Outcomes after septal myectomy in a cohort of patients with hypertrophic cardiomyopathy.

Hypertrophic cardiomyopathy (HCM) with left ventricular outflow tract obstruction that doesn't improve with pharmacological management often requires septal myectomy. However, there are few centers with experience in the practice of this procedure in our country. We describe the clinical and echocardiographic characteristics and postoperative outcomes of patients with HCM indicated for septal myectomy at a reference center in Colombia. MATERIALS AND METHODS: Retrospective cohort study. Patients undergoing septal myectomy between 2010 and 2023 were included. Data were collected before and two years after surgery. RESULTS: 18 patients were included. The mean age was 50 years. The predominant functional class was NYHA II/III (94 %). Asymmetric septal variant (83.3 %) was the most frequent as well as obstructive phenotype (88.8 %). After myectomy, 70.5 % improved to NYHA I and 62.4 % had no significant gradient (<30 mmHg), and the most of patient improved SAM. One patient died post-procedure, anymore complications were presented. DISCUSSION/CONCLUSIONS: Septal myectomy is a safe procedure, with clinical and echocardiographic improvement, with low complication rates.

Efectividad de los protocolos de fisioterapia para pacientes con dolor lumbar crónico. Una revisión sistemática / Effectiveness of physiotherapy protocols for patients with chronic low back pain: A systematic review

Introducción: El dolor lumbar crónico es una de las principales causas de incapacidad laboral en el mundo. Requiere un abordaje interdisciplinario para la evolución del paciente. Hasta el momento, no existe consenso en el manejo del dolor lumbar crónico, lo que generó la inquietud de esta revisión sistemática. Objetivo: Identificar la efectividad de los protocolos de fisioterapia en el manejo del dolor lumbar crónico. Metodología: Se realizó una búsqueda sistemática en las bases de datos Pubmed, ScienceDirect, Scopus, Oxford, Wiley, Cochrane Library Plus, PEDro, Epistemonikos, Hinari y LILACS, Google Scholar, Teseo y PROSPERO, desde el inicio de las bases hasta agosto de 2021. Los criterios de selección se definieron según la intervención y el tema del artículo. Resultados: Se incluyeron 26 estudios en la síntesis cualitativa, se excluyeron artículos que no cumplieran con los criterios de inclusión. Se encontró efecto en el control del dolor y la disminución de la discapacidad y las principales intervenciones son: fortalecimiento muscular del Core y miembros inferiores, estiramiento de miembros inferiores, movilidad lumbopélvica y educación o escuela de espalda. La frecuencia en el tratamiento osciló entre 2 y 3 veces por semana durante 5 semanas. Conclusiones: Se encontró mayor efectividad en el tiempo de control del dolor y la disminución de la discapacidad, relacionados principalmente con el fortalecimiento muscular del Core y las estrategias educativas.(AU)

Introduction: Chronic low back pain is one of the main causes of incapacity for work in the world. It requires an interdisciplinary approach for the evolution of the patient. Until now, there is no consensus on the management of chronic low back pain, which generated the concern of this systematic review. Aim: To identify the effectiveness of physiotherapy protocols in the management of chronic low back pain. Methodology: A systematic search was carried out in the Pubmed, ScienceDirect, Scopus, Oxford, Wiley, Cochrane Library Plus, PEDro, Epistemonikos, Hinari and LILACS, Google Scholar, Teseo and PROSPERO databases, from the beginning of the databases until August, 2021. The selection criteria were defined according to the intervention and topic of the article. Results: Twenty-six studies were included in the qualitative synthesis, articles that did not meet the inclusion criteria were excluded. An effect was found in the control of pain and the reduction of disability and the main interventions are: muscular strengthening of the core and lower limbs, stretching of the lower limbs, lumbopelvic mobility and education or back school. The treatment frequency ranged from 2 to 3 times per week for 5 weeks. Conclusions: Greater effectiveness was found in pain control time and disability reduction, mainly related to core muscle strengthening and educational strategies.(AU)

Alcaptonuria: evolución y curso de la enfermedad hacia artropatía ocronótica. Serie de casos manejados con reemplazo articular / Alkaptonuria: evolution and course of the disease towards ochronotic arthropathy. Series of cases managed with joint replacement

Resumen: Introducción: la alcaptonuria es una enfermedad metabólica inusual, de herencia autosómica recesiva dada por la deficiencia de la oxidasa de HGA. Clásicamente descrita y diagnosticada sobre la tercera a cuarta década de la vida, la cual tiene afectación en ambos sexos, su impresión diagnóstica es clínica, basándose en la coloración azul/negro de las conjuntivas; sin embargo, se confirma mediante el análisis específico de la enzima en la orina, actualmente no existe un tratamiento definitivo, sólo alternativas en cuanto a lo paliativo y sintomático. Material y métodos: estudio descriptivo, observacional, de tipo serie de casos, como objetivo primario se describe la progresión de la enfermedad y su compromiso en el sistema musculoesquelético. Resultados: se presentan dos casos clínicos en mujer y hombre, los cuales ilustran: variedad clínica, avance progresivo y las alteraciones que puede generar en el sistema musculoesquelético. Conclusiones: la alcaptonuria es una enfermedad rara, la cual conlleva una artropatía secundaria severa, sin un tratamiento definitivo dirigido a tratar los síntomas, incluso en sus estadios finales los reemplazos articulares son una opción para proporcionar manejo del dolor obteniendo resultados satisfactorios.

