El uso de artroscopia no aumenta la incidencia de complicaciones en el manejo de fracturas de mesetas tibiales Schatzker IV-VI / The use of arthroscopy does not increase the incidence of complications in the management of Schatzker IV-VI tibial plateau fractures

Antecedentes y objetivo: El uso de asistencia artroscopica en fracturas de mesetas tibiales tipos I-III según la clasificación de Schatzker se ha popularizado; sin embargo aún existe controversia con respecto a su uso en fracturas Schatzker IV-VI por el potencial riesgo de complicaciones. El objetivo de este trabajo es comparar la tasa de complicaciones intra o postoperatorias entre pacientes con fracturas de mesetas tibiales de este tipo tratados con y sin artroscopia al momento de la reducción y osteosíntesis definitiva. Materiales y métodos: Estudio de cohortes retrospectivo. Se incluyeron pacientes con diagnóstico de fractura de mesetas tibiales Schatzker IV-VI, sometidos a reducción y osteosíntesis definitiva, y al manejo de lesiones asociadas con o sin el uso de artroscopia evaluando la aparición de síndrome compartimental, trombosis venosa profunda e infección relacionada a fractura con seguimiento mínimo de 12 meses posterior a la cirugía definitiva. Resultados: Se incluyeron 288 pacientes: 86 operados con asistencia artroscópica y 202 sin asistencia artroscópica. La tasa de complicaciones total en el grupo con y sin asistencia artroscópica fue del 18,60 y 26,73%, respectivamente (p=0,141). No hubo asociación estadísticamente significativa entre el uso de asistencia artroscópica y el desarrollo de las complicaciones analizadas. Discusión y conclusiones: El uso de artroscopia de rodilla como apoyo de la reducción o como adyuvancia para el tratamiento simultáneo de lesiones intraarticulares concomitantes no aumentó el riesgo de complicaciones en el postoperatorio inmediato ni tras 12 meses de seguimiento.(AU)

Background and objective: The use of arthroscopy for tibial plateau fractures type I, II and III according to Schatzker classification has increased, yet its employment for tibial plateau fractures Schatzker IV, V and VI is controversial due to the potential risk of compartment syndrome, deep vein thrombosis and infection. We aimed to compare the rate of operative and postoperative complications among patients with these types of tibial plateau fractures treated with and without arthroscopy at the time of definitive reduction and osteosynthesis. Methods: Retrospective cohort study. Patients with diagnosis of tibial plateau fracture Schatzker IV, V or VI who underwent reduction and definitive osteosynthesis with or without the use of arthroscopy were included. The development of compartment syndrome, deep vein thrombosis, and fracture-related infection was evaluated up to 12 months after the definitive surgery. Results: Two hundred eighty-eight patients were included: 86 with arthroscopic assistance and 202 without it. The overall complication rate in the group with and without arthroscopic assistance was 18.60% and 26.73%, respectively (P=.141). No statistical association was found between the use of arthroscopic assistance and the development of the analyzed complications. Discussion and conclusion: The use of arthroscopy to support reduction or addressing concomitant intra-articular injuries did not increase the risk of complications in patients with high-energy tibial plateau fractures at 12 months of follow up.(AU)

[Translated article] The use of arthroscopy does not increase the incidence of complications in the management of Schatzker IV–VI tibial plateau fractures / El uso de artroscopia no aumenta la incidencia de complicaciones en el manejo de fracturas de mesetas tibiales Schatzker IV-VI

Antecedentes y objetivo: El uso de asistencia artroscopica en fracturas de mesetas tibiales tipos I-III según la clasificación de Schatzker se ha popularizado; sin embargo aún existe controversia con respecto a su uso en fracturas Schatzker IV-VI por el potencial riesgo de complicaciones. El objetivo de este trabajo es comparar la tasa de complicaciones intra o postoperatorias entre pacientes con fracturas de mesetas tibiales de este tipo tratados con y sin artroscopia al momento de la reducción y osteosíntesis definitiva. Materiales y métodos: Estudio de cohortes retrospectivo. Se incluyeron pacientes con diagnóstico de fractura de mesetas tibiales Schatzker IV-VI, sometidos a reducción y osteosíntesis definitiva, y al manejo de lesiones asociadas con o sin el uso de artroscopia evaluando la aparición de síndrome compartimental, trombosis venosa profunda e infección relacionada a fractura con seguimiento mínimo de 12 meses posterior a la cirugía definitiva. Resultados: Se incluyeron 288 pacientes: 86 operados con asistencia artroscópica y 202 sin asistencia artroscópica. La tasa de complicaciones total en el grupo con y sin asistencia artroscópica fue del 18,60 y 26,73%, respectivamente (p=0,141). No hubo asociación estadísticamente significativa entre el uso de asistencia artroscópica y el desarrollo de las complicaciones analizadas. Discusión y conclusiones: El uso de artroscopia de rodilla como apoyo de la reducción o como adyuvancia para el tratamiento simultáneo de lesiones intraarticulares concomitantes no aumentó el riesgo de complicaciones en el postoperatorio inmediato ni tras 12 meses de seguimiento.(AU)

