sábado, 23 de septiembre de 2017

Premio Neer 2017: tasas de desgaste de las glenosferas de 32 mm y 40 mm en un modelo de simulación de desgaste de la artroplastia total reversa del hombro.


Neer Award 2017: wear rates of 32-mm and 40-mm glenospheres in a reverse total shoulder arthroplasty wear simulation model.

Fuente
Este artículo es publicado originalmente en:
De:
2017 Sep 8. pii: S1058-2746(17)30385-3. doi: 10.1016/j.jse.2017.06.036. [Epub ahead of print]
Todos los derechos reservados para:

Copyright © 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.


Abstract
BACKGROUND:
Larger glenosphere diameters have been used recently to increase prosthesis stability and impingement-free range of motion in reverse total shoulder arthroplasty. The goal of this study was to evaluate the rate of polyethylene wear for 32-mm and 40-mm glenospheres.
CONCLUSION:
Larger glenospheres underwent significantly greater polyethylene volume loss and volumetric wear rates, whereas smaller glenospheres underwent greater polyethylene surface deviations. The enhanced stability provided by larger glenospheres must be weighed against the potential for increased polyethylene wear.
Copyright © 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.
KEYWORDS:
Reverse total shoulder arthroplasty; bearing surface roughness; glenosphere size; in vitro wear simulation; micro-CT analysis; wear particle morphology
Resumen
ANTECEDENTES:
Los diámetros más grandes de la glenosfera se han utilizado recientemente para aumentar la estabilidad de la prótesis y el rango de movimiento libre de pinzamientos en la artroplastia total reversa del hombro. El objetivo de este estudio fue evaluar la tasa de desgaste de polietileno para las glenosferas de 32 mm y 40 mm.
CONCLUSIÓN:
Las glenosferas más grandes sufrieron una pérdida de volumen de polietileno significativamente mayor y tasas de desgaste volumétrico, mientras que las glenosferas más pequeñas sufrieron mayores desviaciones superficiales de polietileno. La estabilidad mejorada proporcionada por glenosferas más grandes se debe pesar contra el potencial para el desgaste creciente del polietileno.
Copyright © 2017 Revista de Cirugía de Hombro y Codo Junta de Fideicomisarios. Publicado por Elsevier Inc. Todos los derechos reservados.
PALABRAS CLAVE:
Artroplastia total del hombro reversa; rugosidad de la superficie de apoyo; tamaño de la glenosfera; simulación de desgaste in vitro; análisis de micro-TC; morfología de las partículas de desgaste
PMID:  28893545   DOI:  

Cultivos de rutina para artroplastia de hombro de revisión aparentemente aséptica: ¿son necesarios?


Routine cultures for seemingly aseptic revision shoulder arthroplasty: are they necessary?

Fuente
Este artículo es originalmente publicado en:
De:
2017 Aug 30. pii: S1058-2746(17)30427-5. doi: 10.1016/j.jse.2017.07.006. [Epub ahead of print]
Todos los derechos reservados para:

Copyright © 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.


