajos futuros están orientados a evaluación urodinámica pre y post braquiterapia.

Introduction: Rhabdomyosarcoma (RMS) is one of the most common pediatric solid tumors. It has been described that brachytherapy is a promising tool to treat this pathology, presenting less sequelae in neighboring tissues. This study aims to objectify alterations in bladder function through evaluation with urodynamic studies (UDS) in pediatric patients undergoing conservative surgery plus brachytherapy due to urogynecological RMS. Patients and Methods: A review of cases of RMS urogynecological from 2004-2011, managed with pre and / or post-operative brachytherapy, and preoperative chemotherapy. Invasive and / or noninvasive Urodynamic Studies are performed to assess sequelae in voiding function. Results: A series of 4 cases of genitourinary RMS patients undergoing brachytherapy alone or combined with resection surgery: 2 prostate cases, 1 vaginal and 1 bladder case. Urodynamic studies show a decreased bladder in 1 patient, minimal decrease in another and 2 show normal capacity for the patients age. Detrusor compliance is adequate in the 4 patients and there are no alterations in sphincter function. Clinically all patients are continent and show no symptoms of voiding dysfunction. Conclusions: Genitourinary RMS are a highly invasive and invalidating tumor. Brachytherapy achieves optimal radiation level that focuses on the tumor area without greatly affecting neighboring tissues.This could imply less likelyhood to cause side effects in bladder dynamics. We have shown in this series, with urodynamic evaluation, that these patients with RMS have minimal alterations in urodynamic Studies and have no post-treatment clinical impact. Future work is aimed at evaluating urodynamics before and after brachytherapy.

Nuevo abordaje sagital anterior en cáliz, sin abrir el recto, reporte inicial / New anterior sagittal approach in "Calix", without opening the rectum, initial report

El abordaje sagital transrectal anterior (ASTRA) resulta de amplia utilidad para el enfrentamiento de patología urológica pediátrica. Actualmente es el gold-standar en el manejo del seno urogenital alto, malformaciones vaginales, trauma uretral complejo y tumores. Presentamos una modificación menos invasiva a este abordaje, comentando sus ventajas. En posición decúbito prono, con preparación intestinal; se realiza una incisión en “cáliz”; esta consiste en una sección vertical en línea media perianal desde horquilla vulvar a recto en mujeres, y desde base de escroto a recto en hombres, y otra incisión transversa, cóncava, en el tejido de transición entre mucosa rectal y piel, aproximadamente a dos centímetros del punto medio del ano. Caso 1: Niña de 13 años, consulta por dolor pélvico, diagnosticándose duplicación uterina y vaginal, con atresia de tercio distal de una hemivagina. Se realiza abordaje sagital anterior en cáliz, resecando tabique intervaginal y realizando plastia vaginal. Post operatorio sin complicaciones y vaginoscopía de control normal.. Continencia rectal normal. Caso 2: Niño de 12 años, portador de RMS de próstata tratado con braquiterapia + QMT el año 2009. En diciembre de 2011 presenta recidiva perianal diagnosticada por biopsia quirúrgica (incisión perineal media); en el 5º ciclo de QMT se explora por abordaje sagital anterior con incisión en cáliz, resecando tejido sospechoso, sin evidencias de enfermedad. Buena evolución postoperatoria, actualmente completando ciclos de QMT. Continencia rectal normal. El abordaje sagital anterior (ASTRA), ampliamente utilizado en urología pediátrica, tiene la desventaja de incidir el recto, con el riesgo de lesión de esfínteres e infecciones postoperatorias. Al realizar la incisión sagital anterior en cáliz, conservamos la amplitud y visión de campo clínico que con ASTRA, disminuyendo riesgos postoperatorios, permitiendo realimentación y alta precoz debido a su menor sintomatologia...

