Colombian consensus on the treatment of Placenta Accreta Spectrum (PAS)

Introducción: el espectro de acretismo placentario (EAP) es una condición asociada a sangrado masivo posparto y mortalidad materna. Las guías de manejo publicadas en países de altos ingresos recomiendan la participación de grupos interdisciplinarios en hospitales con recursos suficientes para realizar procedimientos complejos. Sin embargo, algunas de las recomendaciones de estas guías resultan difíciles de aplicar en países de bajos y medianos ingresos. Objetivos: este consenso busca formular recomendaciones generales para el tratamiento del EAP en Colombia. Materiales y métodos: en el consenso participaron 23 panelistas, quienes respondieron 31 preguntas sobre el tratamiento de EAP. Los panelistas fueron seleccionados con base en la participación en dos encuestas realizadas para determinar la capacidad resolutiva de hospitales en el país y la región. Se utilizó la metodología Delphi modificada, incorporando dos rondas sucesivas de discusión. Para emitir las recomendaciones el grupo tomó en cuenta la opinión de los participantes, que lograron un consenso mayor al 80 %, así como las barreras y los facilitadores para su implementación. Resultados: el consenso formuló cinco recomendaciones integrando las respuestas de los panelistas. Recomendación 1. Las instituciones de atención primaria deben realizar búsqueda activa de EAP en pacientes con factores de riesgo: placenta previa e historia de miomectomía o cesárea en embarazo previo. En caso de haber signos sugestivos de EAP por ecografía, las pacientes deben ser remitidas de manera inmediata, sin tener una edad gestacional mínima, a hospitales reconocidos como centros de referencia. Las modalidades virtuales de comunicación y atención en salud pueden facilitar la interacción entre las instituciones de atención primaria y los centros de referencia para EAP. Se debe evaluar el beneficio y riesgo de las modalidades de telemedicina. Recomendación 2. Es necesario que se definan hospitales de referencia para EAP en cada región de Colombia, asegurando el cubrimiento de la totalidad del territorio nacional. Es aconsejable concentrar el flujo de pacientes afectadas por esta condición en unos pocos hospitales, donde haya equipos de cirujanos con entrenamiento específico en EAP, disponibilidad de recursos especializados y un esfuerzo institucional por mejorar la calidad de atención, en busca de tener mejores resultados en la salud de las gestantes con esta condición. Para lograr ese objetivo los participantes recomiendan que los entes reguladores de la prestación de servicios de salud a nivel nacional, regional o local vigilen el proceso de remisión de estas pacientes, facilitando rutas administrativas en caso de que no exista contrato previo entre el asegurador y el hospital o la clínica seleccionada (IPS). Recomendación 3. En los centros de referencia para pacientes con EAP se invita a la creación de equipos que incorporen un grupo fijo de especialistas (obstetras, urólogos, cirujanos generales, radiólogos intervencionistas) encargados de atender todos los casos de EAP. Es recomendable que esos grupos interdisciplinarios utilicen el modelo de “paquete de intervención” como guía para la preparación de los centros de referencia para EAP. Este modelo consta de las siguientes actividades: preparación de los servicios, prevención e identificación de la enfermedad, respuesta ante la presentación de la enfermedad, aprendizaje luego de cada evento. La telemedicina facilita el tratamiento de EAP y debe ser tenida en cuenta por los grupos interdisciplinarios que atienden esta enfermedad. Recomendación 4. Los residentes de Obstetricia deben recibir instrucción en maniobras útiles para la prevención y el tratamiento del sangrado intraoperatorio masivo por placenta previa y EAP, tales como: la compresión manual de la aorta, el torniquete uterino, el empaquetamiento pélvico, el bypass retrovesical y la maniobra de Ward. Los conceptos básicos de diagnóstico y tratamiento de EAP deben incluirse en los programas de especialización en Ginecología y Obstetricia en Colombia. En los centros de referencia del EAP se deben ofrecer programas de entrenamiento a los profesionales interesados en mejorar sus competencias en EAP de manera presencial y virtual. Además, deben ofrecer soporte asistencial remoto (telemedicina) permanente a los demás hospitales en su región, en relación con pacientes con esa enfermedad. Recomendación 5. La finalización de la gestación en pacientes con sospecha de EAP y placenta previa, por imágenes diagnósticas, sin evidencia de sangrado vaginal activo, debe llevarse a cabo entre las semanas 34 y 36 6/7. El tratamiento quirúrgico debe