In-office dental bleaching in adolescents using 6% hydrogen peroxide with and without gingival barrier: a randomized double-blind clinical trial

Abstract At low concentrations used for in-office bleaching gels, such as 6% HP, gingival barrier continues to be performed. If we take into account that, in the at-home bleaching technique, no barrier is indicated, it seems that the use of a gingival barrier fails to make much sense when bleaching gel in low concentration is used for in-office bleaching. Objective This double-blind, split-mouth, randomized clinical trial evaluated the gingival irritation (GI) of in-office bleaching using 6% hydrogen peroxide (HP) with and without a gingival barrier in adolescents, as well as color change and the impact of oral condition on quality of life. Methodology Overall, 60 participants were randomized into which side would or would not receive the gingival barrier. In-office bleaching was performed for 50 minutes with 6% HP in three sessions. The absolute risk and intensity of GI were assessed with a visual analogue scale. Color change was assessed using a digital spectrophotometer and color guides. The impact of oral condition on quality of life was assessed using the Brazilian version of the Oral Health Impact Profile (α=0.05). Results The proportion of patients who presented GI for the "with barrier" group was 31.6% and for the "without barrier" group, 30% (p=1.0). There is an equivalence for the evaluated groups regarding GI intensity (p<0.01). Color change was detected with no statistical differences (p>0.29). There was a significant impact of oral condition on quality of life after bleaching (p<0.001). Conclusions The use or not of the gingival barrier for in-office bleaching with 6% HP was equivalent for GI, as well as for bleaching efficacy, with improvement in the impact of oral condition on quality of life.

Hemorragia subaracnoidea asociada a aneurisma cerebral con malformación arteriovenosa / Subarachnoid hemorrhage related to a cerebral aneurysm with arteriovenous malformation

Los aneurismas asociados a las malformaciones arteriovenosas son lesiones vasculares que suelen encontrarse hasta en el 15 % de los pacientes que las presentan, lo que incrementa el riesgo global de hemorragia. Se presenta una paciente de 53 años de edad que sufrió un cuadro agudo de hemorragia subaracnoidea; en el estudio se evidenció la presencia de un aneurisma de comunicante anterior y malformación arteriovenosa distal de la arteria cerebral anterior izquierda, el cual requirió procedimiento quirúrgico debido al sangramiento. La evolución de la paciente fue satisfactoria y sin complicaciones.

Aneurysms associated with arteriovenous malformations are vascular lesions that are usually found in up to 15% of the patients who present them, which increases the overall risk of bleeding. We present a 53-year-old female patient who suffered from an acute subarachnoid hemorrhage; the study revealed the presence of an anterior communicating aneurysm and a distal arteriovenous malformation of the left anterior cerebral artery, which required surgical procedure due to bleeding. The evolution of the patient was satisfactory and without complications.

Acute lichenoid and varioliform pityriasis in a pediatric patient / Vasculitis linfocítica en pitiriasis liquenoide y varioliforme aguda de un paciente pediátrico

Abstract Background: Pityriasis lichenoides et varioliformis acuta (PLEVA) is a rare dermatosis recognized as a benign condition of unknown etiopathogenesis. It is more common in pediatric patients and young adults and is characterized by multiple small or large erythematous plaques spread over the trunk and extremities. Case report: We describe the case of a 5-year-old male, previously healthy, with multiple erythematous lesions that disappeared leaving hypopigmented macules. The biopsy reported histological changes suggestive of mycosis fungoides. After a second revision of lamellae in this hospital, lymphocytic vasculitis (LV) with focal epidermal necrosis consistent with acute pityriasis lichenoides (PL) was identified. Conclusions: The existing knowledge about PLEVA lacks a consensus in specifying its classification, etiopathogenesis, diagnosis, and treatment, so this clinical condition represents a medical challenge. The diagnosis is made by clinical suspicion and confirmed by histology. The objective of this article was to report a case of PLEVA with an atypical presentation due to its histopathological findings, being the first report showing LV in children, as well as a review of the literature.

Resumen Introducción: La pitiriasis liquenoide y varioliforme aguda (PLEVA) es una dermatosis poco frecuente, de etiopatogenia desconocida y evolución autolimitada. Es más común en pacientes pediátricos y adultos jóvenes, y está caracterizada por la presencia de múltiples placas eritematoescamosas pequeñas o grandes, diseminadas en el tronco y las extremidades. Caso clínico: Se describe el caso de un escolar de 5 años, de sexo masculino, previamente sano, que presentó múltiples cuadros de lesiones eritematosas que desaparecían dejando máculas hipopigmentadas. La biopsia reportó cambios histológicos sugestivos de micosis fungoide. Se realizó una segunda revisión de laminillas, identificando vasculitis linfocítica con necrosis epidérmica focal, consistente con pitiriasis liquenoide aguda. Conclusiones: El conocimiento acerca de la PLEVA carece de un consenso que especifique su clasificación, etiopatogenia, diagnóstico y tratamiento, por lo que esta condición clínica representa un desafío médico. El diagnóstico se realiza por sospecha clínica y se confirma por histología. El objetivo de este artículo fue reportar un caso de PLEVA con presentación atípica por los hallazgos histopatológicos, siendo este el primer reporte de vasculitis linfocítica en niños, y además se realiza una revisión de la literatura.

