Prolapso y necrosis intestinal como complicación de un aborto

Prolapse and intestinal necrosis by uterine perforation, is a rare complication, very serious and avoidable, which occurs, usually as a result of the practice of a traumatic obstetric procedure, most of the time, by an instrumental uterine curettage, of an unsafe abortion, also known, as clandestine; in inadequate conditions, with instruments that are not correct, rather unfriendly and performed by unskilled personnel. The aim of this work is to present a clinical obstetric-surgical gynaecological case of prolapse and intestinal necrosis as a complication of an abortion and to perform a brief updated review of the literature. Materials and methods: A retrospective descriptive study was performed, presenting a clinical case. Informed consent and authorization were requested for publication of the case by the teaching and research department of the Alfredo G Paulson hospital. Case report: This was a 19-year-old female patient who underwent an unsafe abortion, where as a serious complication, she had uterine perforation, which led to evisceration of the small intestine, causing ischemia and necrosis thereof, What generated an emerging situation of high mortality, fortunately the timely intervention of a multidisciplinary team, provided good results. conclusions: Prolapse and intestinal necrosis through the vagina, is a potentially serious complication, which should be avoided, implementing control and safety measures for the patient, consider the risk factors that threaten the development of this adversity, drawing up a complete clinical history, using imaging tests, choosing an optimal location and the necessary equipment for performing surgical procedures, observation and continuous monitoring of the patient, in addition to having highly trained medical personnel, to solve an emergencyEl prolapso y necrosis intestinal por perforación uterina, es una complicación poco frecuente, muy grave y evitable, que se produce, generalmente a consecuencia de la práctica de un procedimiento obstétrico traumático, la mayoría de las veces, por un legrado uterino instrumental, de un aborto inseguro, conocido también, como clandestino; en condiciones inadecuadas, con instrumentos que no son los correctos, en lugar poco propicio y realizado por un personal no especializado. El objetivo de este trabajo es presentar un caso clínico gineco obstétrico- quirúrgico de prolapso y necrosis intestinal como complicación de un aborto y realizar una breve revisión actualizada de la literatura. Materiales y métodos: Se realizó un estudio descriptivo retrospectivo, presentación de caso clínico. Se solicitó el consentimiento informado y autorización, para publicación del caso por parte del departamento de docencia e investigación del hospital Alfredo G Paulson. Reporte de caso: Se trató de un paciente femenino, de 19 años, que se sometió, a la realización de un aborto inseguro, donde como complicación grave, tuvo perforación uterina, lo que produjo evisceración del intestino delgado, ocasionando isquemia y necrosis del mismo, lo que generó una situación emergente de alta mortalidad. Afortunadamente la intervención oportuna de un equipo multidisciplinario brindó buenos resultados. Discusión:  la importancia y relevancia de la presentación de este caso clínico, es dar a conocer las complicaciones que pueden ocurrir, si se realiza un procedimiento obstétrico en condiciones inadecuadas ; recalcar,  la necesidad de participación de un equipo multidisciplinario,  para resolver dicha eventualidad, cuya detección debe ser temprana y en un hospital que cuente con la complejidad resolutiva, tomando en consideración que, un prolapso y necrosis intestinal  a través de la vagina, no solo se puede manifestar por perforación uterina en un legrado, sino también, por otras causas; como perforación en la cúpula vaginal posterior a una histerectomía,  en pacientes que están expuestas a  radiación pélvica , por desgarro en la pared vaginal después de un parto, por hipoestrogenismo, entre otros.  conclusiones: El prolapso y necrosis intestinal a través de la vagina, es una complicación potencialmente grave,  que debe evitarse, implementando medidas de control y seguridad para el  paciente,  considerar los factores de riesgo  que amenazan el desarrollo de esta adversidad, elaborando historia clínica completa, uso de  exámenes imagenológicos,  elegir un lugar optimo y   los equipos necesarios para realización de los  procedimientos quirúrgicos, observación y monitorización continua  del paciente, además de contar con personal médico altamente  capacitado, para resolver una emergencia

Performance of the CMS Cathode Strip Chambers with Cosmic Rays

The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. Measured noise levels are low, with the number of noisy channels well below 1%. Coordinate resolution was measured for all types of chambers, and fall in the range 47 microns to 243 microns. The efficiencies for local charged track triggers, for hit and for segments reconstruction were measured, and are above 99%. The timing resolution per layer is approximately 5 ns