Abstract: Introduction: alkaptonuria is a very rare metabolic disease with autosomal recessive inheritance due to HGA oxidase deficiency. Classically described and diagnosed in the third to fourth decade of life, affecting both men and women; Its diagnostic impression is clinical based on the blue/black coloration of the conjunctivae, however it is confirmed by the specific analysis of the enzyme in the urine, to date there is no cure and its treatment is palliative and symptomatic. Material and methods: descriptive, observational, case series study, the primary objective of which is to describe the progression of the disease and its involvement in the musculoskeletal system. Results: two clinical cases are presented in women and men in which the broad clinic is illustrated, its progressive advance and the different alterations that it can generate in the musculoskeletal system. Conclusions: alkaptonuria is a rare disease which leads to a severe secondary arthropathy, currently without a specific management which is based on treating the symptoms, in its final stages joint replacements are a management option with satisfactory results for the relief of pain.

[Alkaptonuria: evolution and course of the disease towards ochronotic arthropathy. Series of cases managed with joint replacement]. / Alcaptonuria: evolución y curso de la enfermedad hacia artropatía ocronótica. Serie de casos manejados con reemplazo articular.

INTRODUCTION: alkaptonuria is a very rare metabolic disease with autosomal recessive inheritance due to HGA oxidase deficiency. Classically described and diagnosed in the third to fourth decade of life, affecting both men and women; Its diagnostic impression is clinical based on the blue/black coloration of the conjunctivae, however it is confirmed by the specific analysis of the enzyme in the urine, to date there is no cure and its treatment is palliative and symptomatic. MATERIAL AND METHODS: descriptive, observational, case series study, the primary objective of which is to describe the progression of the disease and its involvement in the musculoskeletal system. RESULTS: two clinical cases are presented in women and men in which the broad clinic is illustrated, its progressive advance and the different alterations that it can generate in the musculoskeletal system. CONCLUSIONS: alkaptonuria is a rare disease which leads to a severe secondary arthropathy, currently without a specific management which is based on treating the symptoms, in its final stages joint replacements are a management option with satisfactory results for the relief of pain.

INTRODUCCIÓN: la alcaptonuria es una enfermedad metabólica inusual, de herencia autosómica recesiva dada por la deficiencia de la oxidasa de HGA. Clásicamente descrita y diagnosticada sobre la tercera a cuarta década de la vida, la cual tiene afectación en ambos sexos, su impresión diagnóstica es clínica, basándose en la coloración azul/negro de las conjuntivas; sin embargo, se confirma mediante el análisis específico de la enzima en la orina, actualmente no existe un tratamiento definitivo, sólo alternativas en cuanto a lo paliativo y sintomático. MATERIAL Y MÉTODOS: estudio descriptivo, observacional, de tipo serie de casos, como objetivo primario se describe la progresión de la enfermedad y su compromiso en el sistema musculoesquelético. RESULTADOS: se presentan dos casos clínicos en mujer y hombre, los cuales ilustran: variedad clínica, avance progresivo y las alteraciones que puede generar en el sistema musculoesquelético. CONCLUSIONES: la alcaptonuria es una enfermedad rara, la cual conlleva una artropatía secundaria severa, sin un tratamiento definitivo dirigido a tratar los síntomas, incluso en sus estadios finales los reemplazos articulares son una opción para proporcionar manejo del dolor obteniendo resultados satisfactorios.

When to use a prophylactic mesh after stoma closure: a case-control study.

PURPOSE: The closure of a stoma is frequently associated with an acceptable morbidity and mortality. One of the most frequent complications is incisional hernia at the stoma site, which occurs in 20%-40% of cases, higher than incisions in other parts of the abdomen. The objective of this study was to identify the risk factors associated with the presentation of incisional hernia after stoma closure, this in order to select patients who are candidates for prophylactic mesh placement during closure. METHODS: An unpaired case-control study was conducted. This study involved 164 patients who underwent a stoma closure between January 2014 and December 2019. Associated factors for the development of incisional hernia at the site of the stoma after closure were identified, for which it was performed a logistic regression analysis. RESULTS: 41 cases and 123 controls were analyzed, with a mean follow-up of 35.21 ± 18.42 months, the mean age for performing the stoma closure was 65.28 ± 14.07 years, the most frequent cause for performing the stoma was malignant disease (65.85%). Risk factor for the development of incisional hernia at the stoma site after its closure was identified as a history of parastomal hernia (OR 5.90, CI95% 1.97-17.68). CONCLUSIONS: The use of prophylactic mesh at stoma closure should be considered in patients with a history of parastomal hernia since these patients present a significantly higher risk of developing a hernia.

Cholelithiasis and associated complications in pediatric patients. / Colelitiasis y complicaciones asociadas en pacientes pediátricos.

OBJECTIVE: To review the clinical characteristics and complications associated with cholelithiasis in pediatric patients by identifying risk factors and assessing surgical management and results. METHODS: Retrospective study in patients under 18 years of age undergoing cholelithiasis surgery. The following data were analyzed: age, sex, body mass index (BMI), associated comorbidities, clinical presentation, symptom duration, surgical treatment, pathological report, postoperative complications, and hospital stay. RESULTS: 135 cholelithiasis patients underwent surgery from 2013 to 2018, with an increasing trend in the annual number of cholecystectomies. Most patients were adolescents (86.7%) and female (72.6%), and they had cholesterol gallstones (86.6%) and >85 BMI (33%). Mean symptom duration was 85 days (SD: 148). Symptomatic cholelithiasis was present in 131 cases (97%). CL associated complications were recorded in 64.4% of patients, with cholecystitis, pancreatitis, and choledocholithiasis being the most frequent ones. All patients underwent laparoscopic cholecystectomy; 4 (2.9%) required conversion to open surgery, and 6 (4.4%) had postoperative complications. Mean hospital stay and postoperative follow-up were 5.7 days (SD: 4) and 2.3 months (SD: 1.9), respectively. CONCLUSIONS: Non-hemolytic cholelithiasis in the pediatric population is more frequent in female overweight and obese adolescents. Symptomatic cholelithiasis is associated with higher risk of complications such as cholecystitis, pancreatitis, or choledocholithiasis, which supports early surgical management.