Relationship of the T-wave Tpeak-Tend interval with conduction system disorders in arterial hypertension / Relación del intervalo Tpico-Tfinal de la onda T con trastornos del sistema de conducción en hipertensión arterial

Abstract Purpose: The Tpeak-Tend interval of the T wave has emerged as a new electrocardiographic marker of increased transmural dispersion of ventricular repolarization. We aimed to determine the presence of cardiac conduction system disorders in patients with systemic arterial hypertension (SAH) who have altered Tpeak-Tend interval of the T wave. Methods: The 67 patients with SAH were divided into two groups. Those with prolonged (≥ 77 ms) Tpeak-Tend intervals, 21 (31%) patients were in the study group. Those with normal (< 77 ms) Tpeak-Tend intervals, 46 (69%) patients were in the control group. Alteration of ventricular repolarization manifested as a prolongation of the Tpeak-Tend interval was detected by computerized electrocardiographic analysis tools. Results: The median value of QRS complex duration was significantly wider in the study group as compared to the control group (110 ± 12 ms vs. 94 ± 8 ms p < 0.001). There was a significantly greater incidence of left anterior hemiblock in the study group (14% vs. 0% p < 0.04). The median value of the QTc interval was significantly greater in the study group (440 ± 26 vs. 422 ± 15 p < 0.01). There was a significantly greater incidence of patients with prolonged QTc interval in the study group (33% vs. 11% p < 0.02). The median value of the Tpeak-Tend interval was significantly greater in the study group (84 ± 5 ms vs. 65 ± 4 ms p < 0.001), as well as, the Tpeak-Tend/QTc ratio in the study group (0.19 ± 0.1 vs. 0.16 ± 0.1 p < 0.001). Conclusion: There is a significantly greater ventricular repolarization disorders and abnormalities of the cardiac conduction system in SAH patients who possess altered Tpeak-Tend interval of the T wave.

Resumen Objetivo: El intervalo Tpico-Tfinal de la onda T es un marcador electrocardiográfico de la dispersión transmural aumentada de la repolarización ventricular. Investigamos la presencia de trastornos del sistema de conducción cardíaca en pacientes con hipertensión arterial sistémica (HA) que poseen alterado el intervalo Tpico-Tfinal de la onda T. Métodos: Los 67 pacientes con HA fueron divididos en dos grupos. Aquellos con intervalos de Tpico-Tfinal prolongados (≥ 77 ms), 21 (31%) pacientes (grupo de estudio). Aquellos con intervalos normales (< 77 ms) Tpico-Tfinal, 46 (69%) pacientes (grupo control). Los intervalos Tpico-Tfinal fueron medidos por herramientas de análisis electrocardiográfico computarizado. Resultados: El valor mediano de la duración del complejo QRS fue significativamente más amplio en el grupo de estudio (110 ± 12 ms vs. 94 ± 8 ms p < 0.001). Hubo una incidencia significativamente mayor de hemibloqueo anterior izquierdo en el grupo de estudio (14% vs. 0% p < 0.04). El valor mediano del intervalo QTc fue significativamente mayor en el grupo de estudio (440 ± 26 vs. 422 ± 15 p < 0.01). Hubo una incidencia significativamente mayor de pacientes con intervalo QTc prolongado en el grupo de estudio (33% vs. 11% p < 0.02). El valor mediano del intervalo Tpico-Tfinal fue significativamente mayor en el grupo de estudio (84 ± 5 ms vs. 65 ± 4 ms p < 0.001), así como el cociente Tpico-Tfinal/QTc (0.19 ± 0.1 vs. 0.16 ± 0.1 p < 0.001). Conclusión: Existe una alteración de la repolarización ventricular significativamente mayor y anomalías del sistema de conducción cardíaca en pacientes con HA que poseen alteración del intervalo Tpico-Tfinal de la onda T.

Perspectiva social del impacto de la miopía / Social perspective of the impact of myopia

La visión, el más dominante de los sentidos, tiene un papel esencial en cada aspecto y etapa de la vida. Se da por sentada la visión, pero sin ella, resulta difícil la realización de tareas cotidianas como aprender a caminar, leer, conducir y trabajar. La miopía es una alteración visual que se encuentra entre las cinco condiciones, donde su atención clínica ha sido calificada de prioridad inmediata para la Organización Mundial de la Salud. La prevalencia de la miopía y la miopía magna aumentan a nivel mundial a un ritmo alarmante. Existen diversos factores socioeconómicos, psicológicos y sociales que impactan en la calidad de vida de quienes la padecen. De ahí la motivación de realizar un acercamiento a dichas variables para comprender desde una perspectiva social las implicaciones de esta afección visual mediante una búsqueda actualizada de diversos artículos publicados, con el objetivo de identificar los problemas sociales relacionados a la miopía. Se utilizó la plataforma Infomed, específicamente la Biblioteca Virtual de Salud, con todos sus buscadores(AU)

The vision, the dominantest in the senses, has an essential paper in each aspect and stage of the life. It is given by sitting the vision, but without her, it is difficult the realization of daily tasks as learning how to walk, to read, to drive and to work. The myopia is a visual alteration that is between the five conditions where its clinical attention it has been described as immediate priority for the World Organization of the Health. The prevalencia of the myopia and the great myopia increase at world level to an alarming rhythm. Diverse socioeconomic, psychological and social factors that impact in the quality of life of who you/they suffer it, exist of there the motivation of carrying out an approach to this variables to understand from a social perspective the implications of this visual affection by means of a modernized search of diverse published articles, with the objective of identifying the social problems related to the myopia. The platform Infomed was used, specifically the Virtual Library of Health, with all its searchers(AU)

Rare CFTR large deletions: a series of cases / Grandes deleções raras no CFTR: uma série de casos

Aims: this paper aims to describe diagnosis and follow-up of patients affected by the Cystic Fibrosis (CF) manifestations and CFTR large deletions. For this, we performed a retrospective analysis of medical records, including genotyping and retrospective follow-up of clinical and lung function data. Electronic and printed medical records of patients followed at a referral outpatient clinic in CF were evaluated. Case description: we found that three patients had large deletions in the CFTRgene, being two of them heterozygous (heterozygous with deletion on exons from 2 to 3, and heterozygous for deletions on exons from 25 to 27) and one of them homozygous (homozygous for the deletions on exons from 19 to 21). One patient had a false negative result in complete genetic sequencing. All three received standard treatment for CF. Two patients died from CF pulmonary complications. Therefore, false negatives findings in CFTR sequencing for the diagnosis of CF are rare but may be more frequent in patients with large deletions. Conclusions: CFTR large deletions are associated with severe CF phenotypes