The anterior sagittal transrectal approach (ASTRA) is broadly useful for coping with pediatric urologic pathology. It is currently the gold standard in the management of high urogenital sinus, vaginal malformations, complex urethral trauma and tumors. We present a less invasive modification to this approach, discussing its advantages.In the prone position, with bowel preparation, an incision is made in “calix”, meaning a vertical section at the perineal midline from vulva to rectum in women, and from scrotal base to rectum in men, and another transverse, concave incision at the transition tissue between rectal mucosa and skin, approximately two centimeters from the anal midpoint. Case 1: A 13-year-old girl, with pelvic pain, due to uterine and vaginal duplication and atresia of the distal third of a hemivagina. Anterior sagittal approach in calyx is performed, resecting intervaginal Septum and performing vaginal plasty. Uncomplicated postoperative course, normal control Vaginoscopy. Normal rectal continence. Case 2: A 12-year-old boy, with RMS treated with prostate brachytherapy + chemotherapy in 2009. In December 2011 he presents with perianal recurrence diagnosed by surgical biopsy (median perineal incision) in the 5th chemotherapy cycle he is explored through an anterior sagital approach in “calix”, resecting suspicious tissue with no evidence of disease. Good postoperative course, currently completing cycles of chemotherapy. Normal rectal continence. The anterior sagital approach (ASTRA), widely used in pediatric urology, has the disadvantage of affecting the rectum, with the risk of sphincter injury and postoperative infections. When performing the anterior sagital incision “in calyx” we retain the amplitude of vision of the clinical field as with ASTRA, but reducing postoperative risks, allowing early feeding and early discharge due to the les symptoms...

Balanitis xerótica obliterante: ¿una amenaza permanente? / Obliterant xerotic balanitis, a permanent threat?

La balanitis xerótica obliterante (BXO) es una enfermedad inflamatoria crónica con una incidencia reportada de 10-40 por ciento de las fimosis en la infancia, cuyo diagnóstico va en aumento, posiblemente debido a una mayor sospecha. El objetivo de nuestro estudio es analizar los casos de BXO tratados en nuestro centro y su evolución. Revisión retrospectiva entre los años 2002 y 2012 de pacientes con diagnóstico de BXO confirmado por anatomía patológica. Se analizan datos demográficos, tratamiento médico y quirúrgico, y complicaciones post-operatorias. Se estudió retrospectivamente 26 biopsias con diagnóstico histopatológico de BXO. La edad promedio al momento de la circuncisión fue de 7,5 años (r 6m–15a, mediana 9,5). 16/26 pacientes fueron operados por urólogo infantil, y 10/26 por cirujano infantil. En relación a patologías asociadas, uno tenía una hipospadias, y otro un reflujo vesico-ureteral. Después del procedimiento, 6 pacientes recibieron corticoides tópicos. Dos pacientes presentaron estenosis del meato diagnosticado intra-cirugía que se manejan con dilataciones. Cinco pacientes tuvieron re-estenosis del prepucio, los que fueron sometidos a una segunda cirugía; todos habían sido operados por cirujano infantil inicialmente. El tiempo promedio total de seguimiento fue de 6,9 meses (r 1-36); sin embargo de los pacientes sin re-operación (21/26), el seguimiento promedio por urólogo fue de 7,3 meses y aquellos por cirujano infantil fue de 1,8 meses. En nuestro centro, el diagnóstico de BXO por anatomía patológica sólo se hace ante la sospecha clínica, ya que no todas las fimosis son estudiadas con biopsia; esto impide estimar su real incidencia. En esta serie, en los pacientes donde se realizó circuncisión total (80 por ciento), este fue el tratamiento definitivo sin complicaciones, a pesar que sólo el 23 por ciento de los pacientes recibieron corticoides tópicos post tratamiento...

Xerotic Balanitis (BXO) is a chronic inflammatory disease with a reported 10-40 percent of phimosis incidence in childhood, whose diagnosis is increasing, possibly due to greater suspicion. The aim of our study was to analyze cases of BXO treated in our center and its evolution. MATERIAL AND METHODS: Retrospective review between 2002 and 2012 of patients diagnosed with pathologically proven BXO. Demographics, medical and surgical treatment, and postoperative complications were analyzed. RESULTS: We retrospectively studied 26 biopsies with histopathological diagnosis of BXO. The average age at circumcision was 7.5 years (r 6m-15a, median 9.5). 16/26 of the patients were operated by pediatric urologists, and 10/26 by pediatric surgeons. Regarding comorbidities, one had a hypospadias, and one a vesicoureteral reflux.After the procedure, 6 patients received topical corticosteroids. Two patients had meatal stenosis diagnosed intra-operatively handled with dilations. Five patients had re-stenosis of the foreskin, which underwent a second surgery; pediatric surgeons initially operated all of them. Mean follow-up was 6.9 months (range 1-36), but between patients without re-operation (21/26), the average follow-up was 7.3 months when done by urologist and for those done by pediatric surgeon it was 1.8 months. CONCLUSIONS: In our center, the diagnosis of BXO by antomopathology is done only after clinical suspicion, because not all phimosis are studied with biopsy, for this reason we are unable to estimate its actual incidence. In this series, in all patients where complete circumcision (80 percent) was performed, this was the definitive treatment without complications, even though only 23 percent of patients received topical corticosteroids after treatment. Because little is known about BXO and it has possible future complications, we believe that its management and long-term monitoring should performed by a specialist.

Pieloplastía en menores de 10 kg; ¿abierta o laparoscópica? ¿Que camino escoger? / Pyeloplasty in children under 10 kg;? Open or laparoscopic? What path to choose?

Introducción: La obstrucción pieloureteral (OPU) es la uropatía obstructiva alta más frecuente, y se trata tradicionalemnte mediante pieloplastía abierta. Nuestro propósito es comparar la tasa de éxito y complicaciones de pieloplastía laparoscópica vs pieloplastía abierta en lactantes menores de 10 kg de peso. Material y métodos: Estudio retrospectivo comparativo de dos grupos de pacientes <10 kilos: laparoscópico (grupo 1) y abierto (grupo 2), operados entre 2005 y 2011. Se analizaron datos demográficos, resolución de la hidronefrosis (diámetro antero-posterior de la pelvis o DAP), complicaciones asociadas a la cirugía, ecografía y MAG3 pre y post quirúrgico. Resultados: Se incluyeron 34 pacientes. Ambos grupos comparables estadísticamente entre sí. El grupo 1 incluyó 9 pacientes, edad promedio 7 meses (r 1-11), lateralidad 3 derechos, DAP pre-cirugía 32 mm (r 17-45) y post-cirugía 13,7 mm (r 7-24), MAG3 pre y post-cirugía 38 por ciento y 39 por ciento respectivamente, el tiempo quirúrgico promedio fue de 153 min (r 90-210), sin complicaciones asociadas. El grupo 2 incluyó 25 pacientes, edad promedio de 3,7 meses (r 1-12), lateralidad 16 izquierdos, peso promedio 7 kg (r 3,8-10), DAP pre-cirugía 35,5 mm (r 10-73) y post-cirugía 13,9mm (r 3-31), MAG 3 pre-cirugía 37 por ciento y post cirugía 38 por ciento, tiempo quirúrgico promedio fue de 95 minutos (r 60-170), 1 paciente presentó urinoma post-cirugía, y se presentaron 3 reoperaciones...

Introduction: ureteropelvic junction obstruction (OPU) is the most common upper urinary tract obstructive uropathy, and is usually treated by open pyeloplasty. Our purpose is to analyze whether laparoscopic pyeloplasty has a similar success and complication rate as the open approach in patients of less than 10 kg.Materials and Methods: This retrospective study involved two groups of patients of less than 10 kilos: Open (group 1) and laparoscopic (group 2), operated between 2005 and 2011. We analyzed demographic data, resolution of hydronephrosis (anteroposterior diameter of the pelvis or DAP), complications of surgery, ultrasound and MAG3 pre and post surgery. Results: 34 patients were included. Both groups statistically comparable to each other. In group 1 there were 25 patients, average age of 3.7 months (r 1-12), 16 units were left, average weight 7 kg (r 3,8-10), anteroposterior renal pelvis diameter (DAP) pre-surgery 35,5 mm (r 10-73) and 13,9 mm after surgery (r 3-31), MAG 3 was 37 percent pre-surgery and 38 percent post-surgery, the average operative time was 95 minutes (r 60-170) , one patient had urinoma after surgery, and 3 required reoperation. In group 2, there were 9 patients, average age 7 months (r 1-11), 3 units were right, DAP was 32 mm pre-surgery (r 17-45) and 13.7 mm after surgery (r 7-24), MAG3 38 percent pre and 39 percent operative time was 153 min (r 90-210) without complications...