OBJETIVO: Revisión de las características clínicas y complicaciones asociadas de los pacientes pediátricos con colelitiasis, mediante la identificación de factores de riesgo, la evaluación del manejo quirúrgico y sus resultados. METODOS: Estudio retrospectivo en pacientes menores de 18 años, intervenidos quirúrgicamente por colelitiasis. Se analizaron datos como edad, género, índice de masa corporal (IMC), comorbilidades asociadas, presentación clínica, tiempo de los síntomas, tratamiento quirúrgico, reporte de patología, complicaciones posoperatorias y estancia hospitalaria. RESULTADOS: Se intervinieron quirúrgicamente 135 pacientes con colelitiasis entre los años 2013 a 2018, con una tendencia ascendente en el número de colecistectomías realizadas anualmente. La mayoría fueron pacientes adolescentes (86,7%), con cálculos de colesterol (86,6%), de género femenino (72,6%) y con IMC > 85 (33%). El tiempo de los síntomas en promedio fue de 85 días (DE 148). Colelitiasis sintomática se presentó en 131 casos (97%). Complicaciones asociadas a CL se registraron en 64,4% pacientes, siendo las más frecuentes colecistitis, pancreatitis y coledocolitiasis. En todos los pacientes se realizó colecistectomía laparoscópica, 4 (2,9%) requirieron conversión a cirugía abierta y 6 (4,4%) presentaron complicaciones postoperatorias. La estancia hospitalaria y el seguimiento posoperatorio fueron en promedio 5,7 días (DE 4) y 2,3 meses (DE 1,9), respectivamentea. CONCLUSIONES: La colelitiasis no hemolítica en la población pediátrica, es más frecuente en pacientes adolescentes de género femenino con sobrepeso u obesidad. La colelitiasis sintomática está asociada con mayor riesgo de complicaciones como colecistitis, pancreatitis o coledocolitiasis, en consecuencia, se justifica una intervención quirúrgica temprana.

Predictores de hospitalización prolongada en pacientes con insuficiencia cardiaca aguda / Predictors of prolonged hospital stay in patients with acute heart failure

Resumen Introducción: la insuficiencia cardiaca aguda es la principal causa de hospitalización en adultos mayores de 65 años. La duración de las hospitalizaciones es un determinante del incremento en los costos por la atención hospitalaria. Objetivo: describir el perfil clínico de los pacientes hospitalizados por insuficiencia cardiaca aguda en un centro de referencia cardiovascular e identificar la duración de la estancia hospitalaria y los predictores de una hospitalización prolongada. Métodos: estudio observacional analítico, cohorte, prospectivo. Resultados: durante siete meses se incluyeron 251 pacientes con diagnóstico de insuficiencia cardiaca aguda. La mediana de edad fue de 71 años, fracción de eyección del ventrículo izquierdo de 25%, clasificación Nohria-Stevenson: húmedo-caliente 78,9%; húmedo-frío 15,1%; seco-caliente 2,8% y seco-frío 2,8%. El 15,9% de los pacientes requirieron inotrópicos y 1,2% vasopresores. Las complicaciones más frecuentes fueron el desarrollo de enfermedad renal aguda 33,1% y fibrilación auricular de novo 5,2%. La mediana de estancia hospitalaria fue de 5 días y el 65,7% presentó estancia prolongada (≥7 días). El análisis bivariado mostró predictores de estancia prolongada como requerimiento inotrópico (RR 2,41; IC 95% 1,77-3,27 p 0,000), clasificación Nohria-Stevenson seco-frío y húmedo-frío (RR 1,86; I 95%. 1,33-2,61 p 0,001), clasificación NYHA III-IV (RR 1,85; IC 95% 1,06-3,24 p 0,017), enfermedad renal aguda (RR 1,82; IC 95% 1,31-2,55 p 0,000) y diabetes mellitus (RR 1,47; IC 95% 1,05-2,06 p 0,026). Conclusión: en una población con predominio de función cardíaca reducida y múltiples comorbilidades, la mediana de hospitalización por insuficiencia cardiaca aguda fue de 5 días. Se identificaron como predictores de estancia prolongada el soporte inotrópico, la clasificación Nohria-Stevenson seco-frío y húmedo-frío, NYHA III-IV, la enfermedad renal aguda y la diabetes mellitus.