Objetivo: este trabalho tem como objetivo descrever o diagnóstico e o acompanhamento de pacientes acometidos pelas manifestações da fibrose cística e grandes deleções do gene CFTR. Para isso, realizamos análise retrospectiva de prontuários, incluindo genotipagem e acompanhamento retrospectivo de dados clínicos e de função pulmonar. Descrição dos casos: foram avaliados prontuários eletrônicos e impressos de pacientes acompanhados em ambulatório de referência em fibrose cística. Encontramos três pacientes com grandes deleções no gene CFTR, sendo dois deles heterozigotos (heterozigotos com deleção nos éxons de 2 a 3 e heterozigotos para deleções nos éxons de 25 a 27) e um deles homozigoto (homozigoto para as deleções nos éxons de 19 a 21,). Um paciente apresentou resultado falso negativo no sequenciamento genético completo. Todos os três receberam tratamento padrão para fibrose cística. Dois pacientes morreram de complicações pulmonares da fibrose cística. Portanto, achados falsos negativos no sequenciamento CFTR para o diagnóstico de fibrose cística são raros, mas podem ser mais frequentes em pacientes com grandes deleções. Conclusão: grandes deleções de CFTR estão associadas a fenótipos graves de FC

In-office dental bleaching in adolescents using 6% hydrogen peroxide with different application tips: randomized clinical trial

Abstract Despite the availability of in-office bleaching gels with a 6% concentration of hydrogen peroxide (HP), these gels have not been evaluated in younger patients. They are commercially available with a tip, associated or not with a brush, where the tip with a brush spreads the gel over the entire surface to have a smaller thickness (thin layer) since the manufacturers indicate the application of a thin layer of gel. Objective This randomized, split-mouth, double-blind clinical trial evaluated the efficacy of in-office bleaching with 6% HP in adolescents using different application tips, as well tooth sensitivity (TS) and aesthetic self-perception. Methodology Sixty participants were randomized for 6% HP self-mixing bleaching gel tip design: without brush and with brush. In-office bleaching was performed in 3 sessions of 50 minutes. Color change was evaluated using a digital spectrophotometer (ΔE ab , ΔE 00 , and ΔWI D ) and color guide (ΔSGU), the absolute risk and intensity of TS with a visual analogue scale and aesthetic self-perception with the oral aesthetic scale (a=0.05). Results The groups achieved similar bleaching regardless of the application tip (p>0.05). However, only for ΔWI D , a significant mean difference (MD) was observed in the third week (MD 2.3; 95% CI 1.2 to 3.3; p < 0.001) and at one month (MD 1.6; 95% CI 0.6 to 2.6; p < 0.03) favoring the tip without brush. Regarding TS, 45% in the tip-without-brush group and 33% in the tip-with-brush group reported TS (odds ratio 0.61; 95% CI 0.29 to 1.28; p<0.02), with low TS intensity (MD 0.05; 95% CI -0.06 to 0.17; p>0.36). All patients reported improved aesthetic self-perception after bleaching (MD -1.3; 95% -1.8 to -0.9; p<0.001). Conclusions Regardless of the tip used bleaching with 6% HP achieved a bleaching efficacy and improved the aesthetic self-perception. However, a lower risk of TS for application using the tip with brush was observed.

Openreuma consensus on the role of nursing in the care of patients with rheumatoid arthritis and diffuse interstitial lung disease / Consenso de Openreuma sobre el papel de la enfermería en el cuidado de pacientes con artritis reumatoide y enfermedad pulmonar intersticial difusa / Consenso Openreuma sobre o papel da enfermagem no cuidado de pacientes com artrite reumatoide e doença pulmonar intersticial difusa

Objective.To develop practical recommendations, based on the best available evidence and experience, on the nursing management of patients with rheumatoid arthritis (RA) and interstitial lung disease (ILD). Methods. The usual consensus methodology was used, with a nominal group, systematic reviews (SRs), and Delphi survey. The expert panel, consisting of rheumatology nurses, rheumatologists, a psychologist, a physiotherapist, and a patient, defined the scope, the users, the topics on which to explore the evidence and on which to issue recommendations. Results.Three PICO questions evaluated the efficacy and safety of pulmonary rehabilitation and non-pharmacological measures for the treatment of chronic cough and gastroesophageal reflux by means of SR of the literature. With the results of the reviews, 15 recommendations were established for which the degree of agreement was obtained with a Delphi survey. Three recommendations were rejected in the second round. The 12 recommendations were in patient assessment (n=4); patient education (n=4); and risk management (n=4). Only one recommendation was based on available evidence, while the remaining were based on expert opinion. The degree of agreement ranged from 77% to 100%. Conclusion.This document presents a series of recommendations with the aim of improving the prognosis and quality of life of patients with RA-ILD. Nursing knowledge and implementation of these recommendations can improve the follow-up and prognosis of patients with RA who present with ILD.

Objetivo.Desarrollar recomendaciones prácticas, basadas en la mejor evidencia y experiencia disponible, sobre el manejo de enfermería de los pacientes con artritis reumatoide (AR) y enfermedad pulmonar intersticial (EPI). Métodos. Se utilizó la metodología de consenso en la que un panel de expertos (formado por enfermeras de reumatología, reumatólogos, una psicóloga, una fisioterapeuta y una paciente) definió el ámbito, los usuarios, los temas sobre los que explorar la evidencia y sobre los que emitir recomendaciones. Tres preguntas PICO evaluaron la eficacia y seguridad de la rehabilitación pulmonar y las medidas no farmacológicas para el tratamiento de la tos crónica y el reflujo gastroesofágico mediante la búsqueda de revisiones sistemáticas, excluyendo aquellas cuya calidad era baja, muy baja o críticamente baja, según la herramienta AMSTAR-2. Posteriormente, se hizo una reunión para la formulación de recomendaciones que se presentaron con un resumen de la evidencia a la encuesta Delphi. Resultados.Con los resultados de las revisiones se establecieron 15 recomendaciones cuyo grado de acuerdo osciló entre el 77% y el 100% en la una encuesta Delphi. Tres recomendaciones fueron rechazadas en la segunda ronda: una por la evidencia disponible y los dos restantes se basaron en la opinión de expertos. Las 12 recomendaciones restantes aprobadas se referían a la evaluación del paciente (n=4), a la educación del paciente (n=4) y a la gestión del riesgo (n=4). Conclusión. El conocimiento del consenso Openreumapor parte de enfermería y la aplicación sus 12 recomendaciones basadas en la mejor evidencia y experiencia puede mejorar el seguimiento y el pronóstico de los pacientes con AR que presentan EPI.