Mitigating effects of vaccination on influenza outbreaks given constraints in stockpile size and daily administration capacity

<p>Abstract</p> <p>Background</p> <p>Influenza viruses are a major cause of morbidity and mortality worldwide. Vaccination remains a powerful tool for preventing or mitigating influenza outbreaks. Yet, vaccine supplies and daily administration capacities are limited, even in developed countries. Understanding how such constraints can alter the mitigating effects of vaccination is a crucial part of influenza preparedness plans. Mathematical models provide tools for government and medical officials to assess the impact of different vaccination strategies and plan accordingly. However, many existing models of vaccination employ several questionable assumptions, including a rate of vaccination <it>proportional </it>to the population at each point in time.</p> <p>Methods</p> <p>We present a SIR-like model that explicitly takes into account vaccine supply and the <it>number </it>of vaccines administered per day and places data-informed limits on these parameters. We refer to this as the <it>non-proportional </it>model of vaccination and compare it to the proportional scheme typically found in the literature.</p> <p>Results</p> <p>The proportional and non-proportional models behave similarly for a few different vaccination scenarios. However, there are parameter regimes involving the vaccination campaign duration and daily supply limit for which the non-proportional model predicts smaller epidemics that peak later, but may last longer, than those of the proportional model. We also use the non-proportional model to predict the mitigating effects of variably timed vaccination campaigns for different levels of vaccination coverage, using specific constraints on daily administration capacity.</p> <p>Conclusions</p> <p>The non-proportional model of vaccination is a theoretical improvement that provides more accurate predictions of the mitigating effects of vaccination on influenza outbreaks than the proportional model. In addition, parameters such as vaccine supply and daily administration limit can be easily adjusted to simulate conditions in developed and developing nations with a wide variety of financial and medical resources. Finally, the model can be used by government and medical officials to create customized pandemic preparedness plans based on the supply and administration constraints of specific communities.</p

Performance and Operation of the CMS Electromagnetic Calorimeter

The operation and general performance of the CMS electromagnetic calorimeter using cosmic-ray muons are described. These muons were recorded after the closure of the CMS detector in late 2008. The calorimeter is made of lead tungstate crystals and the overall status of the 75848 channels corresponding to the barrel and endcap detectors is reported. The stability of crucial operational parameters, such as high voltage, temperature and electronic noise, is summarised and the performance of the light monitoring system is presented

Calibration of the CMS Drift Tube Chambers and Measurement of the Drift Velocity with Cosmic Rays

Peer reviewe

CMS Data Processing Workflows during an Extended Cosmic Ray Run

Peer reviewe

CMS physics technical design report : Addendum on high density QCD with heavy ions

Peer reviewe

Aligning the CMS Muon Chambers with the Muon Alignment System during an Extended Cosmic Ray Run

Peer reviewe

Alignment of the CMS muon system with cosmic-ray and beam-halo muons

This is the Pre-print version of the Article. The official published version of the Paper can be accessed from the link below - Copyright @ 2010 IOPThe CMS muon system has been aligned using cosmic-ray muons collected in 2008 and beam-halo muons from the 2008 LHC circulating beam tests. After alignment, the resolution of the most sensitive coordinate is 80 microns for the relative positions of superlayers in the same barrel chamber and 270 microns for the relative positions of endcap chambers in the same ring structure. The resolution on the position of the central barrel chambers relative to the tracker is comprised between two extreme estimates, 200 and 700 microns, provided by two complementary studies. With minor modifications, the alignment procedures can be applied using muons from LHC collisions, leading to additional significant improvements.This work is supported by FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR(Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTDS (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA)

Alignment of the CMS silicon tracker during commissioning with cosmic rays

This is the Pre-print version of the Article. The official published version of the Paper can be accessed from the link below - Copyright @ 2010 IOPThe CMS silicon tracker, consisting of 1440 silicon pixel and 15 148 silicon strip detector modules, has been aligned using more than three million cosmic ray charged particles, with additional information from optical surveys. The positions of the modules were determined with respect to cosmic ray trajectories to an average precision of 3–4 microns RMS in the barrel and 3–14 microns RMS in the endcap in the most sensitive coordinate. The results have been validated by several studies, including laser beam cross-checks, track fit self-consistency, track residuals in overlapping module regions, and track parameter resolution, and are compared with predictions obtained from simulation. Correlated systematic effects have been investigated. The track parameter resolutions obtained with this alignment are close to the design performance.This work is supported by FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTDS (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA)