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RESUMEN Introducción: La cirugía de Whipple, también conocida como duodenopancreatectomía cefálica (DPC), es un procedimiento muy usado para varios tipos de cáncer peri ampular. Objetivos: Establecer los factores asociados a la evolución con complicaciones post DPC en el Servicio de Cirugía de Páncreas del Hospital Nacional Edgardo Rebagliati Martins en Lima, Perú. Métodos: Se realizó un estudio observacional, cuantitativo, analítico, transversal y retrospectivo en 81 pacientes durante el período comprendido entre enero de 2017 hasta diciembre de 2019, quienes fueron sometidos a una DPC. La variable dependiente fueron las complicaciones postquirúrgicas y las independientes fueron indicadores preoperatorios, perioperatorios y post operatorios. Se revisaron las historias clínicas. Se realizó regresión logística para hallar los OR crudos y ajustados. Resultados: La media de la edad fue 65,97±10,14 y el sexo más frecuente fue el masculino. La complicación más frecuente fue la fístula pancreática (34,6%). Los factores asociados a complicaciones post DPC fueron el sexo masculino (ORa: 4,46, IC95%: 1,35-14,77), ampuloma (ORa: 6,92, IC95%: 1,75-27,48) y la consistencia blanda del páncreas (ORa: 4,52, IC95%: 0,07-0,58). Conclusiones: Los factores asociados a complicaciones en la evolución post DPC fueron el sexo masculino, el ampuloma, y la consistencia blanda del páncreas.

ABSTRACT Introduction: Whipple procedure, also known as pancreatoduodenectomy (PD), is a widely used procedure for several types of peri-ampullary cancer. Objectives: To establish the factors associated with postoperative complications after PD in the Pancreas Surgery Service of the Edgardo Rebagliati Martins National Hospital in Lima, Peru. Methods: An observational, quantitative, analytical, cross-sectional, and retrospective study was carried out on 81 patients during the period from January 2017 to December 2019, who underwent PD. The dependent variable was postoperative complications and the independent variables were preoperative, perioperative, and postoperative variables. The medical records were reviewed. Logistic regression was performed to find the crude and adjusted ORs. Results: The mean age was 65.97±10.14 and the majority of patients were male. The most common postoperative complication was pancreatic fistula (34.6%). Factors associated with postoperative complications after PD were male sex (aOR: 4.46, 95% CI: 1.35-14.77), ampullary cancer (aOR: 6.92, 95% CI: 1.75-27.48), and soft consistency of the pancreas (aOR: 4.52, 95% CI: 0.07-0.58). Conclusions: The factors associated with postoperative complications after PD were male sex, ampulloma, and soft consistency of the pancreas.

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COVID-19 is a disease caused by the novel Coronavirus SARS-CoV-2 causing an acute respiratory disease that can eventually lead to severe acute respiratory syndrome (SARS). An exacerbated inflammatory response is characteristic of SARS-CoV-2 infection, which leads to a cytokine release syndrome also known as cytokine storm associated with the severity of the disease. Considering the importance of this event in the immunopathology of COVID-19, this study analyses cytokine levels of hospitalized patients to identify cytokine profiles associated with severity and mortality. Using a machine learning approach, 3 clusters of COVID-19 hospitalized patients were created based on their cytokine profile. Significant differences in the mortality rate were found among the clusters, associated to different CXCL10/IL-38 ratio. The balance of a CXCL10 induced inflammation with an appropriate immune regulation mediated by the anti-inflammatory cytokine IL-38 appears to generate the adequate immune context to overrule SARS-CoV-2 infection without creating a harmful inflammatory reaction. This study supports the concept that analyzing a single cytokine is insufficient to determine the outcome of a complex disease such as COVID-19, and different strategies incorporating bioinformatic analyses considering a broader immune profile represent a more robust alternative to predict the outcome of hospitalized patients with SARS-CoV-2 infection.

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Las talasemias son desórdenes autosómicos recesivos de las cadenas de hemoglobina que poseen expresión clínica variable según el tipo de mutación o deleción. Presentamos el caso de dos jóvenes mujeres costarricenses no relacionadas entre sí y ambas diagnosticadas con la mutación común en el codón 39 (C>T) (β0) en combinación con la deleción siciliana (δβ0) 13.4 kb. La caracterización de doble heterocigota no había sido descrita antes en la literatura médica, y discutimos el significado de este genotipo que causa un defecto tipo β0 talasemia transfusión dependiente.

Thalassemia are autosomal recessive disorders of hemoglobin chains with variable clinical expression depending on the type of mutation or deletion present. We present the common codon 39(C>T) (β0) in combination with the δβ0 13.4 kb Sicilian deletion in two non-related young women from Costa Rica. We report the characterization of the compound heterozygous not previously described phenotype, and discuss the significance of this genotype combination with a transfusion dependent β0 defect Thalassemia.

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Three-dimensional printing (3DP) has recently gained importance in the medical industry, especially in surgical specialties. It uses different techniques and materials based on patients' needs, which allows bioprofessionals to design and develop unique pieces using medical imaging provided by computed tomography (CT) and magnetic resonance imaging (MRI). Therefore, the Department of Biology and Medicine and the Department of Physics and Engineering, at the Bioastronautics and Space Mechatronics Research Group, have managed and supervised an international cooperation study, in order to present a general review of the innovative surgical applications, focused on anatomical systems, such as the nervous and craniofacial system, cardiovascular system, digestive system, genitourinary system, and musculoskeletal system. Finally, the integration with augmented, mixed, virtual reality is analyzed to show the advantages of personalized treatments, taking into account the improvements for preoperative, intraoperative planning, and medical training. Also, this article explores the creation of devices and tools for space surgery to get better outcomes under changing gravity conditions.

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Resumen Introducción: los estudiantes universitarios muchas veces realizan su alimentación en comederos ambulantes, lo que puede ser causa de sintomatología digestiva, pero esto no se ha evidenciado en estudios en dicha población. Objetivo: determinar si el consumo de alimentos en comederos ambulantes está asociado con síntomas dispépticos en los estudiantes de medicina peruanos. Material y métodos: se realizó un estudio multicéntrico de datos secundarios, del encuestado de 1797 estudiantes de medicina en ocho facultades de medicina, se calculó una potencia estadística del 93 %. El padecimiento de síntomas dispépticos se asoció con el antecedente de consumo de alimentos en comederos ambulantes. Se obtuvo estadísticas de asociación con modelos bivariados y multivariados. Resultados: El rango de dispepsia funcional varió entre el 9 % y el 28 % y el de consumo de alimentos en comederos ambulantes, entre 1 % y 5 %. En el análisis multivariado, consumir alimentos en comederos ambulantes era un factor asociado con la mayor frecuencia de padecer dispepsia funcional (razón de prevalencia ajustada [RPa]: 1,45; intervalo de confianza [IC] 95 %: 1,09-1,94; p = 0,010); además, otras variables que resultaron significativas fueron el sexo femenino (RPa: 1,40; IC 95 %: 1,15-1,71; p = 0,001) y los que comían en horarios similares (RPa: 0,76; IC 95 %: 0,61-0,94; p = 0,012), ajustadas por la edad y el semestre académico que cursaban. Conclusiones: Los estudiantes que consumían sus alimentos en comederos ambulantes tenían mayor frecuencia de padecer síntomas dispépticos, esto debe ser vigilado por las autoridades sanitarias y universitarias, ya que puede generar repercusiones a corto y largo plazo.