incluir intervenciones secuenciales que pueden variar según las características de la lesión, la situación clínica de la paciente y los recursos disponibles. Las opciones quirúrgicas (histerectomía total y subtotal, manejo quirúrgico conservador en un paso y manejo expectante) deben incluirse en un protocolo conocido por todo el equipo interdisciplinario. En escenarios sin diagnóstico anteparto, es decir, ante un hallazgo intraoperatorio de EAP (evidencia de abultamiento violáceo o neovascularización de la cara anterior del útero), y con participación de personal no entrenado, se plantean tres situaciones: Primera opción: en ausencia de indicación de nacimiento inmediato o sangrado vaginal, se recomienda diferir la cesárea (cerrar la laparotomía antes de incidir el útero) hasta asegurar la disponibilidad de los recursos recomendados para llevar a cabo una cirugía segura. Segunda opción: ante indicación de nacimiento inmediato (por ejemplo, estado fetal no tranquilizador), pero sin sangrado vaginal o indicación de manejo inmediato de EAP, se sugiere realizar manejo en dos tiempos: se realiza la cesárea evitando incidir la placenta, seguida de histerorrafia y cierre de abdomen, hasta asegurar la disponibilidad de los recursos recomendados para llevar a cabo una cirugía segura. Tercera opción: en presencia de sangrado vaginal que hace imposible diferir el manejo definitivo de EAP, es necesario extraer el feto por el fondo del útero, realizar la histerorrafia y reevaluar. En ocasiones, el nacimiento del feto disminuye el flujo placentario y el sangrado vaginal se reduce o desaparece, lo que hace posible diferir el manejo definitivo de EAP. Si el sangrado significativo persiste, es necesario continuar con la histerectomía haciendo uso de los recursos disponibles: compresión manual de la aorta, llamado inmediato a los cirujanos con mejor entrenamiento disponible, soporte de grupos expertos de otros hospitales a través de telemedicina. Si una paciente con factores de riesgo para EAP (por ejemplo, miomectomía o cesárea previa) presenta retención de placenta posterior al parto vaginal, es recomendable confirmar la posibilidad de dicho diagnóstico (por ejemplo, realizando una ecografía) antes de intentar la extracción manual de la placenta. Conclusiones: esperamos que este primer consenso colombiano de EAP sirva como base para discusiones adicionales y trabajos colaborativos que mejoren los resultados clínicos de las mujeres afectadas por esta enfermedad. Evaluar la aplicabilidad y efectividad de las recomendaciones emitidas requerirá investigaciones adicionales.Q4Pacientes con Espectro de Acretismo Placentario (EAP)Introduction: Placenta accreta spectrum (PAS) is a condition associated with massive postpartum bleeding and maternal mortality. Management guidelines published in high income countries recommend the participation of interdisciplinary teams in hospitals with sufficient resources for performing complex procedures. However, some of the recommendations contained in those guidelines are difficult to implement in low and medium income countries. Objectives: The aim of this consensus is to draft general recommendations for the treatment of PAS in Colombia. Materials and Methods: Twenty-three panelists took part in the consensus with their answers to 31 questions related to the treatment of PAS. The panelists were selected based on participation in two surveys designed to determine the resolution capabilities of national and regional hospitals. The modified Delphi methodology was used, introducing two successive discussion rounds. The opinions of the participants, with a consensus of more than 80 %, as well as implementation barriers and facilitators, were taken into consideration in order to issue the recommendations. Results: The consensus drafted five recommendations, integrating the answers of the panelists. Recommendation 1. Primary care institutions must undertake active search of PAS in patients with risk factors: placenta praevia and history of myomectomy or previous cesarean section. In case of ultrasound signs suggesting PAS, patients must be immediately referred, without a minimum gestational age, to hospitals recognized as referral centers. Online communication and care modalities may facilitate the interaction between primary care institutions and referral centers for PAS. The risks and benefits of telemedicine modalities must be weighed. Recommendation 2. Referral hospitals for PAS need to be defined in each region of Colombia, ensuring coverage throughout the national territory. It is advisable to concentrate the flow of patients affected by this condition in a few hospitals with surgical teams specifically trained in PAS, availability of