Background and objective: The use of arthroscopy for tibial plateau fractures type I, II and III according to Schatzker classification has increased, yet its employment for tibial plateau fractures Schatzker IV, V and VI is controversial due to the potential risk of compartment syndrome, deep vein thrombosis and infection. We aimed to compare the rate of operative and postoperative complications among patients with these types of tibial plateau fractures treated with and without arthroscopy at the time of definitive reduction and osteosynthesis. Methods: Retrospective cohort study. Patients with diagnosis of tibial plateau fracture Schatzker IV, V or VI who underwent reduction and definitive osteosynthesis with or without the use of arthroscopy were included. The development of compartment syndrome, deep vein thrombosis, and fracture-related infection was evaluated up to 12 months after the definitive surgery. Results: Two hundred eighty-eight patients were included: 86 with arthroscopic assistance and 202 without it. The overall complication rate in the group with and without arthroscopic assistance was 18.60% and 26.73%, respectively (P=.141). No statistical association was found between the use of arthroscopic assistance and the development of the analyzed complications. Discussion and conclusion: The use of arthroscopy to support reduction or addressing concomitant intra-articular injuries did not increase the risk of complications in patients with high-energy tibial plateau fractures at 12 months of follow up.(AU)

Phytophthora capsici: Recent Progress on Fundamental Biology and Disease Management 100 Years After Its Description.

Phytophthora capsici is a destructive oomycete pathogen of vegetable, ornamental, and tropical crops. First described by L.H. Leonian in 1922 as a pathogen of pepper in New Mexico, USA, P. capsici is now widespread in temperate and tropical countries alike. Phytophthora capsici is notorious for its capability to evade disease management strategies. High genetic diversity allows P. capsici populations to overcome fungicides and host resistance, the formation of oospores results in long-term persistence in soils, zoospore differentiation in the presence of water increases epidemic potential, and a broad host range maximizes economic losses and limits the effectiveness of crop rotation. The severity of disease caused by P. capsici and management challenges have led to numerous research efforts in the past 100 years. Here, we discuss recent findings regarding the biology, genetic diversity, disease management, fungicide resistance, host resistance, genomics, and effector biology of P. capsici.

[Translated article] The use of arthroscopy does not increase the incidence of complications in the management of Schatzker IV-VI tibial plateau fractures.

BACKGROUND AND OBJECTIVE: The use of arthroscopy for tibial plateau fractures type I, II and III according to Schatzker classification has increased, yet its employment for tibial plateau fractures Schatzker IV, V and VI is controversial due to the potential risk of compartment syndrome, deep vein thrombosis and infection. We aimed to compare the rate of operative and postoperative complications among patients with these types of tibial plateau fractures treated with and without arthroscopy at the time of definitive reduction and osteosynthesis. METHODS: Retrospective cohort study. Patients with diagnosis of tibial plateau fracture Schatzker IV, V or VI who underwent reduction and definitive osteosynthesis with or without the use of arthroscopy were included. The development of compartment syndrome, deep vein thrombosis, and fracture-related infection was evaluated up to 12 months after the definitive surgery. RESULTS: Two hundred eighty-eight patients were included: 86 with arthroscopic assistance and 202 without it. The overall complication rate in the group with and without arthroscopic assistance was 18.60% and 26.73%, respectively (p=.141). No statistical association was found between the use of arthroscopic assistance and the development of the analysed complications. DISCUSSION AND CONCLUSION: The use of arthroscopy to support reduction or addressing concomitant intra-articular injuries did not increase the risk of complications in patients with high-energy tibial plateau fractures at 12 months of follow up.

Primer aislamiento y caracterización de la cepa prototipo del virus SARS-CoV-2 a inicios de la pandemia de la COVID-19 en el Perú