Objetivo.Desenvolver recomendações práticas, baseadas na melhor evidência e experiência disponíveis, sobre o manejo de enfermagem de pacientes com artrite reumatoide (AR) e doença pulmonar intersticial (DPI). Métodos.Foi utilizada a metodologia de consenso, com grupo nominal, revisões sistemáticas e levantamento Delphi. O painel de especialistas, formado por enfermeiros reumatologistas, reumatologistas, psicólogo, fisioterapeuta e paciente, definiu o escopo, os usuários, os tópicos sobre os quais explorar as evidências e sobre os quais emitir recomendações. Três questões do PICO avaliaram a eficácia e segurança da reabilitação pulmonar e medidas não farmacológicas para o tratamento da tosse crônica e refluxo gastroesofágico por meio de RS. Aqueles cuja qualidade era baixa, muito baixa ou criticamente baixa, de acordo com a ferramenta AMSTAR-2, foram excluídos. Posteriormente, realizou-se uma reunião para formular recomendações que foram apresentadas com um resumo das evidências ao inquérito Delphi. Resultados. Com os resultados das revisões, foram estabelecidas 15 recomendações cujo grau de concordância entre 77% e 100% foi obtido com uma pesquisa Delphi. Três recomendações foram rejeitadas na segunda rodada. As 12 recomendações referiam-se à avaliação do paciente (n=4); à educação do paciente (n=4); e ao gerenciamento de risco (n=4). Apenas uma recomendação foi baseada nas evidências disponíveis, enquanto as demais foram baseadas na opinião de especialistas. Conclusão. Este documento apresenta uma série de recomendações com o objetivo de melhorar o prognóstico e a qualidade de vida dos pacientes com AR-ILD. O conhecimento da enfermagem e a aplicação dessas recomendações podem melhorar o acompanhamento e o prognóstico de pacientes com AR com DPI.

Multivessel coronary thrombosis and acute myocardial infarction associated to two genetic mutations for thrombophilia / Trombosis coronaria de múltiples vasos e infarto agudo de miocardio asociado a dos mutaciones genéticas para trombofilia

Abstract Several studies suggest that gene mutations from thrombophilia may constitute a significant risk factor for coronary artery disease, especially in young patients with normal coronaries and non-significant lesions. It is presented a case of a 42-year-old male patient who arrived at the emergency room due to an acute myocardial infarction. The electrocardiogram showed an ST elevation with upward convexity of 4 mm from V1 to V4 and of 1 mm at V5 and V6. Cardiac enzymes were positive (troponin I 8.4 ng/dl, normal range < 1 ng/dl). It was found septum and apical hypokinesia, with an ejection fraction of 44%. The culprit lesion of the infarction was treated with primary angioplasty, successfully dilating the left anterior descending coronary artery. However, spontaneous thrombi appeared at the middle third of the circumflex artery, an area without occlusive lesions previously. A full laboratory assessment for prothrombotic state diseases revealed positivity for gene mutations at A1298C from the methylene tetrahydropholate reductase (MTHFR) and plasminogen activator inhibitor-1 (PAI-1). Gene mutations at A1298C from the MTHFR and PAI-1 should be considered in young patients with acute coronary syndrome, mainly when thrombi are found in non-culprit arteries with no or non-significant coronary lesions.

Resumen Las mutaciones genéticas de la trombofilia pueden constituir un factor de riesgo significativo para la enfermedad de la arteria coronaria, especialmente en pacientes jóvenes con arterias coronarias normales y lesiones no significativas. Se presenta el caso de un paciente masculino de 42 años con infarto agudo de miocardio. El electrocardiograma demostró una elevación del ST con convexidad ascendente de 4 mm de V1 a V4 y de 1 mm en V5 y V6. Las enzimas cardíacas fueron positivas (troponina I 8.4 ng/dl, rango normal < 1 ng/dl). Se observó hipocinesia septal y apical con fracción de eyección de 44%. La lesión causante del infarto fue tratada con angioplastia primaria, dilatando con éxito la arteria coronaria descendente anterior. Sin embargo, aparecieron trombos espontáneos en el tercio medio de la arteria circunfleja, que previamente no presentaba lesiones ateroscleróticas oclusivas. Al evaluar enfermedades protrombóticas se reveló positividad para mutaciones del gen A1298C de la metileno tetrahidrofolato reductasa (MTHFR) y del inhibidor del activador del plasminógeno (PAI-1) del genotipo heterocigoto 675G. Las mutaciones en A1298C del gen MTHFR y del PAI-1 deben considerarse en jóvenes con síndrome coronario agudo, principalmente cuando se encuentran trombos en arterias no culpables sin lesiones coronarias significativas.

Percepción del riesgo de desastres en habitantes del municipio de Pijao, Quindío, Colombia / Perception of Disaster Risk Among Inhabitants of the Municipality of Pijao, Quindío, Colombia

Resumen La gestión del riesgo de desastres es un proceso social, por ello toda la comunidad debe estar incluida en ella. El objetivo del estudio fue analizar las percepciones del riesgo de desastres en habitantes del municipio de Pijao (Quindio). Para esto se siguió un enfoque cualitativo desde el diseño de la teoría fundamentada. Se realizó un muestreo no probabilístico en los barrios aledaños al recorrido del Río Lejos del municipio de Pijao (Quindío, Colombia). La muestra estuvo compuesta por un total de 60 sujetos. La teoría sustantiva producto de la investigación es la naturalización de la gestión del riesgo de desastres. Se considera que la naturalización de acciones para la mitigación del riesgo de desastres se posibilita por el nivel de conocimiento de conceptos y acciones de la gestión del riesgo, además del nivel de arraigo cultural. El estudio permitió conocer de primera mano sobre los elementos que se deben trabajar para fortalecer la gestión del riesgo a nivel comunitario.