specialized resources, and institutional efforts at improving quality of care with the aim of achieving better health outcomes in pregnant women with this condition. To achieve this goal, participants recommend that healthcare regulatory agencies at a national and regional level should oversee the process of referral for these patients, expediting administrative pathways in those cases in which there is no prior agreement between the insurer and the selected hospital or clinic.Recommendation 3. Referral centers for patients with PAS are urged to build teams consisting of a fixed group of specialists (obstetricians, urologists, general surgeons, interventional radiologists) entrusted with the care of all PAS cases. It is advisable for these interdisciplinary teams to use the “intervention bundle” model as a guidance for building PAS referral centers. This model comprises the following activities: service preparedness, disease prevention and identification, response to the occurrence of the disease, and debriefing after every event. Telemedicine facilitates PAS treatment and should be taken into consideration by interdisciplinary teams caring for this disease. Recommendation 4. Obstetrics residents must be instructed in the performance of maneuvers that are useful for the prevention and treatment of massive intraoperative bleeding due to placenta praevia and PAS, including manual aortic compression, uterine tourniquet, pelvic packing, retrovesical bypass, and Ward maneuver. Specialization Obstetrics and Gynecology programs in Colombia must include the basic concepts of the diagnosis and treatment of PAS. Referral centers for PAS must offer online and in-person training programs for professionals interested in improving their competencies in PAS. Moreover, they must offer permanent remote support (telemedicine) to other hospitals in their region for patients with this condition. Recommendation 5. Patients suspected of having PAS and placenta praevia based on imaging, with no evidence of active vaginal bleeding, must be delivered between weeks 34 and 36 6/7. Surgical treatment must include sequential interventions that may vary depending on the characteristics of the lesion, the clinical condition of the patient and the availability of resources. The surgical options (total and subtotal hysterectomy, one-stage conservative surgical management and watchful waiting) must be included in a protocol known by the entire interdisciplinary team. In situations in which an antepartum diagnosis is lacking, that is to say, in the face of intraoperative finding of PAS (evidence of purple bulging or neovascularization of the anterior aspect of the uterus), and the participation of untrained personnel, three options are considered: Option 1: In the absence of indication of immediate delivery or of vaginal delivery, the recommendation is to postpone the cesarean section (close the laparotomy before incising the uterus) until the recommended resources for safe surgery are secured. Option 2: If there is an indication for immediate delivery (e.g., non-reassuring fetal status) but there is absence of vaginal bleeding or indication for immediate PAS management, a two-stage management is suggested: cesarean section avoiding placental incision, followed by uterine repair and abdominal closure, until the availability of the recommended resources for safe surgery is ascertained. Option 3: In the event of vaginal bleeding that prevents definitive PAS management, the fetus must be delivered through the uterine fundus, followed by uterine repair and reassessment of the situation. Sometimes, fetal delivery diminishes placental flow and vaginal bleeding is reduced or disappears, enabling the possibility to postpone definitive management of PAS. In case of persistent significant bleeding, hysterectomy should be performed, using all available resources: manual aortic compression, immediate call to the surgeons with the best available training, telemedicine support from expert teams in other hospitals.If a patient with risk factors for PAS (e.g., myomectomy or previous cesarean section) has a retained placenta after vaginal delivery, it is advisable to confirm the possibility of such diagnosis (by means of ultrasound, for example) before proceeding to manual extraction of the placenta.Conclusions: It is our hope that this first Colombian consensus on PAS will serve as a basis for additional discussions and collaborations that can result in improved clinical outcomes for women affected by this condition. Additional research will be required in order to evaluate the applicability and effectiveness of these recommendations.https://orcid.org/0000-0001-6822-0374Revista Nacional - IndexadaCN