Introducción: Actualmente los contagios por el virus del SARS-CoV-2 supera los 600 millones de casos en el mundo. Objetivo: Aislar y caracterizar el virus SARS-CoV-2 causante de la COVID-19 a inicios de la pandemia en el Perú. Materiales y métodos: Se realizó el aislamiento viral a partir de 20 muestras de hisopado nasal y faríngeo positivas a SARS-CoV-2 por RT-PCR. El aislamiento se realizó en las líneas celulares Vero ATCC CCL-81 y Vero E6, evaluando el efecto citopático, la presencia del virus por RT-PCR, inmunofluorescencia indirecta (IFI) y posterior identificación por secuenciación genómica. Posteriormente, uno de los aislamientos de mayor circulación fue seleccionado y denominado cepa prototipo (PE/B.1.1/28549/2020), realizándose 10 pasajes sucesivos en células Vero ATCC CCL-81 para evaluar la dinámica de mutaciones. Resultados: Se observaron 11 aislamientos de virus por efecto citopático confirmándose por RT-PCR e IFI, de los cuales 6 fueron secuenciados identificándose los linajes B.1, B.1.1, B.1.1.1 y B.1.205, según el comité Pango de los genomas. La cepa prototipo corresponde a la variante B.1.1 y el análisis de las secuencias de los pasajes sucesivos mostró mutaciones a nivel de la proteína de la espiga (S) del virus, sin variación en la identidad del linaje. Conclusiones: Se aislaron 4 linajes en la línea celular Vero ATCC CCL-81. Los subcultivos en la misma línea celular muestran mutaciones en la proteína de la espiga, lo que indica mayor adaptabilidad a la célula hospedera y variación de la patogenicidad in vitro, comportamiento que le permite tener más éxito de supervivencia.

Introduction: Currently, infections caused by the SARS-CoV-2 virus exceed 600 million cases in the world. Objective: Isolation and characterization of the SARS-CoV-2 virus causing COVID-19 at the beginning of the pandemic in Peru. Materials and methods: Twenty nasal and pharyngeal swab samples were isolated from SARS-CoV-2 using two cell lines, Vero ATCC CCL-81 and Vero E-6; virus identification was performed by RT-PCR and the onset of cytopathic effect (CPE) was evaluated by indirect immunofluorescence and subsequent identification by genomic sequencing. One of the most widely circulating isolates were selected and named the prototype strain (PE/B.1.1/28549/2020). Then 10 successive passages were performed on Vero ATCC CCL-81 cells to assess mutation dynamics. Results: We detected 11 virus isolates by cytopathic effect, and subsequently confirmed by RT-PCR and indirect immunofluorescence. Of these, six were sequenced and identified as the lineages B.1, B.1.1, B.1.1.1, and B.1.205 according to the Pango lineage nomenclature. The prototype strain corresponded to lineage B.1.1. The analysis of the strains from the successive passages showed mutations mainly at in the spike (S) protein of the virus without variation in the identity of the lineage. Conclusions: Four lineages were isolated in the Vero ATCC CCL-81 cell line. Subcultures in the same cell line show mutations in the spike protein indicating greater adaptability to the host cell and variation in pathogenicity in vitro, a behavior that allows it to have more survival success.

The use of arthroscopy does not increase the incidence of complications in the management of Schatzker IV-VI tibial plateau fractures. / El uso de artroscopia no aumenta la incidencia de complicaciones en el manejo de fracturas de mesetas tibiales Schatzker IV-VI.

BACKGROUND AND OBJECTIVE: The use of arthroscopy for tibial plateau fractures type I, II and III according to Schatzker classification has increased, yet its employment for tibial plateau fractures Schatzker IV, V and VI is controversial due to the potential risk of compartment syndrome, deep vein thrombosis and infection. We aimed to compare the rate of operative and postoperative complications among patients with these types of tibial plateau fractures treated with and without arthroscopy at the time of definitive reduction and osteosynthesis. METHODS: Retrospective cohort study. Patients with diagnosis of tibial plateau fracture Schatzker IV, V or VI who underwent reduction and definitive osteosynthesis with or without the use of arthroscopy were included. The development of compartment syndrome, deep vein thrombosis, and fracture-related infection was evaluated up to 12 months after the definitive surgery. RESULTS: Two hundred eighty-eight patients were included: 86 with arthroscopic assistance and 202 without it. The overall complication rate in the group with and without arthroscopic assistance was 18.60% and 26.73%, respectively (P=.141). No statistical association was found between the use of arthroscopic assistance and the development of the analyzed complications. DISCUSSION AND CONCLUSION: The use of arthroscopy to support reduction or addressing concomitant intra-articular injuries did not increase the risk of complications in patients with high-energy tibial plateau fractures at 12 months of follow up.

Honey polyphenols: regulators of human microbiota and health.

A comprehensive review of research over the last decade was conducted to carry out this work. The main objective of this work is to present relevant evidence of the effect of honey intake on the human intestinal microbiota and its relationship with the improvement of various chronic diseases, such as cirrhosis, metabolic syndrome, diabetes, and obesity, among others. Therefore, this work focuses on the health-improving honey dietary supplementation implications associated with specific changes in the human microbiota and their biochemical mechanisms to enhance the proliferation of beneficial microorganisms and the inhibition of pathogenic microorganisms. Consumption of honey polyphenols significantly improves people's health conditions, especially in patients with chronic disease. Hence, honey intake unequivocally constitutes an alternative way to enhance health and could be used to prevent some relevant chronic diseases.