Abstract Introduction: Acute heart failure is the main cause of hospital admission in adults over 65 years-old. The length of the hospital stay is a determining factor in the increase in the costs of hospital care. Objective: To describe the clinical profile of patients admitted to hospital Cardiovascular Reference Centre due to acute heart failure and to determine the duration of the hospital stay and the predictors of prolonged admission. Methods: A prospective, analytical, observational, cohort study. Results: A total of 251 patients with a diagnosis of acute heart failure were admitted during a six-month period. The median age was 75 years, with a mean left ventricle ejection fraction of 25%, and a Nohria-Stevenson classification: wet-hot 78.9%; wet-cold 15.1%; dry-hot 2.8%, and dry-cold 2.8%. Inotropes were required by 15.9% of patients and vasopressors by 1.2%. The most frequent complications were development of acute kidney disease in 33.1%, and de novo atrial fibrillation in 5.2%. The median hospital stay was 5 days, and 65.7% had a prolonged stay (≥7 days). The bivariate analysis showed prolonged stay predictors such as inotrope requirement (RR 2.41; 95% CI; 1.77-3.27, P = .000), a Nohria-Stevenson classification of dry-cold and wet-cold (RR 1.86; 95% CI; 1.33-2.61, P = .001), NYHA classification of III-IV (RR 1.85; 95% CI; 1.06-3.24, P = .017), acute kidney disease (RR 1.82; 95% CI; 1.31-2.55, P = .000), and diabetes mellitus (RR 1.47; 95% CI; 1.05-2.06, P = .026). Conclusion: In a population with a predominance of reduced cardiac function and multiple comorbidities, the median hospital stay due to acute heart failure was 5 days. Predictors of a prolonged stay were identified as inotrope support, a Nohria-Stevenson classification of dry-cold and wet-cold, NYHA III-IV, acute kidney disease, and diabetes mellitus.

[Diagnosis and management in pediatric patients with ovarian masses]. / Diagnóstico y manejo de masas ováricas en pacientes pediátricas.

OBJECTIVE: Review of the diagnosis and management of ovarian masses in children, through the identification of preoperative risk factors of malignancy, the evaluation of surgical management and its results. METHODS: Retrospective study in pediatric patients under 18 years old, managed surgically by ovarian masses. Analyzed data were symptoms, imagining, tumor markers, treatment, outcomes and pathology. The primary endpoint was ovarian malignancy. RESULTS: We identified 54 patients with ovarian masses between 2014 and 2017, of which 49 were benign and 5 malignant; The malignant ovarian masses were significantly larger than the benign, with an average of 19.4 cm vs 6.49 cm (p = 0.0001); had greater solid component in the imaging and positive tumor markers (p = 0.001) and were treated with oophorectomy plus tumor staging surgery. Forty-three patients with benign tumors underwent ovarian preservation surgery. The postoperative follow-up of all the patients was on average 3.4 months (1-25 months) and 20.3% presented pelvic pain associated with alterations of the menstrual cycle in their postoperative control. There are no reports of recurrence or contralateral ovarian tumor. CONCLUSIONS: Large masses with solid components and positive tumor markers were significant predictors of malignancy. Minimally invasive ovarian preserving surgery should be considered as the first treatment option in masses with low risk of malignancy. On the other hand, oophorectomy plus tumor staging surgery should be considered for ovarian tumors with a high risk of malignancy.

OBJETIVO: Revisión del diagnóstico y manejo de las masas ováricas en población infantil, mediante la identificación de factores de riesgo preoperatorios de malignidad, la evaluación del manejo quirúrgico y sus resultados. METODOS: Estudio retrospectivo en pacientes pediátricas menores de 18 años, intervenidas quirúrgicamente por masas ováricas. Se analizaron datos como síntomas, imágenes diagnósticas, marcadores tumorales, tratamiento, resultados y patología. La variable principal fue malignidad ovárica. RESULTADOS: Se identificaron 54 pacientes con masas ováricas entre el año 2014 a 2017, de las cuales 49 fueron benignas y 5 malignas. Las masas ováricas malignas fueron significativamente más grandes que las benignas, con media de 19,4 cm vs 6,49 cm (p = 0,0001); tuvieron mayor componente sólido en los hallazgos imagenológicos y marcadores tumorales positivos (p = 0,001) y fueron tratadas con ooforectomía más cirugía de estadificación tumoral. A 43 pacientes con tumores benignos se les realizó cirugía preservadora de ovario. El seguimiento postoperatorio de todas las pacientes fue en promedio de 3,4 meses (1-25 meses) y el 20,3% presentaron dolor pélvico asociado a alteraciones del ciclo menstrual en su control postoperatorio. No hay reportes de recidiva ni tumor de ovario contralateral. CONCLUSIONES: Masas grandes, con componentes sólidos y marcadores tumorales positivos fueron predictores significativos de malignidad. La cirugía preservadora de ovario por vía mínimamente invasiva debe ser considerada como primera opción de tratamiento en masas con bajo riesgo de malignidad; Por otra parte, la ooforectomía más cirugía de estadificación tumoral, debe ser considerada para los tumores ováricos con alto riesgo de malignidad.

Antibacterial effect of novel biodegradable and bioresorbable PLDA/Mg composites.

Polylactic acid/Mg composites have been recently proposed for biodegradable osteosynthesis devices because, with regards to the neat polymer, they combine an enhanced biocompatibility and bioactivity with better mechanical properties, particularly creep strength. A question still arises about their bacterial behavior. For this purpose, composites of poly-L-D-lactic acid (PLDA) loaded with 1 and 10 wt.% of Mg microparticles were evaluated using Staphylococcus epidermidis, with special emphasis on the study of bacterial adhesion and biofilm formation. During biofilm formation the bacteria viability of the composites decreased up to 65.3% with respect to PLDA. These antibacterial properties do not compromise the cytocompatibility of the material as the composites enhanced the viability of mesenchymal stem cells and their osteogenic commitment. These findings provide an important added value to the biodegradable and biocompatible PLDA/Mg composites for the manufacture of osteosynthesis devices.

In vivo bactericidal efficacy of the Ti6Al4V surface after ultraviolet C treatment.

