Aortic arch rupture after multiple multilayer stent treatment of a thoracoabdominal aneurysm

Despite the improvement in diagnostic and therapeutic strategies, the treatment of thoracoabdominal aneurysms is still burdened with a high incidence of peri/postoperative morbidity and mortality. The multilayer flow modulator is a new and promising technique for the treatment of such disease; however, some limits are still evident. We report the case of a 76-year-old woman affected by a symptomatic thoracoabdominal aneurysm treated with multiple Cardiatis multilayer flow modulators complicated by aortic arch rupture on the fifth postoperative day, with subsequent patient death

Implementación de una historia clínica informática en unidades febriles de urgencia

El sistema público de Salud de la Ciudad Autónoma de Buenos Aires (CABA) está conformado por el Ministerio de Salud y 114 centros sanitarios organizados en 12 áreas geográficas para proveer la asistencia de salud. Dicho sistema tiene un total de 41000 empleados. Desde el 2016 se viene implementando gradualmente en la ciudad un registro de salud integral en el entorno ambulatorio. Durante la pandemia de COVID-19 el sistema de salud público de la CABA implementó 19 Unidades Febriles de Urgencias (UFU) próximas a los Hospitales de Agudos, y hospitales especializados de la ciudad para la atención de pacientes con síntomas compatibles con la sospecha de infección por COVID-19. Estas UFU cuentan con una recepción de enfermería donde se realiza un TRIAGE que define la derivación a una atención médica con eventual toma de muestra por hisopado para realización de PCR y aislamiento temporal hasta la definición del resultado. La solución informática utilizada en las UFU es SIGEHOS, el Sistema de Información Sanitario implementado en el ámbito ambulatorio del sistema público de Salud de la Ciudad. Esto permitió contar con información integral de salud de las personas que ya se atendían en la ciudad previamente. Este trabajo describe, tomando como guía el modelo conceptual sociotécnico de Sittig y Singh, los pasos que se llevaron a cabo para implementar el registro electrónico en estas Unidades durante una situación de emergencia sanitaria, así como la estrategia de soporte que se implementó para poder desarrollar la actividad de una manera óptima.Sociedad Argentina de Informática e Investigación Operativ

Emerging Non-Anomalous Baryonic Symmetries in the AdS_5/CFT_4 Correspondence

We study the breaking of baryonic symmetries in the AdS_5/CFT_4 correspondence for D3 branes at Calabi-Yau three-fold singularities. This leads, for particular VEVs, to the emergence of non-anomalous baryonic symmetries during the renormalization group flow. We claim that these VEVs correspond to critical values of the B-field moduli in the dual supergravity backgrounds. We study in detail the C^3/Z_3 orbifold, the cone over F_0 and the C^3/Z_5 orbifold. For the first two examples, we study the dual supergravity backgrounds that correspond to the breaking of the emerging baryonic symmetries and identify the expected Goldstone bosons and global strings in the infra-red. In doing so we confirm the claim that the emerging symmetries are indeed non-anomalous baryonic symmetries.Comment: 65 pages, 15 figures;v2: minor changes, published versio

Baryonic symmetries and M5 branes in the AdS_4/CFT_3 correspondence

We study U(1) symmetries dual to Betti multiplets in the AdS_4/CFT_3 correspondence for M2 branes at Calabi-Yau four-fold singularities. Analysis of the boundary conditions for vector fields in AdS_4 allows for a choice where wrapped M5 brane states carrying non-zero charge under such symmetries can be considered. We begin by focusing on isolated toric singularities without vanishing six-cycles, and study in detail the cone over Q^{111}. The boundary conditions considered are dual to a CFT where the gauge group is U(1)^2 x SU(N)^4. We find agreement between the spectrum of gauge-invariant baryonic-type operators in this theory and wrapped M5 brane states. Moreover, the physics of vacua in which these symmetries are spontaneously broken precisely matches a dual gravity analysis involving resolutions of the singularity, where we are able to match condensates of the baryonic operators, Goldstone bosons and global strings. We also argue more generally that theories where the resolutions have six-cycles are expected to receive non-perturbative corrections from M5 brane instantons. We give a general formula relating the instanton action to normalizable harmonic two-forms, and compute it explicitly for the Q^{222} example. The holographic interpretation of such instantons is currently unclear.Comment: 92 pages, 10 figure

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