Abstract Disaster risk management is a social process; therefore, the whole community must be included in it. The objective of the study was to analyze the perceptions of disaster risk in the inhabitants of the municipality of Pijao (Quindio). A qualitative approach was followed from the design of the grounded theory. A non‑probabilistic sampling was carried out in the neighborhoods adjacent to the course of the Lejos River in the municipality of Pijao (Quindio, Colombia). The sample was composed of a total of 60 subjects. The substantive theory resulting from the research is the naturalization of disaster risk management. It is considered that the naturalization of actions for disaster risk mitigation is made possible by the level of knowledge of risk management concepts and actions, in addition to the level of cultural rootedness. The study provided first-hand knowledge of which elements level should be worked on in the community to strengthen risk management.

Disfunción del nódulo sinusal asociado a estenosis severa proximal de la arteria coronaria derecha y vasoespasmo coronario

RESUMEN La disfunción del nódulo sinusal (DNS) es generalmente secundaria a la senescencia del nodo sinusal y del miocardio auricular circundante. Estamos presentando un paciente de 59 años de edad, hipertenso sin tratamiento y con antecedente de síncope en dos oportunidades en los últimos 4 meses. Ingresa debido a un flutter auricular con conducción auriculoventricular 1:1 con una frecuencia cardiaca de 280 lat/min que cede con goteo de amiodarona. Un Holter de 24 horas demostró un ritmo sinusal predominante, episodios paroxísticos de fibrilación auricular con respuesta ventricular alta, bradicardia sinusal de 47 lat/min. Se realizó el diagnóstico de disfunción del nódulo sinusal, Rubenstein tipo III (Síndrome Bradicardia-Taquicardia). Una coronariografía constató una estenosis del 80% en segmento proximal de la arteria coronaria derecha con componente espástico. La arteria del nódulo sinusal emerge del segmento proximal de la coronaria derecha. Se realizó una angioplastia exitosa con stent medicado. Otro estudio Holter de 24 horas de control pos-angioplastia registró nuevamente episodios paroxísticos de fibrilación auricular con respuesta ventricular alta y episodios de pausas de hasta 3.100 milisegundos por lo que se implantó un marcapasos bicameral. A pesar del restablecimiento de un flujo sanguíneo adecuado a la arteria del nódulo sinusal con la angioplastia de la coronaria derecha no se obtuvo una mejoría de la disfunción del nódulo sinusal.

ABSTRACT Sinus node dysfunction (SND) is generally secondary to senescence of the sinus node and the surrounding atrial myocardium. We are presenting a 59-year-old patient, hypertensive without treatment and with a history of syncope on two occasions in the last 4 months. He was admitted due to a 1: 1 atrioventricular conduction atrial flutter with a heart rate of 280 beats/min that subsides with an amiodarone drip. A 24-hour Holter monitor showed predominant sinus rhythm, paroxysmal episodes of atrial fibrillation with high ventricular response, sinus bradycardia of 47 beats/min. The diagnosis of sinus node dysfunction, Rubenstein type III (Bradycardia-Tachycardia Syndrome) was made. A coronary angiography confirmed an 80% stenosis in the proximal segment of the right coronary artery with a spastic component. The sinus node artery emerges from the proximal segment of the right coronary artery. A successful angioplasty was performed with a medicated stent. Another 24-hour Holter study of post-angioplasty control again recorded paroxysmal atrial fibrillation with high ventricular response episodes and pause episodes of up to 3,100 milliseconds, for which a dual-chamber pacemaker was implanted. Despite the restoration of adequate blood flow to the sinus node artery with right coronary angioplasty, no improvement in sinus node dysfunction was obtained.

Himen: un epónimo y mito de larga data en terminologia anatomica / Hymen: a long-standing eponym and myth in terminologia anatomica

RESUMEN: En Terminología Anatómica el término himen es identificado con el número 3530. Es un pequeño tejido membranoso que normalmente ocupa una parte de la abertura vaginal externa en la mujer. La pertinencia del término himen ha sido poco abordada en la literatura del campo terminológico anatómico, por tanto, el objetivo del presente trabajo fue analizar este término, verificar su etimología y funcionalidad, y determinar cómo este ha sido considerado en algunos aspectos de orden cultural, clínico y jurídico. El término himen proviene del latín hymen que es préstamo del griego hymḗn ὑμήν que significa membrana. Con el valor general de cualquier membrana fue usado en Grecia desde el siglo V a.C., sin embargo, a través de un fenómeno de especialización latina, a partir de los siglos I y II d.C., el término fue usado con su significado actual. Su origen proviene del nombre del dios griego del matrimonio llamado Himeneo, lo que vincula el término a un epónimo y mito a la vez. Pese a lo anterior, creemos que su conservación en Terminología Anatómica se podría deber a su larga data de uso, aun cuando podrían existir mejores opciones para denominar esta estructura. El himen no presenta una función biológica conocida, sin embargo, ha tenido gran valoración a nivel cultural, clínico y jurídico, en el que el examen físico ha determinado conclusiones sobre la historia sexual de mujeres y niñas aun cuando las evidencias demuestran que no es una prueba precisa o confiable de la actividad sexual.

SUMMARY: In Terminologia Anatomica the term hymen is identified with the number 3530. It is a small membranous tissue that normally occupies a part of the external vaginal opening in women. The relevance of the term hymen has been scarcely addressed in the literature of the anatomical terminology field. Therefore, the objective of this work was to analyze this term, verify its etymology and functionality, and determine how it has been considered in certain cultural clinical and legal aspects. The term hymen comes from the Latin hymen, borrowed from the Greek hymḗn ὑμήν , which means membrane. With the general value of any membrane, it was used in Greece from the 5th century BC, however, through a phenomenon of Latin specialization, from the 1st and 2nd centuries AD, the term was used applying its current meaning. Its origin comes from the name of the Greek god of marriage called Hymenaeus, which links the term to an eponym and a myth at the same time. Despite the above, we believe that its conservation in Terminologia Anatomica could be due to its long history, even though there may be better options to name this structure. The hymen does not have a known biological function, however, it has been highly valued at a cultural, clinical and legal level, in which the physical examination has determined conclusions about the sexual history of women and girls even when the evidence shows that it is not an accurate or reliable proof of sexual activity.