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Measurement of the top quark mass using charged particles in pp collisions at root s=8 TeV

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Measurement of nuclear modification factors of gamma(1S)), gamma(2S), and gamma(3S) mesons in PbPb collisions at root s(NN)=5.02 TeV

The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead-lead (PbPb) and proton-proton (pp) collisions at √sNN = 5.02 TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-pp ratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) > RAA(ϒ(2S)) > RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN = 2.76 TeV, although the two are compatible within uncertainties. The upper limit on the RAA of ϒ(3S) integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date. © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.Peer reviewe

Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV

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Electroweak production of two jets in association with a Z boson in proton-proton collisions root s =13 TeV

A measurement of the electroweak (EW) production of two jets in association with a Z boson in proton-proton collisions at root s = 13 TeV is presented, based on data recorded in 2016 by the CMS experiment at the LHC corresponding to an integrated luminosity of 35.9 fb(-1). The measurement is performed in the lljj final state with l including electrons and muons, and the jets j corresponding to the quarks produced in the hard interaction. The measured cross section in a kinematic region defined by invariant masses m(ll) > 50 GeV, m(jj) > 120 GeV, and transverse momenta P-Tj > 25 GeV is sigma(EW) (lljj) = 534 +/- 20 (stat) fb (syst) fb, in agreement with leading-order standard model predictions. The final state is also used to perform a search for anomalous trilinear gauge couplings. No evidence is found and limits on anomalous trilinear gauge couplings associated with dimension-six operators are given in the framework of an effective field theory. The corresponding 95% confidence level intervals are -2.6 <cwww/Lambda(2) <2.6 TeV-2 and -8.4 <cw/Lambda(2) <10.1 TeV-2. The additional jet activity of events in a signal-enriched region is also studied, and the measurements are in agreement with predictions.Peer reviewe

Measurement of the Splitting Function in &ITpp &ITand Pb-Pb Collisions at root&ITsNN&IT=5.02 TeV

Data from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair. In central PbPb collisions, the splitting function indicates a more unbalanced momentum ratio, compared to peripheral PbPb and pp collisions.. The measurements are compared to various predictions from event generators and analytical calculations.Peer reviewe

Search for anomalous couplings in boosted WW/WZ -> l nu q(q)over-bar production in proton-proton collisions at root s=8TeV

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Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

Inclusive Search for a Highly Boosted Higgs Boson Decaying to a Bottom Quark-Antiquark Pair

© 2018 CERN. An inclusive search for the standard model Higgs boson (H) produced with large transverse momentum (pT) and decaying to a bottom quark-antiquark pair (bb) is performed using a data set of pp collisions at s=13 TeV collected with the CMS experiment at the LHC. The data sample corresponds to an integrated luminosity of 35.9 fb-1. A highly Lorentz-boosted Higgs boson decaying to bb is reconstructed as a single, large radius jet, and it is identified using jet substructure and dedicated b tagging techniques. The method is validated with Z→bb decays. The Z→bb process is observed for the first time in the single-jet topology with a local significance of 5.1 standard deviations (5.8 expected). For a Higgs boson mass of 125 GeV, an excess of events above the expected background is observed (expected) with a local significance of 1.5 (0.7) standard deviations. The measured cross section times branching fraction for production via gluon fusion of H→bb with reconstructed pT > 450 GeV and in the pseudorapidity range -2.5 < η < 2.5 is 74±48(stat)-10+17(syst) fb, which is consistent within uncertainties with the standard model prediction