BACKGROUND: Biomaterial-associated infections are one of the most important complications in orthopedic surgery. The main goal of this study was to demonstrate the in vivo bactericidal effect of ultraviolet (UV) irradiation on Ti6Al4V surfaces. MATERIALS AND METHODS: An experimental model of device-related infections was developed by direct inoculation of Staphylococcus aureus into the canal of both femurs of 34 rats. A UV-irradiated Ti6Al4V pin was press-fit into the canal by retrograde insertion in one femur and the control pin was inserted into the contralateral femur. To assess the efficacy of UV radiation, the mean colony counts after inoculation in the experimental subjects and the control group were compared at different times of sacrifice and at different inoculum doses. RESULTS: At 72 h, the mean colony counts after inoculation in experimental femurs were significantly lower than those of the control group, with a reduction percentage of 76 % (p = 0.041). A similar difference between control and experimental pins was observed at 24 h using an inoculum dose <104 colony-forming units (CFU), for which the reduction percentage was 70.48 % (p = 0.017). CONCLUSION: The irradiated surface of Ti6Al4V is able to reduce early bacterial colonization of Ti6AlV pins located in the medullar channel and in the surrounding femur. The reductions depend on the initial inoculums used to cause infection in the animals and the greatest effects are detected for inoculums <104 CFU. LEVEL OF EVIDENCE: Not applicable.

Características de pacientes ingresados a la unidad de cuidado intensivo neonatal en la Clínica Universidad de La Sabana / Features of patients hospitalized to the newborn intensive care at Clínica Universidad de La Sabana

Introducción: Es pertinente conocer las características de los pacientes que ingresan a las unidades de cuidado intensivo neonatal para que las acciones en salud respondan a sus necesidades particulares. Objetivo: Caracterizar los pacientes que ingresaron a la Unidad de Cuidado Intensivo Neonatal (UCIN) de la Clínica de la Universidad de La Sabana de enero a diciembre del 2012. Materiales y Métodos: estudio retrospectivo con n=206 neonatos que ingresaron a la UCIN de la Clínica Universidad de La Sabana en el 2012, se revisaron las historias clínicas de los pacientes ingresados para identificar sus características, se calcularon frecuencias relativas y absolutas; y para las variables cuantitativas se describieron medidas de tendencia central y dispersión. Resultados: el 56,3% eran hombres, el promedio de edad gestacional de 36,5 semanas (SD 3,3 semanas), el peso promedio fue de 2625,9 g (SD 757,5 g). La mediana de los días de estancia fue de 4 (IQR: 2 a 9). El principal diagnóstico fue ictericia neonatal en (21,8%), el 22% de los pacientes requirieron ventilación mecánica (VM). La media de la edad gestacional y del peso en pacientes con requerimientos de VM fue de 32.7 semanas (SD: 3,7 semanas) y 1883 g (SD: 779 g) respectivamente, comparado con 37,6 semanas (SD: 2,2 semanas) y 2840 g (SD: 601 g) en los que no requirieron VM. Conclusiones: características como bajo peso al nacer, edad gestacional temprana y el uso de surfactante, se asociaron con el requerimiento de VM, adicionalmente la mortalidad calculada fue del 2,8%.

Introduction: It is relevant to know the characteristics of patients who enter to neonatal intensive care units in order to learn how to respond to their specific conditions and which health actions can be applied for their particular needs. Objective: The aim of this study is describe patients admitted at Clinica Universidad de La Sabana (Neonatal Intensive Care -NIC) from January to December 2012. Materials and Methods: Retrospective study with n=206 neonates admitted to the NIC at Clinica Universidad de La Sabana in 2012, medical records of patients admitted were reviewed to identify its characteristics, as well absolute and relative frequencies were calculated. In terms of quantitative variables, they were measured with central tendency and dispersion. Results: 56.3% of patients were men, the average gestational age was 36.5 weeks (SD 3.3 weeks), the average weight was 2625 gr (SD 757.5 gr). The median days of stay was 4 (IQR:2-9). The main diagnosis was neonatal icterus (21.8%); 22% of patient's required mechanical ventilation (MV). The mean gestational age and weight in patients with VM requirements was 32.7 weeks (SD: 3.7 weeks) and 1883 gr (SD: 779 gr) respectively. Contrasted with the gestational age and weight of newborns that not requiring VM was 37.6 weeks (SD 2.2 weeks) and 2840 gr (SD: 601 gr). Conclusions: Low birth weight, early gestational age and the use of surfactant, were associated with the requirement of VM, and the mortality found was 2.8% for the whole cohort.

Eficacia bactericida in vivo del farnesol sobre implantes de Ti6Al4V / In vivo bactericidal efficacy of farnesol on Ti6Al4V implants

Objetivo. Evaluar in vivo la actividad bactericida antiestafilocócica del farnesol sobre superficies de Ti6Al4V. Material y métodos. Se desarrolló un modelo experimental de infecciones en biomateriales inoculando Staphylococcus aureus ATCC 29213 en los fémures de 15 ratas wistar. Seguidamente se insertó una aguja de Ti6Al4V impregnada con farnesol 30 mM en el fémur estudio y una aguja control en el fémur control. Para valorar la eficacia bactericida se compararon las medianas de unidades formadoras de colonias recuperadas después de la inoculación en el grupo estudio y en el grupo control, para diferentes tiempos de eutanasia y tamaño de inóculos. Resultados. La mediana expresada en Log10 de los recuentos de UFC obtenidos en agujas de titanio con farnesol fue de 4,26 y en agujas sin farnesol, controles, fue de 4,86. Esta diferencia, al aplicar la prueba de t de Student para muestras relacionadas, resultó ser estadísticamente significativa (p = 0,001). La reducción mediana obtenida en las agujas con farnesol respecto a las agujas control fue del 74%. Conclusiones. El tratamiento con farnesol de agujas de Ti6Al4V, a una concentración de 30 mM, parece disminuir la tasa de colonización por Staphylococcus aureus en dichas agujas (AU)