Test para el diagnóstico precoz de lesiones premalignas de colon / A Test for Early Diagnosis of Premalignant Colonic Lesions

Introducción: El cáncer colorrectal en nuestro país ocupa la tercera causa de muerte por tumores malignos y constituye un problema de salud a nivel mundial, que en la actualidad es prevenible al realizar pruebas para la detección de lesiones premalignas. Objetivo: Evaluar el valor presuntivo de lesiones premalignas colónicas en pacientes con sangre oculta en las heces. Métodos: Se realizó estudio observacional, descriptivo, transversal, en pacientes con sangre oculta en las heces, atendidos en el Servicio de Gastroenterología del Hospital Docente Clínico Quirúrgico Diez de Octubre, a los cuales se les realizó colonoscopia, en el período comprendido de enero de 2016 a enero de 2017. Para evaluar las variables se utilizó el porcentaje como medida matemática y los resultados fueron expuestos en tablas. Resultados: Al finalizar el estudio se observó un predomino del sexo femenino. La pesquisa, el cambio del hábito intestinal y las diarreas crónicas fueron las indicaciones más frecuentes de sangre oculta en heces. Los pólipos y las lesiones de aspecto malignas fueron los diagnósticos colonoscópicos más frecuentes. Las lesiones de aspecto malignas se localizaron en mayor proporción en colon izquierdo. El diagnóstico histológico más frecuente fueron los adenomas y adenocarcinomas. Conclusiones: El test de sangre oculta en heces es un método predictivo en la pesquisa de lesiones premalignas y malignas de colon en pacientes atendidos en el primer nivel de atención(AU)

Introduction: In Cuba, colorectal cancer accounts for the third cause of death by malignant tumors, while it is a worldwide health problem, currently preventable by performing tests for the detection of premalignant lesions. Objective: To evaluate the presumptive value of colonic premalignant lesions in patients with fecal occult blood. Methods: An observational, descriptive and cross-sectional study was carried out in patients with fecal occult blood, who received attention in the gastroenterology service of Diez de Octubre Surgical Clinical Teaching Hospital and underwent colonoscopy, in the period from January 2016 to January 2017. To evaluate the variables, the percentage was used as a mathematical measure and the results were shown in tables. Results: At the end of the study, a predominance of the female sex was observed. Screening, change of bowel habit and chronic diarrhea were the most frequent indications of fecal occult blood. Polyps and malignant lesions were the most frequent colonoscopic diagnoses. Malignant-appearing lesions were mostly located in the left colon. The most frequent histological diagnosis was made up of adenomas and adenocarcinomas. Conclusions: The fecal occult blood test is a predictive method for the detection of premalignant and malignant lesions of the colon in patients who receive attention at the first level of care(AU)

Conocimiento y aplicación de la política de seguridad del paciente por el personal de enfermería, para la prevención y reporte del evento adverso en un hospital de segundo nivel en Cundinamarca / Knowledge and application of the patient safety policy by the nursing staff, for the prevention and reporting of medical errors in a second level hospital in Cundinamarca

Objetivo Determinar el efecto de una intervención educativa sobre el conocimiento y la aplicación de la política de seguridad del paciente por el personal de enfermería, para la prevención y reporte del evento adverso en un Hospital de segundo nivel en Cundinamarca. Metodología Estudio cuantitativo, cuasi experimental con diseño pretest ­ postest de grupo único. 40 participantes dentro del personal de Enfermería de los diferentes servicios del Hospital; esta investigación tuvo en cuenta las consideraciones éticas para la Investigación en salud. Se elaboró un pre y pos-test a partir del reporte estadístico de eventos adversos de mayor frecuencia y la intervención educativa, con ello se aplicó una prueba U de Mann-Whitney apareada. Resultados Con este estudio se puede afirmar que la existencia de EA a nivel asistencial es causada por las acciones inseguras en la atención, ejecutadas por los profesionales de salud en medio del cumplimiento de la alta carga laboral. Con el apareamiento del pre y pos-test no se obtuvieron diferencias significativas, pero se infiere que la implementación de estrategias educativas son un importante soporte en la realización de los diferentes procedimientos para la prevención del evento adverso. Conclusión Se afirma que el cuidado de enfermería lleva implícito en su quehacer, la prevención de los eventos adversos, estos deben articularse a su vez con una disponibilidad de recursos Institucionales (humanos, de infraestructura y materiales, entre otros) que fortalezcan la política de seguridad del paciente, disminuyan el riesgo de incidentes y promuevan un cuidado de calidad y una atención segura.

Objective To determine the effect of an educational intervention on the knowledge and application of the patient safety policy by the nursing staff, for the prevention and reporting of medical errors in a second level Hospital in Cundinamarca. Methodology Quantitative, quasi-experimental study with pretest-posttest single group design. 40 participants within the nursing staff of the different services of the Hospital; this research considered the ethical considerations for health research. A pretest and posttest were elaborated based on the statistical report of the most frequent Medical Errors (ME) and the educational intervention, and a paired U Mann-Whitney test was applied. Results With this study it can be affirmed that the existence of ME's at the assistance level is caused by unsafe actions in care, executed by health professionals in the midst of the high workload. With the pairing of the pre- and post-test, no significant differences were obtained, but it can be inferred that the implementation of educational strategies is an important support in the performance of the different procedures for the prevention of ME. Conclusion It is affirmed that nursing care has implicit in their work, the prevention of medical errors, these must be articulated in turn with the availability of institutional resources (human, infrastructure, and materials, among others) that strengthen the patient safety policy, reduce the risk of incidents, and promote quality care and safe care.