Becas para la formación de médicos especialistas académicos del Hospital Clínico de la Universidad de Chile / Academic residents fellowship program at the University of Chile Clinical Hospital

The mission of the University of Chile Clinical Hospital is to be the main University Hospital in the country. Along with training of health professionals in clinical practice and research, the Hospital provides comprehensive health solutions to the community. Since its foundation, it played an important role in the training of health professionals and specialists. To fulfill this mission, it is important to have outstanding academics and a system that allows their renewal and replacement. From January 25, 2001, the University of Chile approved the regulations that rule the Residents Program Fellowship, aimed to train the new generations of clinical academics. These regulations allow the financing of training programs in basic or primary specialties (such as internal medicine, surgery, obstetrics and gynecology, among others) or in specialties derived from them (such as cardiology, gastroenterology and reproductive medicine, among others.) The different clinical departments and the Hospital Direction define each year how many places will be offered and in which specialties. The Faculty of Medicine Graduate School carries out the formal selection of the applicants. This article reviews the results of this program between 2013 and 2021, analyzing in detail the traceability of each graduate over the years.

Specificity and sensibility of the Spanish version of the COMFORT Behaviour Scale for assessing pain, grade of sedation and withdrawal syndrome in the critically ill paediatric patient. Multicentre COSAIP study (Phase 1).

AIM: The main aim of this investigation was to analyse the specificity and sensibility of the COMFORT Behaviour Scale (CBS-S) in assessing grade of pain, sedation, and withdrawal syndrome in paediatric critical care patients. METHOD: An observational, analytical, cross-sectional and multicentre study conducted in Level III Intensive Care Areas of 5 children's university hospitals. Grade of sedation was assessed using the Spanish version of the CBS-S and the Bispectral Index on sedation, once per shift over one day. Grade of withdrawal was determined using the CBS-S and the Withdrawal Assessment Tool-1, once per shift over three days. RESULTS: A total of 261 critically ill paediatric patients with a median age of 5.07 years (P25:0.9-P75:11.7) were included in this study. In terms of the predictive capacity of the CBS-S, it obtained a Receiver Operation Curve of .84 (sensitivity of 81% and specificity of 76%) in relation to pain; .62 (sensitivity of 21% and specificity of 78%) in relation to sedation grade, and .73% (sensitivity of 40% and specificity of 74%) in determining withdrawal syndrome. CONCLUSIONS: The Spanish version of the COMFORT Behaviour Scale could be a useful, sensible and easy scale to assess the degree of pain, sedation and pharmacological withdrawal of critically ill paediatric patients.

Especificidad y sensibilidad de la COMFORT Behavior Scale-Versión española para valorar el dolor, el grado de sedación y síndrome de abstinencia en el paciente crítico pediátrico. Estudio multicéntrico COSAIP (Fase 1) / Specificity and sensibility of the Spanish version of the COMFORT Behaviour Scale for assessing pain, grade of sedation and withdrawal syndrome in the critically ill paediatric patient. Multicentre COSAIP study (Phase 1)

Objetivo: El objetivo principal de la investigación fue analizar la especificidad y sensibilidad de la escala COMFORT Behavior Scale-Versión española (CBS-ES) en la determinación del grado de dolor, sedación y síndrome de abstinencia.Método: Se llevó a cabo un estudio observacional, analítico y transversal y multicéntrico en unidades de cuidados intensivos pediátricas de 5 hospitales españoles. Se valoró el grado de sedación del paciente crítico pediátrico de forma simultánea empleando para ello la CBS-ES y registrando los valores del Bispectral Index Sedation, una vez por turno durante un día. El grado de abstinencia se determinó una vez por turno, durante 3 días, empleando de forma simultánea la CBS-ES y la Withdrawal Assessment Tool-1.Resultados: Se incluyeron en el estudio un total de 261 pacientes críticos pediátricos con una mediana de 1,61 años (P25: 0,35-P75: 6,55). Por lo que a la capacidad predictiva de la CBS-ES se refiere se obtuvo un área bajo la curva de 0,84 (sensibilidad del 81% y especificidad del 76%) con relación al dolor; de 0,62 (sensibilidad del 27% y especificidad del 78%) en el caso de la sedación, y de 0,73 (sensibilidad del 40% y especificidad del 74%) en el del síndrome de abstinencia.Conclusiones: Se ha podido contrastar que la CBS-ES podría ser un instrumento sensible, útil y fácil de emplear para valorar el grado de dolor, sedación y síndrome de abstinencia farmacológico del paciente crítico pediátrico.