Abstract Introduction: University students often eat at street food stalls, which can cause various digestive symptoms, although this has not been evidenced in studies carried out in this population. Objective: To establish whether food consumption in street food stalls is associated with symptoms of dyspepsia in Peruvian medical students. Materials and methods: A secondary data analysis of a multicenter study was conducted. Of 1 797 medical students surveyed in eight medical schools, a statistical power of 93% was calculated. Symptoms of dyspepsia were associated with a history of food consumption in street food stalls. Association statistics were obtained with bivariate and multivariate models. Results: The prevalence of functional dyspepsia varied between 9-28% and food consumption in street stalls between 1-5%. In the multivariate analysis, eating food in the street was a factor associated with a greater frequency of suffering from functional dyspepsia (aPR: 1.45; 95%CI: 1.09-1.94; p=0.010). In addition, other significant variables were the female sex (aPR: 1.40; 95%CI: 1.15-1.71 p=0.001) and people eating at similar times (aPR: 0.76; 95%CI: 0.61-0.94; p=0.012) adjusted for age, and academic term. Conclusions: Dyspepsia symptoms were more common in students who ate their food from street stalls. This should be monitored by health and university authorities, as it can have short- and long-term consequences.

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BACKGROUND: Next generation sequencing (NGS) technologies have improved the study of hereditary diseases. Since the evaluation of bioinformatics pipelines is not straightforward, NGS demands effective strategies to analyze data that is of paramount relevance for decision making under a clinical scenario. According to the benchmarking framework of the Global Alliance for Genomics and Health (GA4GH), we implemented a new simple and user-friendly set-theory based method to assess variant callers using a gold standard variant set and high confidence regions. As model, we used TruSight Cardio kit sequencing data of the reference genome NA12878. This targeted sequencing kit is used to identify variants in key genes related to Inherited Cardiac Conditions (ICCs), a group of cardiovascular diseases with high rates of morbidity and mortality. RESULTS: We implemented and compared three variant calling pipelines (Isaac, Freebayes, and VarScan). Performance metrics using our set-theory approach showed high-resolution pipelines and revealed: (1) a perfect recall of 1.000 for all three pipelines, (2) very high precision values, i.e. 0.987 for Freebayes, 0.928 for VarScan, and 1.000 for Isaac, when compared with the reference material, and (3) a ROC curve analysis with AUC > 0.94 for all cases. Moreover, significant differences were obtained between the three pipelines. In general, results indicate that the three pipelines were able to recognize the expected variants in the gold standard data set. CONCLUSIONS: Our set-theory approach to calculate metrics was able to identify the expected ICCs related variants by the three selected pipelines, but results were completely dependent on the algorithms. We emphasize the importance to assess pipelines using gold standard materials to achieve the most reliable results for clinical application.

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Resumen Introducción: Las mujeres en edad reproductiva podrían considerarse como una población vulnerable a contraer la infección por VIH. La relación entre conocimiento y prácticas no está descrita en un contexto donde los conocimientos, actitudes y prácticas sobre el VIH son inadecuados. Objetivo: Determinar la asociación entre conocimientos y prácticas sobre la infección por VIH en mujeres peruanas en edad reproductiva. Material y Métodos: Análisis de Encuesta Demográfica y de Salud Familiar 2019, cuya muestra fue probabilística, estratificada y bietápica. El análisis consideró a mujeres en edad reproductiva sexualmente activas. Se definió "conocimientos adecuados" a los puntajes superiores al tercil superior de las observaciones al responder 18 preguntas y se determinó la asociación con cada una de las cinco prácticas. Se utilizó estadística descriptiva e inferencial -bivariada y multivariada- con regresión de Poisson para análisis poblacionales. Resultados: La media de respuestas correctas fue 12,6 (IC95%: 12,5-12,7). El 19,2% había usado preservativo en su última relación sexual. Un nivel de conocimientos adecuado estuvo asociado al uso de preservativo en la última relación sexual (RPa: 1,20; IC95%: 1,06-1,36), haber tenido una infección de transmisión sexual y con haberse realizado una prueba diagnóstica para infección por VIH. Conclusiones: Considerando una baja prevalencia de uso de preservativo en la última relación sexual de mujeres peruanas en edad reproductiva, los conocimientos generales adecuados sobre la infección por VIH se asocian con haber realizado esta práctica.

