Epidemiology of fungal infection in COVID 19 in Spain during 2020 and 2021: a nationwide study.

We realize a nationwide population-based retrospective study to analyze the characteristics and risk factors of fungal co-infections in COVID-19 hospitalized patients as well as describe their causative agents in the Spanish population in 2020 and 2021. Data were obtained from records in the Minimum Basic Data Set of the National Surveillance System for Hospital Data in Spain, provided by the Ministry of Health, and annually published with two years lag. The assessment of the risk associated with the development of healthcare-associated fungal co-infections was assessed using an adjusted logistic regression model. The incidence of fungal co-infection in COVID-19 hospitalized patients was 1.41%. The main risk factors associated were surgery, sepsis, age, male gender, obesity, and COPD. Co-infection was associated with worse outcomes including higher in-hospital and in ICU mortality, and higher length of stay. Candida spp. and Aspergillus spp. were the microorganisms more frequent. This is the first study analyzing fungal coinfection at a national level in hospitalized patients with COVID-19 in Spanish population and one of the few studies available that demonstrate that surgery was an independent risk factor of Aspergillosis coinfection in COVID-19 patients.

Affine diffractive beam dividers.

Diffractive optical elements that divide an input beam into a set of replicas are used in many optical applications ranging from image processing to communications. Their design requires time-consuming optimization processes, which, for a given number of generated beams, are to be separately treated for one-dimensional and two-dimensional cases because the corresponding optimal efficiencies may be different. After generalizing their Fourier treatment, we prove that, once a particular divider has been designed, its transmission function can be used to generate numberless other dividers through affine transforms that preserve the efficiency of the original element without requiring any further optimization.

Three-dimensional polarization of fields radiated by partially coherent electromagnetic cylindrical sources.

Partially coherent electromagnetic sources with cylindrical symmetry and infinite extent radiating outward are introduced. Their 3 × 3 cross-spectral density matrix is given through expansions of the field components in terms of basis functions related to the Hankel functions. The spectral density and the three-dimensional degree of polarization of such sources and the fields they radiate are examined. Several examples are presented and discussed. Among them, a class of cylindrical sources whose coherent vector modes coincide with the above basis functions is defined and studied.

Epidemiology of bacterial co-infections and risk factors in COVID-19-hospitalized patients in Spain: a nationwide study.

BACKGROUND: We performed a nationwide population-based retrospective study to describe the epidemiology of bacterial co-infections in coronavirus disease 2019 (COVID-19)-hospitalized patients in Spain in 2020. We also analyzed the risk factors for co-infection, the etiology and the impact in the outcome. METHODS: Data were obtained from records in the Minimum Basic Data Set (MBDS) of the National Surveillance System for Hospital Data in Spain, provided by the Ministry of Health and annually published with 2 years lag. COVID-19 circulated in two waves in 2020: from its introduction to 31st June and from 1st July to 31st December. The risk of developing a healthcare-associated bacterial co-infection and the risk for in-hospital and intensive care unit (ICU) mortality in co-infected patients was assessed using an adjusted logistic regression model. RESULTS: The incidence of bacterial co-infection in COVID-19 hospitalized patients was 2.3%. The main risk factors associated with bacterial co-infection were organ failure, obesity and male sex. Co-infection was associated with worse outcomes including higher in-hospital, in-ICU mortality and higher length of stay. Gram-negative bacteria caused most infections. Causative agents were similar between waves, although higher co-infections with Pseudomonas spp. were detected in the first wave and with Haemophilus influenzae and Streptococcus pneumoniae in the second. CONCLUSIONS: Co-infections are not as common as those found in other viral respiratory infections; therefore, antibiotics should be used carefully. Screening for actual co-infection to prescribe antibiotic therapy when required should be performed.

Epidural analgesia in a patient with factor XI deficit.