Abstract
Propionibacterium acnes has recently gained attention as the leading cause of periprosthetic joint infections (PJIs) after shoulder arthroplasty. Unlike PJIs in the lower extremity, PJIs after shoulder arthroplasty usually have an indolent course and are notoriously difficult to diagnose. Most of the time, the diagnosis is made after positive intraoperative cultures are taken at the time of revision surgery. Adding even more complexity to the diagnosis is the high rate of P acnes-positive cultures taken at the time of primary shoulder surgery. In many cases the preoperative workup yields no suspicion for infection; however, intraoperative cultures are taken to completely eliminate the potential of an ongoing indolent infection. Concerns over how to interpret positive P acnes culture results and the high rate of culture positivity in primary shoulderarthroplasty, as well as the potentially high rate of contamination, have led surgeons to wonder about the utility of obtaining intraoperative cultures at the time of revision shoulder arthroplasty. We present evidence for and against the practice of obtaining routine intraoperative cultures at the time of seemingly aseptic revision shoulder arthroplasty.
Copyright © 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.
KEYWORDS:
Propionibacterium acnes; Reverse total shoulder arthroplasty; intraoperative cultures; periprosthetic joint infections; revision shoulder arthroplasty; total shoulder arthroplasty
PMID: 28865964   DOI:  
Resumen
Propionibacterium acnes ha ganado recientemente atención como la principal causa de infecciones articulares periprotésicas (PJIs) después de la artroplastia del hombro. A diferencia de los PJI en la extremidad inferior, los PJI después de la artroplastia del hombro generalmente tienen un curso indolente y son notoriamente difíciles de diagnosticar. La mayoría de las veces, el diagnóstico se realiza después de que los cultivos intraoperatorios positivos se toman en el momento de la cirugía de revisión. Añadir aún más complejidad al diagnóstico es la alta tasa de P acnes-positivas culturas tomadas en el momento de la cirugía primaria del hombro. En muchos casos, el tratamiento preoperatorio no produce sospecha de infección; sin embargo, los cultivos intraoperatorios se toman para eliminar completamente el potencial de una infección indolente en curso. Las preocupaciones sobre cómo interpretar los resultados positivos de la cultura P acnes y la alta tasa de positividad del cultivo en la artroplastia primaria del hombro, así como la tasa potencialmente alta de contaminación, han llevado a los cirujanos a preguntarse sobre la utilidad de obtener cultivos intraoperatorios en el momento del hombro de revisión artroplastia Presentamos evidencia a favor y en contra de la práctica de obtener cultivos intraoperatorios de rutina en el momento de la artroplastia de hombro de revisión aséptica aparentemente.
Copyright © 2017 Revista de Cirugía de Hombro y Codo Junta de Fideicomisarios. Publicado por Elsevier Inc. Todos los derechos reservados.
PALABRAS CLAVE:
Propionibacterium acnes; Artroplastia total del hombro reverso; cultivos intraoperatorios; infecciones articulares periprotésicas; artroplastia de hombro de revisión; artroplastia total del hombro
PMID: 28865964 DOI: 10.1016 / j.jse.2017.07.006

Sismos y huracanes / Earthquakes and hurricanes

Septiembre 23, 2017. No. 2820





No obstante la destrucción en muchos sitios de México por los huracanes y los sismos recientes, nuestro país sigue recuperándose gracias a millares de muestras solidarias de apoyo entre cada mexicano y personas allende de nuestras fronteras que, trabajando codo con codo, han ido rescatando a cientos de personas donde la muerte se hacía inminente.
Tenemos una sola meta y el camino para alcanzarla está lleno de sonrisas, apoyos y obstáculos. México está de pie, y en esta ocasión más unido que nunca. Mil gracias por darnos su apoyo.

Despite the destruction in many places of Mexico due to recent hurricanes and earthquakes, our country continues to recover thanks to thousands of solidarity samples of support between each Mexican and people beyond our borders who, working side by side, have been rescuing hundreds of people where death was imminent.
We have only one goal and the way to reach it is full of smiles, supports and obstacles. Mexico is standing, and this time more united than ever. Thank you for giving us your help.

Apesar da destruição em muitos lugares do México devido a furacões e terremotos recentes, nosso país continua a recuperar graças a milhares de amostras solidárias de apoio entre cada mexicano e pessoas além de nossas fronteiras que, trabalhando lado a lado, estão resgatando centenas de pessoas onde a morte era iminente.
Temos apenas um objetivo e a maneira de alcançá-lo é cheia de sorrisos, apoios e obstáculos. O México está de pé, e desta vez mais unido do que nunca. Obrigado por nos dar sua ajuda.

En dépit de la destruction dans de nombreux endroits du Mexique en raison des récents ouragans et tremblements de terre, notre pays continue de se remettre grâce à des milliers d'échantillons de solidarité entre chaque Mexicain et des personnes au-delà de nos frontières qui, travaillant côte à côte, ont sauvé des centaines des personnes où la mort était imminente.
Nous n'avons qu'un seul objectif et la façon de l'atteindre est pleine de sourires, de soutiens et d'obstacles. Le Mexique est debout, et cette fois plus unis que jamais. Merci de nous avoir donné votre aide.