Objective. To evaluate the in vivo anti-staphylococcal bactericidal activity of farnesol on Ti6Al4V surfaces. Material and methods. An experimental model of infection in biomaterials was developed by inoculation of Staphylococcus aureus ATCC 29213 into the canal of both femurs of 15 Wistar rats. A Ti6Al4V pin impregnated with 30 mM of farnesol was inserted into study femur, and a Ti6Al4V control was inserted into the control femur. To evaluate the bactericidal efficacy, a comparison was made between the median of the colony forming units recovered after inoculation in the study group and the control group for different times of euthanasia and inoculum size. Results. The median expressed as Log10 CFU counts obtained with farnesol titanium pin was 4.26, and in control group, it was 4.86, which was statistically significant (P=.001) on applying the Student t test for related samples. The median reduction obtained in farnesol pins relative to the control was 74%. Conclusions. Treatment with farnesol 30 mM on Ti6Al4V pins appears to decrease the rate of colonisation by Staphylococcus aureus (AU)

Resultados de una intervención para disminuir prescripciones potencialmente inapropiadas de bloqueadores beta y calcioantagonistas / Results of an intervention to reduce potentially inappropriate prescriptions of beta blockers and calcium channel blockers

Objetivo. Determinar la frecuencia de prescripción simultánea entre bloqueadores beta y calcioantagonistas cardiodepresores, notificar a los responsables de la atención sanitaria el riesgo cardiovascular al que están expuestos esos pacientes y conseguir una reducción en el número de quienes los utilizan. Métodos. Estudio cuasi-experimental, prospectivo, desarrollando una intervención en médicos prescriptores de pacientes mayores de 65 años, tratados entre el 1 de enero y el 30 de julio de 2014, afiliados al Sistema de Salud en 101 ciudades de Colombia. Se identificaron 43.180 pacientes que mensualmente recibían algún bloqueador beta y 14.560 que recibían un calcioantagonista cardiodepresor. Se realizaron intervenciones educativas y se evaluó en los siguientes 3 meses la proporción de suspensión de alguno de los fármacos. Se evaluaron las variables sociodemográficas y farmacológicas. Resultados. Se identificaron 535 pacientes que recibían concomitantemente bloqueadores beta más calcioantagonista cardiodepresor, con edad media 75,8 ± 6,7 años. Tras 66 intervenciones educativas se logró modificación de la terapia en 235 pacientes (43,9% de usuarios). En 209 casos (88,9%) se suspendió uno de los 2 medicamentos, un 11,1% cambió por otros antihipertensivos. Las variables tener más de 85 años (OR: 1,93; IC 95%:1,07-3,50) y recibir comedicación con inhibidores del sistema renina-angiotensina (OR: 2,16; IC 95%: 1,28-3,65) se asociaron con un mayor riesgo de que el responsable de la atención en salud cambiara o suspendiera alguno de los fármacos. Conclusiones. Se logró una positiva adherencia por parte de los prestadores del servicio sanitario a recomendaciones sobre utilización adecuada de bloqueadores beta y calcioantagonistas cardiodepresores. Se deben reforzar programas de intervención de prescripciones inapropiadas que disminuyan potenciales riesgos para los pacientes en tratamiento para enfermedades cardiovasculares (AU)

Objective. To determine the frequency of simultaneous prescription of β-blockers and calcium channel blockers, notify the cardiovascular risk of these patients to the health care professionals in charge of them, and achieve a reduction in the number of those who use them. Methods. Quasi-experimental, prospective study by developing an intervention on medical prescriptions of patients older than 65 years treated between January 1 and July 30, 2014, affiliated to the Health System in 101 cities in Colombia. A total of 43,180 patients received a β-blocker each month, and 14,560 receiving a calcium channel blocker were identified. Educational interventions were performed and an evaluation was made, using sociodemographic and pharmacological variables, on the number of patients that stopped taking any of the two drugs in the following three months. Results. A total of 535 patients, with a mean age 75.8 ± 6.7 years received concomitant β-blockers plus calcium channel blockers. Modification of therapy was achieved in 235 patients (43.9% of users) after 66 educational interventions. In 209 cases (88.9%) one of the two drugs was suspended, and 11.1% changed to other antihypertensive drugs. The variable of being more than 85 years old (OR: 1.93; 95% CI: 1.07-3.50), and receiving concomitant medication with inhibitors of the renin-angiotensin system (OR: 2.16; 95% CI: 1.28-3.65) were associated with increased risk of their doctor changing or stopping the prescription. Conclusions. An improved adherence to recommendations for appropriate use of β-blockers and calcium channel blockers by health service providers was achieved. Intervention programs that reduce potentially inappropriate prescriptions for patients treated for cardiovascular disease should be used more frequently (AU)

In vivo bactericidal efficacy of farnesol on Ti6Al4V implants. / Eficacia bactericida in vivo del farnesol sobre implantes de Ti6Al4V.

OBJECTIVE: To evaluate the in vivo anti-staphylococcal bactericidal activity of farnesol on Ti6Al4V surfaces. MATERIAL AND METHODS: An experimental model of infection in biomaterials was developed by inoculation of Staphylococcus aureus ATCC 29213 into the canal of both femurs of 15 Wistar rats. A Ti6Al4V pin impregnated with 30mM of farnesol was inserted into study femur, and a Ti6Al4V control was inserted into the control femur. To evaluate the bactericidal efficacy, a comparison was made between the median of the colony forming units recovered after inoculation in the study group and the control group for different times of euthanasia and inoculum size. RESULTS: The median expressed as Log10 CFU counts obtained with farnesol titanium pin was 4.26, and in control group, it was 4.86, which was statistically significant (P=.001) on applying the Student t test for related samples. The median reduction obtained in farnesol pins relative to the control was 74%. CONCLUSIONS: Treatment with farnesol 30mM on Ti6Al4V pins appears to decrease the rate of colonisation by Staphylococcus aureus.

[Results of an intervention to reduce potentially inappropriate prescriptions of beta blockers and calcium channel blockers]. / Resultados de una intervención para disminuir prescripciones potencialmente inapropiadas de bloqueadores beta y calcioantagonistas.

OBJECTIVE: To determine the frequency of simultaneous prescription of ß-blockers and calcium channel blockers, notify the cardiovascular risk of these patients to the health care professionals in charge of them, and achieve a reduction in the number of those who use them. METHODS: Quasi-experimental, prospective study by developing an intervention on medical prescriptions of patients older than 65 years treated between January 1 and July 30, 2014, affiliated to the Health System in 101 cities in Colombia. A total of 43,180 patients received a ß-blocker each month, and 14,560 receiving a calcium channel blocker were identified. Educational interventions were performed and an evaluation was made, using sociodemographic and pharmacological variables, on the number of patients that stopped taking any of the two drugs in the following three months. RESULTS: A total of 535 patients, with a mean age 75.8±6.7 years received concomitant ß-blockers plus calcium channel blockers. Modification of therapy was achieved in 235 patients (43.9% of users) after 66 educational interventions. In 209 cases (88.9%) one of the two drugs was suspended, and 11.1% changed to other antihypertensive drugs. The variable of being more than 85 years old (OR: 1.93; 95% CI: 1.07-3.50), and receiving concomitant medication with inhibitors of the renin-angiotensin system (OR: 2.16; 95% CI: 1.28-3.65) were associated with increased risk of their doctor changing or stopping the prescription. CONCLUSIONS: An improved adherence to recommendations for appropriate use of ß-blockers and calcium channel blockers by health service providers was achieved. Intervention programs that reduce potentially inappropriate prescriptions for patients treated for cardiovascular disease should be used more frequently.

Calidad de la prescripción de verapamilo de liberación convencional en pacientes con hipertensión arterial / Quality of conventional release verapamil prescription in patients with arterial hypertension

Objetivo: Algunos estudios han demostrado que el uso de calcioantagonistas como el verapamilo en el manejo de la hipertensión arterial aumentaba la morbimortalidad por eventos coronarios si no se administraba en las indicaciones adecuadas. El objetivo de este estudio fue mejorar la calidad en la administración de verapamilo en pacientes con hipertensión arterial. Métodos: Se planificó identificar a los pacientes que estaban siendo tratados de hipertensión arterial con verapamilo de liberación convencional (VLC) para notificar a los responsables de la atención sanitaria el riesgo cardiovascular al que están expuestos y conseguir una mejora en la prescripción del mismo. Se realizó un estudio cuasiexperimental, prospectivo, antes y después, sin grupo control, en 7.289 pacientes con diagnóstico de hipertensión arterial que estaban en tratamiento con VLC, entre el 1 octubre del 2012 y el 31 diciembre del 2012 en 8 ciudades colombianas a partir de una base de datos de dispensación de medicamentos. Se evaluaron variables sociodemográficas y farmacológicas. Se realizaron 108 intervenciones educativas y se evaluó en los siguientes 3 meses la proporción de suspensión de las prescripciones de VLC. Resultados: La edad media ± desviación estándar de los pacientes fue de 67,9 ± 11,8 años (rango: 26-96 años) y el 70,6% (n = 5.146) eran hombres. Se logró que descontinuaran la terapia con VLC un total de 1.922 pacientes (26,3% de los usuarios). La variable ser tratado en la ciudad de Medellín (OR: 17,6; IC del 95%, 11,949-25,924; p < 0,001) se asoció de manera estadísticamente significativa a cambio de VLC por otro antihipertensivo. Conclusiones: Se encontró una relativa moderada adherencia a las recomendaciones acerca de la utilización correcta de VLC en pacientes hipertensos. Se deben reforzar los programas de intervención de prescripciones inapropiadas que disminuyan potenciales riesgos para los pacientes en las empresas aseguradoras y ciudades donde no se logró el cambio (AU)