FXI deficiency is a rare bleeding disorder characterised by a decreased level or activity of factor. Pregnant women are at increased risk of uterine bleeding during childbirth. Neuroaxial analgesia may increase the risk of epidural hematoma in these patients. However, there is no consensus on the anaesthetic management. We present the clinical case of a 36-year-old woman with a personal history of factor XI deficiency, pregnant with 38 weeks gestation who is scheduled to perform birth induction. Pre-induction factor levels were measured. They were less than 40%, so it was decided to transfuse 20 ml/kg of fresh frozen plasma. After the transfusion it had levels greater than 40%, so epidural analgesia was performed without incident. The patient had no complications secondary to epidural analgesia or transfusion of a high volume of plasma.

Analgesia epidural en paciente con déficit de factor XI / Epidural analgesia in a patient with factor XI deficit

El déficit de factorXI es una enfermedad hemorrágica rara que se caracteriza por presentar disminución del nivel o de la actividad del factor. Las mujeres embarazadas con esta patología presentan mayor riesgo de sangrado uterino durante el parto. El uso de analgesia neuroaxial en estas pacientes puede aumentar el riesgo de producir hematoma epidural. Es necesario realizar un seguimiento multidisciplinar en el que participen activamente anestesiólogos, hematólogos y ginecólogos. Actualmente disponemos de escasa bibliografía sobre el manejo anestésico de este tipo de patología. Presentamos el caso clínico de una mujer de 36años con antecedentes personales de déficit de factorXI, embarazada de 38 semanas de gestación que es programada para realización de inducción del parto. Previamente a la inducción se midieron los niveles del factor, y al ser inferiores al 40% se decidió transfundir 20ml/kg de plasma fresco congelado. Tras la transfusión presentó niveles superiores al 40%, por lo que se realizó analgesia epidural sin incidencias. La paciente no presentó complicaciones secundarias a la analgesia epidural ni a la transfusión de un volumen elevado de plasma.(AU)

Factor XI deficiency is a rare bleeding disorder characterized by a decreased level or activity of factor. Pregnant women are at increased risk of uterine bleeding during childbirth. Neuroaxial analgesia may increase the risk of epidural hematoma in these patients. However, there is no consensus on the anesthetic management. We present the clinical case of a 36-year-old woman with a personal history of factorXI deficiency, pregnant with 38weeks gestation who is scheduled to perform birth induction. Pre-induction factor levels were measured. They were less than 40%, so it was decided to transfuse 20mL/kg of fresh frozen plasma. After the transfusion it had levels greater than 40%, so epidural analgesia was performed without incident. The patient had no complications secondary to epidural analgesia or transfusion of a high volume of plasma.(AU)

Beneficios de los bloqueos analgésicos, PENG (PEricapsular Nerve Group), en la recuperación precoz tras la cirugía de cadera / Benefits of analgesic blocks, PENG block (PEricapsular Nerve Group), in fast recovery after hip surgery

Introducción: La fractura de cadera es una emergencia ortopédica frecuente que asocia elevada morbimortalidad y dolor intenso. Las técnicas analgo-anestésicas locorregionales, tanto centrales como periféricas, ocupan un lugar preferente dentro del arsenal terapéutico multimodal. A los bloqueos clásicos se ha sumado recientemente el bloqueo pericapsular, o PENG (PEricapsular Nerve Group). El objetivo es evaluar en pacientes con fractura de cadera la eficacia antinociceptiva del bloqueo PENG preoperatorio, el bloqueo motor residual y el tiempo necesario para la recuperación funcional postoperatoria. Material y métodos: Estudio observacional descriptivo prospectivo en pacientes programados para artroplastia total de cadera. El bloqueo PENG se realizó previo a la cirugía. Se evaluó el dolor con escala visual numérica (EVN) antes de la realización del bloqueo, 30minutos después, en el postoperatorio inmediato y a las 24horas de la intervención, el grado de bloqueo motor según la escala de Bromage y el tiempo necesario para la deambulación asistida. Resultados: En todos los pacientes el bloqueo PENG proporcionó analgesia eficaz. Logró disminuir 3 o más puntos la EVN en todos los momentos evaluados. La diferencia media entre el dolor previo y posterior al bloqueo fue de 7,5 puntos en la EVN, lo que permitió el traslado y la colocación del paciente sin alteración hemodinámica, exacerbación del dolor, ni otras complicaciones. Conclusiones: El bloqueo PENG es una técnica analgésica regional efectiva y segura para pacientes con fractura de cadera; facilita la movilización y la colocación previa a la cirugía sin exacerbación del dolor, y favorece una temprana movilidad y rehabilitación.