Aim: The main aim of this investigation was to analyse the specificity and sensibility of the COMFORT Behaviour Scale (CBS-S) in assessing grade of pain, sedation, and withdrawal syndrome in paediatric critical care patients.Method: An observational, analytical, cross-sectional and multicentre study conducted in Level III Intensive Care Areas of 5 children's university hospitals. Grade of sedation was assessed using the Spanish version of the CBS-S and the Bispectral Index on sedation, once per shift over one day. Grade of withdrawal was determined using the CBS-S and the Withdrawal Assessment Tool-1, once per shift over three days.Results: A total of 261 critically ill paediatric patients with a median age of 5.07 years (P25:0.9-P75:11.7) were included in this study. In terms of the predictive capacity of the CBS-S, it obtained a Receiver Operation Curve of .84 (sensitivity of 81% and specificity of 76%) in relation to pain; .62 (sensitivity of 21% and specificity of 78%) in relation to sedation grade, and .73% (sensitivity of 40% and specificity of 74%) in determining withdrawal syndrome.Conclusions: The Spanish version of the COMFORT Behaviour Scale could be a useful, sensible and easy scale to assess the degree of pain, sedation and pharmacological withdrawal of critically ill paediatric patients.

[Academic residents fellowship program at the University of Chile Clinical Hospital]. / Becas para la formación de médicos especialistas académicos del Hospital Clínico de la Universidad de Chile.

The mission of the University of Chile Clinical Hospital is to be the main University Hospital in the country. Along with training of health professionals in clinical practice and research, the Hospital provides comprehensive health solutions to the community. Since its foundation, it played an important role in the training of health professionals and specialists. To fulfill this mission, it is important to have outstanding academics and a system that allows their renewal and replacement. From January 25, 2001, the University of Chile approved the regulations that rule the Residents Program Fellowship, aimed to train the new generations of clinical academics. These regulations allow the financing of training programs in basic or primary specialties (such as internal medicine, surgery, obstetrics and gynecology, among others) or in specialties derived from them (such as cardiology, gastroenterology and reproductive medicine, among others.) The different clinical departments and the Hospital Direction define each year how many places will be offered and in which specialties. The Faculty of Medicine Graduate School carries out the formal selection of the applicants. This article reviews the results of this program between 2013 and 2021, analyzing in detail the traceability of each graduate over the years.

Grado de sedación del paciente crítico pediátrico y variables sociodemográficas y clínicas correlacionadas. Estudio multicéntrico COSAIP / Grade of sedation in the critically ill paediatric patient and its correlation with sociodemographic and clinical variables. Multicentre COSAIP study

Objetivos Determinar los niveles de sedación del paciente crítico pediátrico mediante el Biespectral Index Sensor (BIS) y analizar la relación entre el grado de sedación y las variables sociodemográficas y clínicas del paciente. Métodos Estudio observacional, analítico, transversal y multicéntrico de mayo de 2018 a enero de 2020 desarrollado en 5unidades de cuidados intensivos pediátricas del territorio español. Se registraron como variables sociodemográficas y clínicas el sexo, la edad, motivo de ingreso, si el paciente tenía enfermedad crónica, el tipo y número de fármacos que se le estaban administrando y la duración de la estancia. Además, se anotaron los valores del BIS una vez por turno, mañana y noche, durante 24 h. Resultados Se incluyó en el estudio a un total de 261 pacientes, de los cuales el 53,64% eran del sexo masculino, con una edad mediana de 1,61 años (0,35-6,55). El 70,11% (n=183) estaban analgosedados y monitorizados con el sensor BIS. Se observó una mediana en las puntuaciones globales de BIS de 51,24±14,96 en el turno de mañana y de 50,75±15,55 en el de noche. No se detectó significación estadística al comparar los niveles de BIS y las diversas variables sociodemográficas y clínicas del paciente crítico pediátrico. Conclusiones A pesar de las limitaciones inherentes al sensor BIS, los estudios existentes y el que aquí se presenta muestran que el BIS es un instrumento útil para monitorizar el grado de sedación en el paciente crítico pediátrico. Se requieren más investigaciones que objetiven qué variables relacionadas con el paciente tienen más peso en al grado de analgosedación y que contrasten clínicamente la eficacia de escalas como, por ejemplo, la COMFORT Behavior Scale versión española. (AU)

Aims To determine the grade of sedation in the critically ill paediatric patient using Biespectral Index Sensor (BIS) and to analyse its relationship with sociodemographic and clinical patient variables. Methods Observational, analytical, cross-sectional and multicentre study performed from May 2018 to January 2020 in 5 Spanish paediatric critical care units. Sex, age, reason for admission, presence of a chronic pathology, type and number of drugs and length of stay were the sociodemographic and clinical variables registered. Furthermore, the grade of sedation was assessed using BIS, 11per shift over 24hours. Results A total of 261 paediatric patients, 53.64% of whom were male, with a median age of 1.61 years (0.35-6.55), were included in the study. Of the patients, 70.11% (n=183) were under analgosedation and monitored using the BIS sensor. A median of BIS values of 51.24±14.96 during the morning and 50.75±15.55 during the night were observed. When comparing BIS values and sociodemographic and clinical paediatric variables no statistical significance was detected. Conclusions Despite the limitations of the BIS, investigations and the present study show that BIS could be a useful instrument to assess grade of sedation in critically ill paediatric patients. However, further investigations which determine the sociodemographic and clinical variables involved in the grade of paediatric analgosedation, as well as studies that contrast the efficacy of clinical scales like the COMFORT Behaviour Scale-Spanish version, are required. (AU)

Grade of sedation in the critically ill pediatric patient and its correlation with sociodemographic and clinical variables. Multicentre COSAIP study.

AIMS: To determine the grade of sedation in the critically ill paediatric patient using Biespectral Index Sensor (BIS) and to analyse its relationship with sociodemographic and clinical patient variables. METHODS: Observational, analytical, cross-sectional and multicentre study performed from May 2018 to January 2020 in 5 Spanish paediatric critical care units. Sex, age, reason for admission, presence of a chronic pathology, type and number of drugs and length of stay were the sociodemographic and clinical variables registered. Furthermore, the grade of sedation was assessed using BIS, once per shift over 24 h. RESULTS: A total of 261 paediatric patients, 53.64% of whom were male, with a median age of 1.61 years (0.35-6.55), were included in the study. Of the patients, 70.11% (n = 183) were under analgosedation and monitored using the BIS sensor. A median of BIS values of 51.24 ±â€¯14.96 during the morning and 50.75 ±â€¯15.55 during the night were observed. When comparing BIS values and sociodemographic and clinical paediatric variables no statistical significance was detected. CONCLUSIONS: Despite the limitations of the BIS, investigations and the present study show that BIS could be a useful instrument to assess grade of sedation in critically ill paediatric patients. However, further investigations which determine the sociodemographic and clinical variables involved in the grade of paediatric analgosedation, as well as studies that contrast the efficacy of clinical scales like the COMFORT Behaviour Scale-Spanish version, are required.

Tratamiento de la osteonecrosis de los maxilares asociada a medicamentos: Enfoque médico-quirúrgico de estadios II y III

Resumen Introducción: La osteonecrosis de los maxilares asociada a medicamentos (OMAM) se define como la presencia de hueso necrótico expuesto de los maxilares en pacientes con historia de tratamiento farmacológico antirresortivo o antiangiogénico. Se describen diferentes estadios se severidad, con tratamiento conservador para estadios 0 y I, y tratamiento médico-quirúrgico para II-III. Objetivo: Describir los factores desencadenantes, opciones de tratamiento médico-quirúrgico y resultados en pacientes con OMAM estadios II-III. Material y Método: Estudio retrospectivo, descriptivo, de pacientes diagnosticados con OMAM estadios II y III que requirieron manejo médico-quirúrgico en la Red de Salud UC-Christus entre los años 2007 y 2018. Resultados: Todos los pacientes presentaron historia de tratamiento con bifosfonatos intravenosos. La mayoría de los registros de seguimiento de pacientes estuvo disponible para su análisis. El tratamiento consistió en aseo quirúrgico, decorticación y secuestrectomía. Se reportó disminución de la sintomatología con resolución parcial en la mitad de los casos y cierre completo de la exposición ósea en los restantes. Conclusión: Sugerimos que el tratamiento médico-quirúrgico en pacientes con OMAM en etapas II y III es efectivo en términos de disminución de sintomatología y control de infección. Sin embargo, es necesario realizar nuevos estudios prospectivos, con mayor cantidad de pacientes y tiempo de seguimiento.

Abstract Introduction: Medication-associated osteonecrosis of the jaws (MRONJ) is defined as the presence of exposed necrotic bone of the jaws in patients with a history of antiresorptive or antiangiogenic drug treatment. Different stages of severity are described, with conservative treatment for stages 0 and I, and medical-surgical treatment for II-III. Aim: To describe the triggers, medical-surgical treatment options and outcomes in patients with stage II-III MRONJ. Material and Method: Retrospective, descriptive study of patients diagnosed with MRONJ stages II and III that required medical-surgical management in the UC-Christus Health Network between 2007 and 2018. Results: All patients had a history of treatment with intravenous bisphosphonates. Most of the patient follow-up records were available for analysis. Treatment consisted of surgical grooming, decortication, and sequestrectomy. A decrease in symptoms was reported with partial resolution in half of the cases, and complete closure of bone exposure in the remainder. Conclusion: We suggest that medical-surgical treatment in patients with MRONJ in stages II and III is effective in terms of reducing symptoms and controlling infection. However, it is necessary to carry out new prospective studies, with a greater number of patients and follow-up time.

Specificity and sensibility of the Spanish version of the COMFORT Behaviour Scale for assessing pain, grade of sedation and withdrawal syndrome in the critically ill paediatric patient. Multicentre COSAIP study (Phase 1). / Especificidad y sensibilidad de la COMFORT Behavior Scale-Versión española para valorar el dolor, el grado de sedación y síndrome de abstinencia en el paciente crítico pediátrico. Estudio multicéntrico COSAIP (Fase 1).