Vigilancia de la infección por SARS-CoV-2 COVID-19 en un hospital pediátrico / Surveillance of the SARS-CoV-2 COVID-19 infection in a pediatric hospital / Vigilância da infecção por SARS-CoV-2 COVID-19 em um hospital pediátrico

Introducción: a partir de enero de 2020, cuando la OMS declaró la infección por SARS-CoV-2 COVID-19 como una emergencia de interés internacional, en los centros de atención pediátrica se comenzaron a implementar protocolos de actuación y actividades con miras a la preparación y contención de la pandemia. Objetivo: describir los resultados de la vigilancia hospitalaria y las características epidemiológicas-clínicas de niños y adolescentes con infección por SARS-CoV-2 COVID-19 en el período comprendido entre 1/4/2020 y 30/4/2021 en un hospital pediátrico. Material y métodos: se realizó un estudio observacional descriptivo retrospectivo. Período considerado 1/4/2020-30/4/2021. Se incluyeron todos los niños y adolescentes menores de 16 años con diagnóstico de infección por SARS-CoV-2 COVID-19 por test de PCR y captados por el Comité de Infecciones Hospitalarias (CIH) y la Unidad de Epidemiología e Infectología Pediátrica. Se realizó PCR para SARS-CoV-2 a todos los usuarios internados, a los incluidos en la vigilancia IRAG según definición de caso, y a niños y adolescentes con internaciones prolongadas cada 10 días. Fuente de datos: vigilancia activa establecida por el CIH, historias clínicas, laboratorio. Variables: sexo, edad, motivo de testeo, comorbilidad, contacto, presentación clínica, evolución, brotes hospitalarios. Análisis estadístico: distribución de frecuencias y medidas de resumen. Consideraciones éticas: se garantizó el anonimato en todo el proceso de análisis y comunicación. Resultados: en el período considerado se realizaron 10.645 test de PCR. Se identificaron 53 casos positivos, 7 (13, 2%) correspondieron a 2020 (noviembre y diciembre), 46 (86,8%) a 2021 (enero a abril), 30 (56,6%) de sexo femenino. Edad: 23 (43,4%) fueron menores de 1 año. Mediana 2,5 años. 13 pacientes presentaban comorbilidades (24,5%). En 30 casos (56,6%) el motivo del test fue la presencia de síntomas compatibles, mientras que 22 (41,5%) se encontraban asintomáticos. En 40 casos (75%) se identificó contacto conviviente como fuente de contagio. Permanecieron internados 39 casos, 5 requirieron CTI. 14 casos se asistieron en forma ambulatoria. Ninguno falleció. Se identificó un único brote de transmisión intrahospitalaria con tres usuarios en este período, que se controló en forma rápida. No se constataron contagios de usuarios a personal de salud en el período considerado. Conclusiones: las estrategias de vigilancia y control hospitalario han permitido identificar en forma oportuna los casos de COVID-19 y controlar la transmisión. Los casos crecieron en forma exponencial en consonancia con la situación epidemiológica nacional en el período considerado.

Introduction: as of January 2020, when the WHO declared the SARS-CoV-2 COVID-19 infection as a global health emergency, action protocols and activities began to be implemented in pediatric care centers with the purpose preparing and containing the pandemic. Objective: describe the results of hospital surveillance and the epidemiological-clinical characteristics of children and adolescents with a SARS-CoV-2 COVID-19 infection between 4/1/2020 and 4/30/2021 in a pediatric hospital. Material and methods: a retrospective descriptive observational study was carried out. Period: 4/1/2020-4/30/2021. All children and adolescents under 16 years of age with diagnosis of SARS-CoV-2 COVID-19 infection by PCR test and assisted by the In-Hospital Infectious Diseases Center (CIH) and by the Pediatric Epidemiology and Infectiology Unit. A PCR test for SARS-CoV-2 was performed to all hospitalized users and to those included in SARI surveillance as defined for this case, and to children and adolescents with prolonged hospitalizations every 10 days. Data source: active surveillance established by the CIH, medical records, laboratory data. Variables: sex, age, reason for testing, comorbidities, contact, clinical presentation, evolution, hospital outbreaks. Statistical Analysis: frequency distribution and summary measures. Ethical considerations: anonymity throughout the analysis and communication process. Results: in the period analyzed, 10,645 PCR tests were performed. 53 cases were identified as positive, 7 (13.2%) were in 2020 (November and December), 46 (86.8%) in 2021 (January to April), 30 (56.6%) were female. Age: 23 (43.4%) were under 1 year of age. Median 2.5 years. 13 patients had comorbidities (24.5%). In 30 cases (56.6%), the reason for the test was the presence of compatible symptoms, while 22 (41.5%) were asymptomatic. In 40 cases (75%), we identified a home contact as a source of contagion. 39 cases remained hospitalized, 5 required ICU. 14 cases were assisted on an outpatient basis. None died. A single case was caused by an outbreak of nosocomial transmission involving three users in this period, which was controlled timely. No infections were recorded from users to health staff in the period analyzed. Conclusions: hospital surveillance and control strategies have enabled us to identify cases of COVID-19 in a timely manner and control transmission. Cases grew exponentially in line with the national epidemiological situation in the period analyzed.