Introduction: Hip fracture is a frequent orthopedic emergency which associates high morbidity and mortality and intense pain. Locoregional analgo-anesthetic techniques, both central and peripheral, occupy a preferential place in the multimodal therapeutic arsenal. Recently, a new regional blockade has emerged, the pericapsular block or PENG block (PEricapsular Nerve Group). The objective is to evaluate in patients with hip fracture, the antinociceptive efficacy of the preoperative PENG block, residual motor block and time for postoperative functional recovery. Method and materials: Prospective descriptive observational study with patients going to have total hip arthroplasty. PENG block was performed before surgery. Pain was assessed with the Visual Numerical Scale (VNS) before the blockade, 30min later, in the immediate postoperative period and 24h after the intervention. Motor block according to the Bromage scale and time needed for assisted walking were also evaluated. Results: PENG block provided effective analgesia in all patients, with a decrease in at least 3 points on the VNS at every step in which it was evaluated. The average difference between pain before and after the block was 7.5 points on the VNS. It allowed the transfer and placement of the patient without hemodynamic alteration, exacerbation of pain or other complications. Conclusions: PENG block is an effective and safe regional analgesic technique for patients with hip fracture. It allows mobilization and placement before surgery without pain exacerbation, promoting early mobility and rehabilitation.(AU)

[Translated article] Benefits of analgesic blocks, PENG block (PEricapsular Nerve Group), in fast recovery after hip surgery / Beneficios de los bloqueos analgésicos, PENG (PEricapsular Nerve Group), en la recuperación precoz tras la cirugía de cadera

Introduction: Hip fracture is a frequent orthopedic emergency which associates high morbidity and mortality and intense pain. Locoregional analgo-anesthetic techniques, both central and peripheral, occupy a preferential place in the multimodal therapeutic arsenal. Recently, a new regional blockade has emerged, the pericapsular block or PENG block (PEricapsular Nerve Group). The objective is to evaluate in patients with hip fracture, the antinociceptive efficacy of the preoperative PENG block, residual motor block and time for postoperative functional recovery. Method and materials: Prospective descriptive observational study with patients going to have total hip arthroplasty. PENG block was performed before surgery. Pain was assessed with the Visual Numerical Scale (VNS) before the blockade, 30min later, in the immediate postoperative period and 24h after the intervention. Motor block according to the Bromage scale and time needed for assisted walking were also evaluated. Results: PENG block provided effective analgesia in all patients, with a decrease in at least 3 points on the VNS at every step in which it was evaluated. The average difference between pain before and after the block was 7.5 points on the VNS. It allowed the transfer and placement of the patient without hemodynamic alteration, exacerbation of pain or other complications. Conclusions: PENG block is an effective and safe regional analgesic technique for patients with hip fracture. It allows mobilization and placement before surgery without pain exacerbation, promoting early mobility and rehabilitation.(AU)