AIM: The main aim of this investigation was to analyse the specificity and sensibility of the COMFORT Behaviour Scale (CBS-S) in assessing grade of pain, sedation, and withdrawal syndrome in paediatric critical care patients. METHOD: An observational, analytical, cross-sectional and multicentre study conducted in Level III Intensive Care Areas of 5 children's university hospitals. Grade of sedation was assessed using the Spanish version of the CBS-S and the Bispectral Index on sedation, once per shift over one day. Grade of withdrawal was determined using the CBS-S and the Withdrawal Assessment Tool-1, once per shift over three days. RESULTS: A total of 261 critically ill paediatric patients with a median age of 5.07 years (P25:0.9-P75:11.7) were included in this study. In terms of the predictive capacity of the CBS-S, it obtained a Receiver Operation Curve of .84 (sensitivity of 81% and specificity of 76%) in relation to pain; .62 (sensitivity of 21% and specificity of 78%) in relation to sedation grade, and .73% (sensitivity of 40% and specificity of 74%) in determining withdrawal syndrome. CONCLUSIONS: The Spanish version of the COMFORT Behaviour Scale could be a useful, sensible and easy scale to assess the degree of pain, sedation and pharmacological withdrawal of critically ill paediatric patients.

Aspectos psicosociales de los programas de salud de personas mayores con hipoacusia y su impacto en la adherencia al uso de audífonos: una revisión narrativa

Resumen El envejecimiento progresivo de la población mundial es una preocupación reconocida por la mayoría de las propuestas de políticas públicas en diversas áreas, incluida salud. La persona mayor pertenece a un grupo social vulnerable, que requiere ser considerado en las intervenciones y políticas de salud pública. Existe una considerable pérdida de las capacidades sensoriales y motrices que suponen una disminución de la autonomía, la que si se asocia a la realidad de las personas mayores con menos ingresos, dificulta un acceso oportuno a prestaciones de salud para poder enfrentar la discapacidad de manera apropiada. Las consecuencias de la pérdida de la capacidad auditiva en la persona mayor se manifiestan en problemas de la comprensión del habla, deterioro cognitivo y trastornos de la salud mental como ansiedad y depresión. Lamentablemente, las intervenciones para aumentar la adherencia de los usuarios al uso de audífonos no han mostrado muchos resultados favorables. Un correcto diagnóstico permite tener una orientación y rehabilitación adecuada a través de la generación de programas y estrategias enfocadas en la integración social, permitiendo que la calidad de vida se mantenga o mejore no solo en las personas con hipoacusia. Implementar un abordaje que busque tener un impacto positivo en la adherencia al uso de audífonos debe incluir y desarrollar programas de rehabilitación auditiva que consideren aspectos de contexto como vivienda, red de apoyo e integración social, entre otros.

Abstract Progressive aging of the world population is a concern recognized by most public policy proposals in various areas, including health. The elderly belongs to a vulnerable social group, which requires consideration in public health interventions and policies. There is a considerable loss of sensory and motor capacities that decreases autonomy, which if associated with lesser income in older adults, hinders timely access to health benefits and its possibility to face disability appropriately. The consequences of hearing loss in the elderly are manifested in problems of speech comprehension, cognitive deterioration, and mental health disorders such as anxiety and depression. Unfortunately, interventions to increase user adherence to hearing aid use have not shown many positive results. A correct diagnosis allows to have an adequate orientation and rehabilitation through the generation of programs and strategies focused on social integration, allowing the quality of life to be maintained or improved not only in people with hearing loss. Implementing an approach that seeks to have a positive impact on adherence to hearing aid use should include and develop auditory rehabilitation programs that consider contextual aspects such as housing, support network and social integration, among others.

More than a century of cytogenetic studies in Chilean plants: how much have we progressed? / Más de un siglo de estudios citogenéticos en plantas Chilenas: ¿cuánto hemos progresado?

ABSTRACT An overview is provided on the cytogenetic of Chilean plants, highlighting information gathered from more than a century of work carried out by foreign and national researchers who have contributed to the study of native species. We briefly present the progress made to date and also emphasize some strategies that, in our opinion, could spur further advances in this second century of cytogenetic studies in Chilean plants.

RESUMEN Se presenta una visión general de la citogenética de plantas chilenas, destacando información recopilada durante más de un siglo de trabajo realizado por investigadores nacionales y extranjeros que han contribuido al estudio de las especies nativas. Presentamos brevemente los progresos realizados hasta la fecha y también destacamos algunas estrategias que, en nuestra opinión, podrían impulsar mayores avances en este segundo siglo de estudios citogenéticos en plantas chilenas.

Grade of sedation in the critically ill paediatric patient and its correlation with sociodemographic and clinical variables. Multicentre COSAIP study. / Grado de sedación del paciente crítico pediátrico y variables sociodemográficas y clínicas correlacionadas. Estudio multicéntrico COSAIP.

