Impacto de la pandemia COVID-19 en la atención al paciente con cefalea en España : análisis de situación con una mirada al futuro

La infección por SARS-CoV-2 ha tenido un enorme impacto en los sistemas sanitarios. España, donde la cefalea constituye el motivo principal de consulta ambulatoria en Neurología, es uno de los países con más casos notificados. Conocer el impacto de la pandemia COVID-19 en las Unidades de Cefaleas en España y evaluar cómo imaginan el futuro de estas estructuras los neurólogos responsables. Estudio transversal mediante encuesta online distribuida a los responsables de las Unidades, realizada durante la sexta semana del estado de alarma. La tasa de respuesta fue del 74%, con participación de centros de diferentes características y de todas las Comunidades Autónomas. El 95,8% describió limitaciones en la actividad presencial, un 60,4% mantuvo la consulta presencial preferente y el 45,8% los procedimientos urgentes. En el 91,7% de los centros la actividad presencial cancelada se sustituyó por consulta telefónica. El 95,8% de los encuestados afirmó que empleará material de protección personal en el futuro y el 86% pretende incorporar en mayor medida la telemedicina. La mayoría prevé un incremento en las listas de espera (93,8% en primeras visitas, 89,6% en revisiones y 89,4% en procedimientos) y una peor situación clínica de los pacientes, pero solo un 15% cree que su estructura asistencial se verá debilitada. Como consecuencia de la pandemia, la actividad asistencial e investigadora en cefaleas se ha reducido de manera notable. Esto pone de manifiesto la necesidad de un incremento de la oferta de telemedicina en nuestros centros en un futuro cercano

Vertical characterization of fine and coarse dust particles during an intense Saharan dust outbreak over the Iberian Peninsula in springtime 2021

An intense and long-lasting Saharan dust outbreak crossed the Iberian Peninsula (IP) from the southwest (SW) to the northeast (NE) from 25 March until 7 April 2021. This work aims to assess the optical and mass contribution of both fine and coarse dust particles along their transport. Five Iberian lidar stations were monitoring the transport and evolution of the Saharan dust particles, i.e. El Arenosillo/Huelva, Granada, Torrejón/Madrid and Barcelona in Spain, and Évora in Portugal. The particular meteorological conditions determined the aerosol scenario along the overall dust event, differing in the first part of the event (25–31 March), in which the strongest dust incidence occurred on 29–31 March at the south and central stations and 1 April at Barcelona, from the second one (1–7 April). The use of the two-step POLIPHON algorithm showed the relevance of using polarized lidar measurements for separating the aerosol properties of dust fine and coarse particles as an added value. Both the fine dust (Df) and coarse dust (Dc) components of the total particle backscatter coefficient (total dust, DD¿=¿Dc¿+¿Df) were separately derived. The dust plume was well-mixed with height and no significant differences were found in the vertical structure of both the Dc and Df particle backscatter coefficients. From the beginning of the dust outbreak until 1 April, the vertical Df¿¿DD mass ratio was nearly constant in time at each station and also in altitude with values of ~¿10¿%. Moreover, the mean dust optical depth at 532¿nm was decreasing along that dust pathway, reporting values from SW to NE stations of 0.34 at El Arenosillo/Huelva, 0.28 at Granada, 0.20 at Évora, 0.28 at Torrejón/Madrid, and 0.14 at Barcelona, although its Df¿¿DD ratio remained almost constant (28¿%–30¿%). A similar pattern was found for the total dust mass loading and its Df¿¿DD ratio, i.e. mostly decreasing mean mass values were reported, being constant in its Df¿¿DD ratio (~¿10¿%) along the SW–NE dust pathway. In addition, the episode-mean centre-of-mass height increased with latitude overall, showing a high variability, being greater than 0.5¿km at the southern sites (El Arenosillo/Huelva, Granada, Évora) and ~¿1.0¿km at Torrejón/Madrid and Barcelona. However, despite the relatively high intensity of the dust intrusion, the expected ageing of the dust particles was hardly observed, by taking into account the minor changes found in the contribution and properties of the coarse and fine dust particles. This is on the basis that the IP is relatively close to the Saharan dust sources and then, under certain dust transport conditions, any potential ageing processes in the dust particles remained unappreciated. The following must be highlighted: the different relative contribution of the fine dust particles to the total dust found for their optical properties (~¿30¿%) associated with the radiative effect of dust, with respect to that for the mass features (~¿10¿%) linked to air quality issues, along the overall dust event by crossing the IP.This research has been supported by the Spanish Ministry of Science and Innovation (grant no. PID2019-104205GB-C21/AEI/10.13039/501100011033).Peer ReviewedPostprint (published version

Constraints on the χ_(c1) versus χ_(c2) polarizations in proton-proton collisions at √s = 8 TeV

The polarizations of promptly produced χ_(c1) and χ_(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at √s=8  TeV. The χ_c states are reconstructed via their radiative decays χ_c → J/ψγ, with the photons being measured through conversions to e⁺e⁻, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the χ_(c2) to χ_(c1) yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the J/ψ → μ⁺μ⁻ decay, in three bins of J/ψ transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum

Telemedicine in the management of patients with headache: current situation and recommendations of the Spanish Society of Neurology's Headache Study Group

Introducción: La pandemia COVID-19 ha provocado un inusitado impulso a la telemedicina (TM). Analizamos el impacto de la pandemia en la TM aplicada en las consultas de cefaleas españolas, revisamos la literatura y lanzamos unas recomendaciones para implantar la TM en las consultas. Método: Tres fases: 1) Revisión de la base Medline desde el año 1958 (primera experiencia de TM); 2) Formulario Google Forms enviado a todos los neurólogos del Grupo de Estudio de Cefaleas de la Sociedad Española de Neurología (GECSEN), y 3) Consenso on-line de expertos GECSEN para emitir recomendaciones para implantar la TM en España. Resultados: La pandemia por COVID-19 ha empeorado los tiempos de espera presenciales, incrementando el uso de todas las modalidades de TM antes y después de abril de 2020: teléfono fijo (del 75% al 97%), teléfono móvil (del 9% al 27%), correo electrónico (del 30% al 36%) y videoconsulta (del 3% al 21%). Los neurólogos son conscientes de la necesidad de ampliar la oferta con videoconsultas, claramente in crescendo, y otras herramientas de e-health y m-health. Conclusiones: Desde el GECSEN recomendamos y animamos a todos los neurólogos que asisten a pacientes con cefaleas a implantar recursos de TM, teniendo como objetivo óptimo la videoconsulta en menores de 60-65 años y la llamada telefónica en mayores, si bien cada caso debe individualizarse. Se deberá contar previamente con la aprobación y asesoramiento de los servicios jurídicos e informáticos y de la dirección del centro. La mayoría de los pacientes con cefalea y/o neuralgia estable son candidatos a seguimiento mediante TM, tras una primera visita que tiene que ser siempre presencial.Introduction: The COVID-19 pandemic has caused an unexpected boost to telemedicine. We analyse the impact of the pandemic on telemedicine applied in Spanish headache consultations, review the literature, and issue recommendations for the implementation of telemedicine in consultations. Method: The study comprised 3 phases: 1) review of the MEDLINE database since 1958 (first reported experience with telemedicine); 2) Google Forms survey sent to all members of the Spanish Society of Neurology's Headache Study Group (GECSEN); and 3) online consensus of GECSEN experts to issue recommendations for the implementation of telemedicine in Spain. Results: COVID-19 has increased waiting times for face-to-face consultations, increasing the use of all telemedicine modalities: landline telephone (from 75% before April 2020 to 97% after), mobile telephone (from 9% to 27%), e-mail (from 30% to 36%), and video consultation (from 3% to 21%). Neurologists are aware of the need to expand the availability of video consultations, which are clearly growing, and other e-health and m-health tools. Conclusions: The GECSEN recommends and encourages all neurologists who assist patients with headaches to implement telemedicine resources, with the optimal objective of offering video consultation to patients under 60-65 years of age and telephone calls to older patients, although each case must be considered on an individual basis. Prior approval and advice must be sought from legal and IT services and the centre's management. Most patients with stable headache and/or neuralgia are eligible for telemedicine follow-up, after a first consultation that must always be held in person

A methodology for investigating dust model performance using synergistic EARLINET/AERONET dust concentration retrievals

Systematic measurements of dust concentration profiles at a continental scale were recently made possible by the development of synergistic retrieval algorithms using combined lidar and sun photometer data and the establishment of robust remote-sensing networks in the framework of Aerosols, Clouds, and Trace gases Research Infra-Structure Network (ACTRIS)/European Aerosol Research Lidar Network (EARLINET). We present a methodology for using these capabilities as a tool for examining the performance of dust transport models. The methodology includes considerations for the selection of a suitable data set and appropriate metrics for the exploration of the results. The approach is demonstrated for four regional dust transport models (BSC-DREAM8b v2, NMMB/BSC-DUST, DREAM-ABOL, DREAM8-NMME-MACC) using dust observations performed at 10 ACTRIS/EARLINET stations. The observations, which include coincident multi-wavelength lidar and sun photometer measurements, were processed with the Lidar-Radiometer Inversion Code (LIRIC) to retrieve aerosol concentration profiles. The methodology proposed here shows advantages when compared to traditional evaluation techniques that utilize separately the available measurements such as separating the contribution of dust from other aerosol types on the lidar profiles and avoiding model assumptions related to the conversion of concentration fields to aerosol extinction values. When compared to LIRIC retrievals, the simulated dust vertical structures were found to be in good agreement for all models with correlation values between 0.5 and 0.7 in the 1-6 km range, where most dust is typically observed. The absolute dust concentration was typically underestimated with mean bias values of -40 to -20 mu g m(-3) at 2 km, the altitude of maximum mean concentration. The reported differences among the models found in this comparison indicate the benefit of the systematic use of the proposed approach in future dust model evaluation studies

Guide to the alien and invasive species of rivers, lakes and estuaries in the Iberian Peninsula.

Guide to the alien and invasive species of rivers, lakes and estuaries in the Iberian Peninsula

Binary systems and their nuclear explosions

Peer ReviewedPreprin