Introducción: La fractura de cadera es una emergencia ortopédica frecuente que asocia elevada morbimortalidad y dolor intenso. Las técnicas analgo-anestésicas locorregionales, tanto centrales como periféricas, ocupan un lugar preferente dentro del arsenal terapéutico multimodal. A los bloqueos clásicos se ha sumado recientemente el bloqueo pericapsular, o PENG (PEricapsular Nerve Group). El objetivo es evaluar en pacientes con fractura de cadera la eficacia antinociceptiva del bloqueo PENG preoperatorio, el bloqueo motor residual y el tiempo necesario para la recuperación funcional postoperatoria. Material y métodos: Estudio observacional descriptivo prospectivo en pacientes programados para artroplastia total de cadera. El bloqueo PENG se realizó previo a la cirugía. Se evaluó el dolor con escala visual numérica (EVN) antes de la realización del bloqueo, 30minutos después, en el postoperatorio inmediato y a las 24horas de la intervención, el grado de bloqueo motor según la escala de Bromage y el tiempo necesario para la deambulación asistida. Resultados: En todos los pacientes el bloqueo PENG proporcionó analgesia eficaz. Logró disminuir 3 o más puntos la EVN en todos los momentos evaluados. La diferencia media entre el dolor previo y posterior al bloqueo fue de 7,5 puntos en la EVN, lo que permitió el traslado y la colocación del paciente sin alteración hemodinámica, exacerbación del dolor, ni otras complicaciones. Conclusiones: El bloqueo PENG es una técnica analgésica regional efectiva y segura para pacientes con fractura de cadera; facilita la movilización y la colocación previa a la cirugía sin exacerbación del dolor, y favorece una temprana movilidad y rehabilitación.

Benefits of analgesic blocks, PENG block (PEricapsular Nerve Group), in fast recovery after hip surgery. / Beneficios de los bloqueos analgésicos, PENG (PEricapsular Nerve Group), en la recuperación precoz tras la cirugía de cadera.

INTRODUCTION: Hip fracture is a frequent orthopedic emergency which associates high morbidity and mortality and intense pain. Locoregional analgo-anesthetic techniques, both central and peripheral, occupy a preferential place in the multimodal therapeutic arsenal. Recently, a new regional blockade has emerged, the pericapsular block or PENG block (PEricapsular Nerve Group). The objective is to evaluate in patients with hip fracture, the antinociceptive efficacy of the preoperative PENG block, residual motor block and time for postoperative functional recovery. METHOD AND MATERIALS: Prospective descriptive observational study with patients going to have total hip arthroplasty. PENG block was performed before surgery. Pain was assessed with the Visual Numerical Scale (VNS) before the blockade, 30min later, in the immediate postoperative period and 24h after the intervention. Motor block according to the Bromage scale and time needed for assisted walking were also evaluated. RESULTS: PENG block provided effective analgesia in all patients, with a decrease in at least 3 points on the VNS at every step in which it was evaluated. The average difference between pain before and after the block was 7.5 points on the VNS. It allowed the transfer and placement of the patient without hemodynamic alteration, exacerbation of pain or other complications. CONCLUSIONS: PENG block is an effective and safe regional analgesic technique for patients with hip fracture. It allows mobilization and placement before surgery without pain exacerbation, promoting early mobility and rehabilitation.

[Translated article] Benefits of analgesic blocks, PENG block (PEricapsular Nerve Group), in fast recovery after hip surgery.

INTRODUCTION: Hip fracture is a frequent orthopaedic emergency which associates high morbidity and mortality and intense pain. Locoregional analgo-anaesthetic techniques, both central and peripheral, occupy a preferential place in the multimodal therapeutic arsenal. Recently, a new regional blockade has emerged, the pericapsular block or PENG block (PEricapsular Nerve Group). The objective is to evaluate in patients with hip fracture, the antinociceptive efficacy of the preoperative PENG block, residual motor block and time for postoperative functional recovery. METHOD AND MATERIALS: Prospective descriptive observational study with patients going to have total hip arthroplasty. PENG block was performed before surgery. Pain was assessed with the Visual Numerical Scale (VNS) before the blockade, 30min later, in the immediate postoperative period and 24h after the intervention. Motor block according to the Bromage scale and time needed for assisted walking were also evaluated. RESULTS: PENG block provided effective analgesia in all patients, with a decrease in at least 3 points on the VNS at every step in which it was evaluated. The average difference between pain before and after the block was 7.5 points on the VNS. It allowed the transfer and placement of the patient without haemodynamic alteration, exacerbation of pain or other complications. CONCLUSIONS: PENG block is an effective and safe regional analgesic technique for patients with hip fracture. It allows mobilisation and placement before surgery without pain exacerbation, promoting early mobility and rehabilitation.