Técnica de Yang-Monti en ostomías continentes para cateterismo intermitente: experiencia de 15 años en Hospital Carlos Van Buren / Yang-­Monti technique in continent ostomies for intermittent catheterization: experience of 15 years in Hospital Carlos Van Buren

Introducción: Existen situaciones en la práctica urológica, en que el daño al aparato esfinteriano, uretra o vejiga obliga a recurrir a algún mecanismo que permita derivar un reservorio o vejiga ampliada hacia la pared abdominal. Para ello, es posible realizar ostomías continentes, con distintos segmentos intestinales, para autocateterismo intermitente limpio. La técnica de Yang-Monti presenta ventajas con respecto a otras ostomías, como el uso de un segmento intestinal pequeño, la mayor facilidad en ubicar y fijar la ostomía. Objetivo: Describir la experiencia de la técnica de Yang-Monti para cateterismo intermitente limpio, su evolución a través del tiempo y sus principales complicaciones según la casuística de nuestro centro. Materiales y Método: Estudio observacional retrospetivo. Revisión de 31 casos de ostomías continentes para cateterismo intermitente con la técnica de Yang-Monti desde enero de 1996 a septiembre del 2011. Se evalúa el diagnóstico etiológico, segmento intestinal del reservorio, ubicación del extremo distal de la ostomía y sus respectivas complicaciones precoces, tardías y estado al final del seguimiento. Resultado: En relación al segmento intestinal utilizado para reservorio, en 14 casos (45 por ciento) se utilizó colon sigmoides, en 9 (29 por ciento) íleon y en 8 transverso (26 por ciento). Con respecto al lugar en que fue exteriorizado el conducto de Yang-monti, en 19 casos (61por ciento) fue al ombligo y en 12 (39 por ciento) a fosa iliaca. Hubo complicaciones precoces (antes de 3 meses) en 8 pacientes (25 por ciento), de los cuales 4 (12,9 por ciento) requirieron reintervención, 3 de estos fallecen precozmente a consecuencia de la cirugía, presentando los diagnósticos de evisceración, obstrucción intestinal e infección de herida operatoria...

Introduction: There are situations in urological practice, in that the damage to the sphincter apparatus, urethra or bladder makes it necessary to use some mechanism to derive an enlarged reservoir or bladder to the abdominal wall. It is therefore possible to use different intestinal segments as continente ostomies for intermittent self cathetherisation. Yang Monti technique presents advantages over other ostomies: use of a small intestinal segment, easier placement and fixation. Objective: To describe the experience of the Yang-­‐Monti technique for clean intermittent catheterization, its evolution over time and its major complications in our center. Materials and Methods: Observational retrospective study. Review of 31 cases of Yang‐Monti intermittent catheterization continente ostomies from January 1996 to September 2011. Etiologic diagnosis, intestinal segment of the reservoir, location of the distal end of the ostomy and their early and late complications, and follow-­‐up status are evaluated. Results: Regarding the intestinal segment used for reservoir: in 14 cases (45 percent) was used sigmoid colon, in 9 ileum (29 percent) and in 8 transverse colon (26 percent). The Yang‐Monti was externalized in the navel in 19 cases (61 percent) and in iliac fossa 12 (39 percent)...

Braquiterapia en urología pediátrica: ¿una mejor alternativa con menos secuelas? / Brachytherapy in pediatric urology: a better alternative with les sequels?