Abstract Background: Reproductive-age women are a vulnerable population for HIV infection. The relationship between knowledge and practices is not well described in a context where levels of knowledge, attitudes, and practices about HIV infection are inadequate. Aim: To determine the association between knowledge and practices about HIV infection in Peruvian reproductive-age women. Methods: Analysis of secondary data from the 2019 Demographic and Family Health Survey. It got a probabilistic, stratified, and two-stage sample. We included reproductive-age and actively sexual women. Scores above the upper tertile of the observations were defined as "adequate knowledge" by answering 18 questions. Then, we determined the association between adequate knowledge with each of the five practices. Descriptive and inferential statistics -bivariate and multivariate- were used with the Poisson regression for survey analysis. Results: The mean of correct answers was 12.6 (95% CI: 12.5 - 12.7). 19.2% of Peruvian women had used a condom in the last sexual relationship. An adequate level of knowledge was associated with the use of condoms in the last sexual intercourse (PRa: 1.20; 95% CI:1.06 - 1.36), with having a sexually transmitted infection in the last year, and with having a diagnostic test for HIV infection. Conclusions: Considering a low prevalence of condom use in the last sexual intercourse of Peruvian women of reproductive age, adequate general knowledge about HIV infection has associated with the accomplishment of this practice.

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En la situación actual de propagación a gran escala del COVID-19, mientras aumenta el contagio, el papel de los robots (diseñados con tecnología de Teleoperación e Inteligencia Artificial) en la sociedad se vuelve fundamental, pues necesitan ser utilizados en entornos hospitalarios, entornos urbanos, y también utilizar la consultoría de Telemedicina para tener acceso a todas las comunidades del mundo, a fin de evitar la propagación del virus. Además, se podría promover el trabajo multidisciplinario, entre la ingeniería y las ciencias de la salud en el Continente Americano y a nivel mundial, a través de proyectos de investigación, desarrollo e innovación en Ingeniería Biomédica, con la propuesta de estar preparados para enfrentar una emergencia global y nacional como la actual Pandemia. causado por el SARS-CoV-2.

In the current situation of the large-scale spread of COVID-19, whereas contagion increases, the role of robots (designed with Teleoperation and Artificial Intelligence technology) in society becomes essential, because they need to be used in hospital settings, urban environment, and also using Telemedicine consultancy to have access to all communities in the world, in order to avoid the spread of the virus. In addition, multidisciplinary work could be promoted, among the engineering and health sciences in the American Continent and Worldwide, through research, development and innovation projects in Biomedical Engineering, with the proposal of being ready to face a global and national emergency like the current Pandemic caused by SARS-CoV-2.

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BACKGROUND: Reproductive-age women are a vulnerable population for HIV infection. The relationship between knowledge and practices is not well described in a context where levels of knowledge, attitudes, and practices about HIV infection are inadequate. AIM: To determine the association between knowledge and practices about HIV infection in Peruvian reproductive-age women. METHODS: Analysis of secondary data from the 2019 Demographic and Family Health Survey. It got a probabilistic, stratified, and two-stage sample. We included reproductive-age and actively sexual women. Scores above the upper tertile of the observations were defined as "adequate knowledge" by answering 18 questions. Then, we determined the association between adequate knowledge with each of the five practices. Descriptive and inferential statistics -bivariate and multivariate- were used with the Poisson regression for survey analysis. RESULTS: The mean of correct answers was 12.6 (95% CI: 12.5 - 12.7). 19.2% of Peruvian women had used a condom in the last sexual relationship. An adequate level of knowledge was associated with the use of condoms in the last sexual intercourse (PRa: 1.20; 95% CI:1.06 - 1.36), with having a sexually transmitted infection in the last year, and with having a diagnostic test for HIV infection. CONCLUSIONS: Considering a low prevalence of condom use in the last sexual intercourse of Peruvian women of reproductive age, adequate general knowledge about HIV infection has associated with the accomplishment of this practice.

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