Introdução: a partir de janeiro de 2020, quando a OMS declarou a infecção por SARS-CoV-2 COVID-19 como emergência de interesse internacional, começaram a ser implementados protocolos de ação e atividades nos centros de atendimento pediátrico com vistas à preparação e contenção da pandemia. Objetivo: descrever os resultados da vigilância hospitalar e as características epidemiológicas-clínicas de crianças e adolescentes com infecção por SARS-CoV-2 COVID-19 entre 01/04/2020 e 30/04/2021 em um hospital pediátrico. Material e métodos: foi realizado um estudo observacional descritivo retrospectivo. O período considerado foi de 01/04/2020 a 30/04/2021. Participaram todas as crianças e adolescentes com menos de 16 anos de idade com diagnóstico da infecção por SARS-CoV-2 COVID-19 por teste de PCR assistidas no Centro de Infectologia Hospitalar (CIH) e Unidade de Epidemiologia e Infectologia Pediátrica. O Teste PCR foi realizado para SARS-CoV-2 para todos os usuários hospitalizados, para aqueles incluídos na vigilância de SARI, conforme definido para o caso, e para crianças e adolescentes com internações prolongadas a cada 10 dias. Fonte de dados: vigilância ativa estabelecida pelo CIH, prontuário, laboratório. Variáveis: sexo, idade, motivo do teste, comorbidade, contato, apresentação clínica, evolução, surtos hospitalares. Análise estatística: distribuição de frequência e medidas sumárias. Considerações éticas: anonimato durante todo o processo de análise e comunicação. Resultados: no período considerado, foram realizados 10.645 testes de PCR. 53 casos foram identificados positivos, 7 (13,2%) corresponderam a 2020 (novembro e dezembro), 46 (86,8%) a 2021 (janeiro a abril), 30 (56,6%) eram do sexo feminino. Idade: 23 (43,4%) eram menores de 1 ano. Média 2,5 anos. 13 pacientes apresentavam comorbidades (24,5%). Em 30 casos (56,6%) o motivo do exame foi a presença de sintomas compatíveis, enquanto 22 (41,5%) foram assintomáticos. Em 40 casos (75%) o contato foi identificado como fonte de contágio. 39 casos permaneceram internados, 5 foram internados na UTI. 14 casos foram atendidos ambulatorialmente. Nenhum morreu. Um único caso foi causado por transmissão hospitalar envolvendo a três usuários neste período, ele foi controlado rapidamente. Não foram encontradas infecções de usuários para profissionais de saúde no período considerado. Conclusões: as estratégias de vigilância e controle hospitalares permitiram identificar casos de COVID-19 em tempo hábil e controle da transmissão. Os casos cresceram exponencialmente de acordo com a situação epidemiológica nacional no período considerado.

Estrategias didácticas, en el marco de la innovación de la malla curricular 2015, de la Facultad de Ciencias Médicas - UNA de la carrera de medicina. Una visión desde la percepción de los docentes y estudiantes / Didactic strategies, within the framework of the innovation of the curricular mesh 2015, of the Faculty of Medical Sciences of the career of medicine. A vision from the perception of teachers and students

Las estrategias didácticas cumplen un papel relevante en la innovación de la malla curricular, esta investigación tiene por finalidad comprender el proceso de cambio instaurado en la facultad desde la percepción de los actores principales, desde varias aristas relacionadas como la infraestructura, materiales de apoyo e información sobre la malla innovada. Nuestro objetivo fue analizar e interpretar la percepción que tienen los docentes y estudiantes del ciclo básico de la carrera de medicina de Asunción, en relación a la innovación curricular y permitirnos reflexionar y contribuir a este proceso dinámico que está llegando al ciclo clínico, a través de una investigación cualitativa con enfoque hermenéutico

Didactic strategies play a relevant role in the innovation of the curricular mesh, this research aims to understand the process of change established in the faculty from the perception of the main actors, from several related aspects such as infrastructure, support materials and information on the innovated curriculum. Our objective was to analyze and interpret the perception that teachers and students of the basic cycle of the medical career have, in relation to curricular innovation and allow us to reflect and contribute to this dynamic process that is reaching the clinical cycle, through a qualitative research with a hermeneutical approach

Rol de la morfología y dispersión de la onda P en la predicción de fibrilación auricular

RESUMEN Las características anisotrópicas ocasionadas por un miocardio auricular patológico pueden jugar un papel importante en la creación de circuitos de reentrada al causar propagación no homogénea y discontinua del impulso en el miocardio auricular. Este miocardio auricular alterado puede generar bloqueo unidireccional, retraso de la conducción y ritmos auriculares reentrantes. En estas condiciones la onda P del electrocardiograma (ECG) puede mostrar alteraciones que pueden asociarse con arritmias auriculares y fibrilación auricular (FA). La dispersión de la onda P (DP) se considera un marcador no invasivo del ECG para el remodelado auricular y es predictor sensible y específico del desarrollo de FA. Se ha demostrado que el aumento de la duración de la onda P y la DP reflejan la prolongación del tiempo de conducción auricular dentro de la aurícula derecha y entre ambas aurículas, y una propagación auricular no homogénea y discontinua de los impulsos sinusales. Un valor de corte de 40 ms de la DP demostró tener una sensibilidad del 83%, una especificidad del 85% y un valor predictivo positivo del 89% para la identificación de pacientes con antecedentes de FA paroxística aislada. Los pacientes con alteración de la morfología de la onda P y dispersión de la onda P en el ECG tienen una gran susceptibilidad a desarrollar FA porque poseen electrogramas endocárdicos auriculares anormalmente prolongados y fraccionados, una duración de onda P significativamente mayor, un tiempo de conducción intraauricular e interauricular significativamente más largo, y una mayor incidencia de inducción de fibrilación auricular sostenida.

ABSTRACT The anisotropic characteristics caused by a pathological atrial myocardium can play an important role in the creation of reentry circuits by causing discontinuous and inhomogeneous impulse propagation in the atrial myocardium. This altered atrial myocardium can lead to unidirectional block, conduction delay, and reentrant atrial rhythms. Under these conditions, the P wave of the electrocardiogram (ECG) can demonstrate alterations that can be associated with atrial arrhythmias and atrial fibrillation (AF). The P-wave dispersion (PD) is considered a non-invasive ECG marker for atrial remodeling and is a sensitive and specific predictor of the development of AF. Increased P wave duration and PD have been shown to reflect prolonged atrial conduction time within the right atrium and between both atria, and discontinuous, inhomogeneous atrial propagation of sinus impulses. A cutoff value of 40 ms for PD was shown to have a sensitivity of 83%, a specificity of 85%, and a positive predictive value of 89% for the identification of patients with a history of isolated paroxysmal AF. Patients with abnormal P wave morphology and P wave dispersion on the ECG are highly susceptible to developing AF because they have abnormally prolonged and fractionated atrial endocardial electrograms, significantly longer P wave duration, and significantly longer intra-atrial and inter-atrial conduction time, and a higher incidence of sustained atrial fibrillation induction.