AIMS: To determine the grade of sedation in the critically ill paediatric patient using Biespectral Index Sensor (BIS) and to analyse its relationship with sociodemographic and clinical patient variables. METHODS: Observational, analytical, cross-sectional and multicentre study performed from May 2018 to January 2020 in 5 Spanish paediatric critical care units. Sex, age, reason for admission, presence of a chronic pathology, type and number of drugs and length of stay were the sociodemographic and clinical variables registered. Furthermore, the grade of sedation was assessed using BIS, 11per shift over 24hours. RESULTS: A total of 261 paediatric patients, 53.64% of whom were male, with a median age of 1.61 years (0.35-6.55), were included in the study. Of the patients, 70.11% (n=183) were under analgosedation and monitored using the BIS sensor. A median of BIS values of 51.24±14.96 during the morning and 50.75±15.55 during the night were observed. When comparing BIS values and sociodemographic and clinical paediatric variables no statistical significance was detected. CONCLUSIONS: Despite the limitations of the BIS, investigations and the present study show that BIS could be a useful instrument to assess grade of sedation in critically ill paediatric patients. However, further investigations which determine the sociodemographic and clinical variables involved in the grade of paediatric analgosedation, as well as studies that contrast the efficacy of clinical scales like the COMFORT Behaviour Scale-Spanish version, are required.

Near-Complete Genome Sequence of a SARS-CoV-2 VOC 202012/01 Strain in Peru.

A near-complete genome sequence was obtained for a novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variant of concern (VOC) 202012/01 strain obtained from an oropharyngeal swab sample from a Peruvian patient with coronavirus syndrome who had contact with an individual who had recently returned from England.

Adherencia al uso de audífonos en adultos mayores con hipoacusia: Un ensayo clínico aleatorizado para evaluar un programa de rehabilitación auditiva

Resumen Introducción: La presbiacusia es una condición muy prevalente. Habitualmente se implementan audífonos como tratamiento, pero un problema es la baja adherencia exhibida que puede rondar un 50%. Objetivo: Evaluar si el programa de rehabilitación auditiva Active Communication Education (ACE) mejora la adherencia al uso del audífono. Material y Método: Se realizó un ensayo clínico aleatorizado controlado para evaluar la efectividad del programa ACE sumado a un refuerzo teleeducativo para mejorar la adherencia al uso del audífono. El proyecto fue aprobado por comité de ética y cada participante firmó consentimiento informado. La adherencia se evaluó por medio de la escala CIRUA y Dr. Yueh. Cada participante fue seguido en su domicilio en controles cada 3 meses hasta 1 año posterior a la intervención por encuestadores entrenados. Resultados: Se incluyeron 202 participantes, 101 en cada rama. La mediana de edad fue de 78 años y el 59,9% de la muestra fue de sexo femenino. El PTP promedio óseo fue de 48,59 dB y el aéreo fue de 55 dB. El grupo control tuvo adherencia de 65,91% y 62,30%. El grupo intervencional tuvo una adherencia de 78,41% y 72,28%. Hubo diferencias significativas en el porcentaje de adherencia entre grupo control y experimental según CIRUA (p = 0,027) y Yueh (p = 0,011). Conclusión: El programa de rehabilitación auditiva ACE es eficaz para mejorar la adherencia al uso del audífono en pacientes adultos mayores con hipoacusia. Este estudio representa uno de los mayores esfuerzos publicados para evaluar la efectividad de los programas de rehabilitación auditiva en adultos mayores con hipoacusia.

Abstract Introduction: Hearing loss associated with older adults is a very prevalent condition. Hearing aids are usually implemented as treatment, but there is low adherence exhibited, which can be around 50%. Aim: To assess whether the Active Communication Education (ACE) hearing rehabilitation program improves adherence to hearing aid use. Material and Method: A randomized controlled clinical trial was carried out to evaluate the effectiveness of the ACE program added to a tele-educational reinforcement to improve adherence to hearing aid use. The project was approved by the ethics committee of the institution and each participant signed an informed consent. Adherence was evaluated using the CIRUA scale and Dr. Yueh scale. Each participant was followed at home in controls every 3 months up to 1 year after the intervention by trained interviewers. Results: 202 participants were included, 101 in each branch. The median age was 78 years and 59.9% of the sample was female. The average bone PTA was 48.59 dB and air PTA was 55 dB. Adherence in the control group was 65.91% and 62.30%. In the interventional group, adherence was 78.41% and 72.28%. There were significant differences in the percentage of adherence between the control and experimental groups according to CIRUA (p = 0.027) and Yueh (p = 0.011). Conclusion: The ACE auditory rehabilitation program improves adherence to hearing aid use in older adults with hearing loss. This study represents one of the largest published efforts to evaluate the effectiveness of auditory rehabilitation programs in older adults with hearing loss.