Objective: To identify patients who were being treated for hypertension with conventional release verapamil (CRV), and to notify the professional responsible for their health care on cardiovascular risk to which they are exposed and achieve a reduction in the number of patients who are treated with this drug. Methods: A quasi-experimental prospective before and after study without a control group was conducted on 7289 patients diagnosed with hypertension who were on treatment with CRV, between October 1, 2012 and December 31, 2012 in 8 Colombian cities, collected from a database for dispensing medicines. Socio-demographic and pharmacological variables were evaluated. A total of 108 educational interventions were performed on those responsible for their health care, and evaluated within three months with the proportion of suspension of the prescriptions of CRV being evaluated. Multivariate analysis was performed using SPSS 22.0. Results: The mean age of patients was 67.9 ± 11.8 years (range: 26-96 years), of which 70.6% were men. Withdrawal of treatment with CRV was achieved in a total of 1922 patients (26.3% of users), distributed as follows: 1160 (60.4%) were the presentation of 120 mg, while 762 (39.6%) the 80 mg. The variable being treated in the city of Medellin (OR: 17.6; 95% CI: 11.949 to 25.924; P<.01) was statistically significantly associated with the replacement of CRV for another antihypertensive. Conclusions: A relatively moderate adherence to recommendations about the proper use of CRV in hypertensive patients, was found. Intervention programs that reduce inappropriate prescribing of potential risks to patients of insurance companies and cities where the change was not achieved, must be enforced (AU)

[Quality of conventional release verapamil prescription in patients with arterial hypertension]. / Calidad de la prescripción de verapamilo de liberación convencional en pacientes con hipertensión arterial.

OBJECTIVE: To identify patients who were being treated for hypertension with conventional release verapamil (CRV), and to notify the professional responsible for their health care on cardiovascular risk to which they are exposed and achieve a reduction in the number of patients who are treated with this drug. METHODS: A quasi-experimental prospective before and after study without a control group was conducted on 7289 patients diagnosed with hypertension who were on treatment with CRV, between October 1, 2012 and December 31, 2012 in 8 Colombian cities, collected from a database for dispensing medicines. Socio-demographic and pharmacological variables were evaluated. A total of 108 educational interventions were performed on those responsible for their health care, and evaluated within three months with the proportion of suspension of the prescriptions of CRV being evaluated. Multivariate analysis was performed using SPSS 22.0. RESULTS: The mean age of patients was 67.9±11.8 years (range: 26-96 years), of which 70.6% were men. Withdrawal of treatment with CRV was achieved in a total of 1922 patients (26.3% of users), distributed as follows: 1160 (60.4%) were the presentation of 120mg, while 762 (39.6%) the 80mg. The variable being treated in the city of Medellin (OR: 17.6; 95% CI: 11.949 to 25.924; P<.01) was statistically significantly associated with the replacement of CRV for another antihypertensive. CONCLUSIONS: A relatively moderate adherence to recommendations about the proper use of CRV in hypertensive patients, was found. Intervention programs that reduce inappropriate prescribing of potential risks to patients of insurance companies and cities where the change was not achieved, must be enforced.

Bacteriostatic effect of equine pure platelet-rich plasma and other blood products against methicillin-sensitive Staphylococcus aureus. An in vitro study.

OBJECTIVES: 1) To evaluate the bacteriostatic in vitro effect of pure platelet-rich plasma (P-PRP), pure platelet-rich gel (P-PRG), leukocyte-poor gel (LPG), platelet-poor plasma (PPP), and heat inactivated plasma (IP) against methicillin-sensitive Staphylococcus aureus (MSSA) over a period of 24 hours. 2) To determine the degradation of platelet factor-4 (PF-4), transforming growth factor beta 1 (TGF-ß1), and platelet-derived growth factor isoform BB (PDGF-BB) in these equine blood components. 3) To establish correlations between platelet and leukocyte counts, PF-4 concentrations, and MSSA growth. METHODS: Fourteen horses were used. Blood components were obtained by a manual protocol. Every blood component was mixed with MSSA and Müller-Hinton Broth and cultured at 37°C for 24 hours. Samples for the determination of bacterial growth (colony-forming units) and PF-4, TGF-ß1 and PDGF-BB concentrations were taken at one, four, eight, 12 and 24 hours. RESULTS: The bacterial growth was significantly (p = 0.01) inhibited for P-PRP, P-PRG, LPG and PPP in comparison with IP and, the positive control group during the first 12 hours. The P-PRG had higher and sustained TGF-ß1 and PDGF-BB concentrations over time in comparison with the other blood components. CLINICAL SIGNIFICANCE: The plasma complement could be one of the most responsible components of the in vitro bacteriostatic effect of P-PRP, P-PRG, LPG and PPP against MSSA. Additionally, P-PRG was the better biomaterial because it had an acceptable bacteriostatic effect and the highest concentration of growth factors.

Ithomiini butterflies (Lepidoptera: Hymphalidae) of Antioquia, Colombia.

Colombia is one of the most biodiverse countries on the planet. However, economic and scientific investment in completing inventories of its biodiversity has been relatively poor in comparison with other Neotropical countries. Butterflies are the best studied group of invertebrates, with the highest proportion of known to expected species. More than 3,200 species of butterflies have been recorded in Colombia, although the study of the still many unexplored areas will presumably increase this number. This work provides a list of Ithomiini butterflies collected in the department of Antioquia and estimates the total number of species present, based on revision of entomological collections, records in the literature and field work performed between 2003 and 2011. The list includes 99 species and 32 genera, representing 27% of all Ithomiini species. We report 50 species of Ithomiini not formerly listed from Antioquia, and found the highest diversity of ithomiine species to be at middle elevations (900-1,800 m). The mean value of the Chao2 estimator for number of species in Antioquia is 115 species, which is close to a predicted total of 109 based on known distributions of other Ithomiini not yet recorded from the department. Nine species are potentially of particular conservation importance because of their restricted distributions, and we present range maps for each species. We also highlight areas in Antioquia with a lack of biodiversity knowledge to be targeted in future studies. This paper contributes to mapping the distribution of the Lepidoptera of Antioquia department in particular and of Colombia in general.