El rabdomiosarcoma (RMS) representa el 3° tumor sólido extracraneal pediátrico. El uso de braquiterapia nos ha dado una nueva herramienta en el tratamiento de esta patología. En este trabajo queremos reportar la experiencia del uso de cirugía más conservadora asociada a braquiterapia en pacientes con RMS urológicos. Método: Revisión de todos los casos del año 2004-2011 de RMS urológicos manejados con braquiterapia postoperatoria y/o intraoperatoria, asociado a quimioterapia (QMT) preoperatoria. Resultados: En los 8 años de estudio hubo 6 RMS; se incluyen 5pacientes dado que uno fue RMS testicular que no requirió radioterapia. Caso 1: Masculino de 2 años RMS embrionario Grupo IV Estadio 4 de próstata, con QMT según protocolo y braquiterapia en la semana 24 de QMT. Lleva 76 meses libre de enfermedad. Caso 2: Masculino de 5 años, RMS embrionario Grupo lll Estadio 2 en vejiga, con QMT preoperatoria (12 semanas), cirugía con resección de tumor en cara anterior de vejiga y braquiterapia; completó esquema QMT. Lleva 30 meses libre de enfermedad, sin alteraciones miccionales. Caso 3: Masculino de 7 años, RMS embrionario Grupo lll Estadio 3 de próstata, con QMT según protocolo y braquiterapia en la semana 22 de QMT. Lleva 17meses libre de enfermedad, función vesical e intestinal normal. Caso 4: Femenino de 4 años, RMSbotroide Grupo lll Estadio 1 de vagina, con quimioterapia preoperatoria (12 semanas), cirugia y braquiterapia postquirúrgica, completó esquema de QMT. Lleva 4 meses libre de enfermedad, sin alteración miccional ni intestinal. Caso 5: Femenino de 2 años, RMS embrionario Grupo lll Estadio 3de psoas con compromiso de vejiga, con cirugía, QMT según protocolo y radioterapia externa; pre-sentó recidiva local, por lo que inicia QMT, cirugía resectiva del tumor en cara posterior de vejiga y uréter derecho + radioterapia intraoperatoria con cono. Lleva 2 meses libre de enfermedad. Sin alteración miccional ni intestinal...

The rhabdomyosarcoma (RMS) represents the 3m’ extracraneal solid tumor in children. Brachytherapy use has given a new tool in this disease treatment. In this investigation we want to report the experience of conservative surgery associated to brachytherapy in patients with urological RMS. Method: Retrospective review of all the urological RMS cases between the years 2004-2011managed with postoperative and or intraoperative brachytherapy, associated to preoperative chemotherapy ( CM T). Results: ln a 8 year period there were 6 RMS; 5 are included because one case was a testicular RMS that did not required radiotherapy. Case 1: Two years old male children, prostatic group l V stage 4 embryonal RMS, with CMT according to protocol and brachytherapy in the 24”’ week of CMT Has been 76 months free of disease. Case 2: Five years old boy, bladder group lll stage 2embryonal RMS, with preoperative CMT (12 weeks), surgery including resection of tumor in the bladder anterior wall and brachytherapy,‘ Completed CMT protocol. Has been 30 months free of disease, without voiding disorders. Case 3: Seven years old boy, prostatic group lll stage 3 embryonal RMS, with CMT according to protocol and brachytherapy in 22'“ CMT week. Has been 17 months free of disease, normal bladder and intestinal function. Case 4: Four years old girl, vagina group lll stage 1botyroid RMS, with preoperative CMT (12 weeks), resective surgery and post-operative brachytherapy, completed CMT according to protocol. Has been 4 months free of disease, without voiding or intestinal disorders. Case 5: Two years old girl, psoas compromising bladder group llI stage 3 embryonal RMS, with surgery, CMT according to protocol and external radiotherapy. Presented local recurrence reason why initiates new CMT protocol, resective posterior wall bladder and right ureter surgery intraoperative radiotherapy cone. Has been 2 months free of disease. Without voiding or intestinal...

[Venous thromboembolism risk and prophylaxis in the acute hospital care setting (ENDORSE II study): results of a Mexican national cross-sectional study]. / Tromboembolismo venoso y profilaxis en enfermedades agudas hospitalarias. Resultados en México de un estudio transversal multicéntrico (ENDORSE II).

BACKGROUND: It is well known that a significant proportion of hospitalized medical and surgical patients with risk factors for deep vein thrombosis (DVT) are not receiving thromboprophylaxis. We designed this study to evaluate the proportion of at-risk patients and the proportion of those receiving recommended prophylaxis. METHODS: We conducted a multicentric cross-sectional survey that included medical and surgical patients from 43 hospitals throughout Mexico. Patients who were at risk for DVT according to the ACCP 2004 guidelines were included and evaluated for thromboprophylaxis. RESULTS: Overall, 625 patients were at risk: 308 (49%) surgical patients and 317 (51%) medical patients. There were 179 (58%) surgical patients receiving recommended prophylaxis, whereas medical patients represented 117 (37%) patients. CONCLUSIONS: There is a significant proportion of hospitalized medical and surgical patients at risk for DVT. There is also a significant underutilization of recommended thromboprophylaxis among these patients.