Enlaces para donar / Links to donate
Respuestas tempranas de la unidades de terapia intensiva durante los desastres mayores. De las experiencias del gran terremoto en Japón
EARLY STAGE RESPONSES OF INTENSIVE CARE UNITS DURING MAJOR DISASTERS: FROM THE EXPERIENCES OF THE GREAT EAST JAPAN EARTHQUAKE.
Abstract
Fukushima J Med Sci. 2015;61(1):32-7. doi: 10.5387/fms.2014-35. Epub 2015 May 3.
The present study investigated the role of intensive care units (ICU) during disasters, including the responses of our ICU following the Great East Japan Earthquake on March 11, 2011. Our ICU comprises 8 beds for postoperative inpatients and those with rapidly deteriorating conditions; 20 beds in an emergency unit for critically ill patients; and 17 beds for neonates. It is important to secure empty beds when a major disaster occurs, as was the case after the Great Hanshin Earthquake, due to the resulting large numbers of trauma patients. Therefore, each ICU section cooperated to ensure sufficient space for admissions following the Great East Japan Earthquake. However, unlike the Great Hanshin Earthquake, securing beds was ultimately unnecessary due to the nature of the recent disaster, which also consisted of a subsequent tsunami and nuclear accident. Therefore, air quality monitoring was required on this occasion due to the risk of environmental radioactive pollution from the nuclear disaster causing problems with artificial respiration management involving atmospheric air. The variability in damage arising during different disasters thus requires a flexible response from ICUs that handle seriously ill patients.
Evacuación de una UCI neonatal en un desastre. Lecciones del huracán Sandy
Evacuation of a neonatal intensive care unit in a disaster: lessons from Hurricane Sandy.
Pediatrics. 2014 Dec;134(6):e1662-9. doi: 10.1542/peds.2014-0936. Epub 2014 Nov 10.Abstract
NICU patients are among those potentially most vulnerable to the effects of natural or man-made disaster on a medical center. The published data on evacuations of NICU patients in the setting of disaster are sparse. In October of 2012, New York University Langone Medical Center was evacuated during Hurricane Sandy in the setting of a power outage secondary to a coastal surge. In this setting, 21 neonates were safely evacuated from the medical center's NICU to receiving hospitals within New York City in a span of 4.5 hours. Using data recorded during the evacuation and from staff debriefings, we describe the challenges faced and lessons learned during both the power outage and vertical evacuation. From our experience, we identify several elements that are important to the functioning of an NICU in a disaster or to an evacuation that may be incorporated into future NICU-focused disaster planning. These include a clear command structure, backups (personnel, communication, medical information, and equipment), establishing situational awareness, regional coordination, and flexibility as well as special attention to families and to the availability of neonatal transport resources.
KEYWORDS: Hurricane Sandy; NICU; disaster preparedness; neonates; neonatology; power outage; vertical evacuation
Evacuación de la UCI: cuidado de los enfermos críticos y heridos durante pandemias y desastres: Declaración de consenso de CHEST.
Evacuation of the ICU: care of the critically ill and injured during pandemics and disasters: CHEST consensus statement.
Chest. 2014 Oct;146(4 Suppl):e44S-60S. doi: 10.1378/chest.14-0735.
Abstract
BACKGROUND: Despite the high risk for patient harm during unanticipated ICU evacuations, critical care providers receive little to no training on how to perform safe and effective ICU evacuations. We reviewed the pertinent published literature and offer suggestions for the critical care provider regarding ICU evacuation. The suggestions in this article are important for all who are involved in pandemics or disasters with multiple critically ill or injured patients, including front-line clinicians, hospital administrators, and public health or government officials. METHODS: The Evacuation and Mobilization topic panel used the American College of Chest Physicians (CHEST) Guidelines Oversight Committee's methodology to develop seven key questions for which specific literature searches were conducted to identify studies upon which evidence-based recommendations could be made. No studies of sufficient quality were identified. Therefore, the panel developed expert opinion-based suggestions using a modified Delphi process. RESULTS: Based on current best evidence, we provide 13 suggestions outlining a systematic approach to prepare for and execute an effective ICU evacuation during a disaster. Interhospital and intrahospital collaboration and functional ICU communication are critical for success. Pre-event planning and preparation are required for a no-notice evacuation. A Critical Care Team Leader must be designated within the Hospital Incident Command System. A three-stage ICU Evacuation Timeline, including (1) no immediate threat, (2) evacuation threat, and (3) evacuation implementation, should be used. Detailed suggestions on ICU evacuation, including regional planning, evacuation drills, patient transport preparation and equipment, patient prioritization and distribution for evacuation, patient information and tracking, and federal and international evacuation assistance systems, are also provided. CONCLUSIONS: Successful ICU evacuation during a disaster requires active preparation, participation, communication, and leadership by critical care providers. Critical care providers have a professional obligation to become better educated, prepared, and engaged with the processes of ICU evacuation to provide a safe continuum of critical care during a disaster.

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