Partially coherent spherical sources with spherical harmonic modes.

A class of partially coherent spherical sources is introduced whose cross-spectral density across the surface has a modal expansion made up of spherical harmonics. For such sources, the solution of the propagation problem in all the outer spaces can be written through a series of the propagated modes, which maintains the spherical harmonic structure. The main features of this class of cross-spectral densities are derived illustrating their coherence properties with examples. Attention is paid to the properties of radial coherence. In particular, it is clearly shown that sources with perfect radial coherence exist with angular coherence that is only partial.

Cylindrical partially coherent scalar sources.

Partially coherent scalar sources with cylindrical symmetry radiating outwards are introduced. Homogeneous cross-spectral densities are shown to possess angularly modulated Hankel modes, whose amplitudes are subject to a filtering process during propagation. Simple criteria for treating such sources are given. For the case of an incoherent cylinder, the number of effective modes is found and spatial coherence is shown to appear in the radiated light. The radial coherence of the radiated field is then examined. Non-homogeneous cylindrical sources are also introduced.

On-axis polarization of beams radiated by electromagnetic circularly coherent sources.

On-axis spectral density and degree of polarization of beams radiated by electromagnetic (EM) sources with circular correlations are shown to be finely controlled by changing the source parameters. We reveal, in particular, that in this beam class, unlike for all previously known stationary beams, it is possible to control independently the dynamics of the on-axis spectral density and the degree of polarization. This was enabled by the obtained analytical expression for the on-axis polarization matrix, derived for general EM sources with circular coherence and Gaussian spectral density across the source plane. A simple experimental scheme for generating a broad class of EM circularly coherent sources is devised involving only a line source, a lens, and a transparency, possibly anisotropic.

Tailoring on-axis spectral density with circularly coherent light beams.

The on-axis cross-spectral density (CSD) of a beam radiated by a stationary source with a circular coherence state and a Gaussian spectral density is obtained in the closed form. It is revealed that the on-axis CSD is expressed via the Laplace transform of the source's degree of coherence or the Hilbert transform of the corresponding pseudo-mode weighting function. Such relations enable efficient tailoring of the on-axis spectral density, as we show with a slew of numerical examples.

Anaesthetic management of a dopamine-secreting phaeochromocytoma.

Pheochromocytomas are rare neuroendocrine tumors that arise from chromaffin cells of the adrenal medulla. Most adrenal pheochromocytomas secrete norepinephrine and epinephrine. Dopamine secreting pheochromocytomas are extremely rare and differs from classic pheochromocytomas in clinical features, posing a significant diagnostic challenge. A 41-year-old women presented to our emergency department because of acute flank colic pain and normotension. The screening abdominal computed tomography scan revealed a left adrenal mass. The laboratory test showed significantly increase in plasma dopamine and 24-h urine dopamine. During surgical removal the patient remained hypotensive requiring doses of norepinephrine. The patient presented significant hypertensive responde during direct laryngoscopy and intubation.

On z-coherence of beams radiated by Schell-model sources with Gaussian profile.

The degree of coherence and the intensity distribution on the axis of the beam radiated by a planar partially coherent source of the Schell-model type are investigated. We present an expression for the on-axis cross-spectral density which is valid for a very general Schell-model source, with the only constraint that the intensity distribution across the source is Gaussian. Furthermore, we show that such an expression takes very simple analytical forms for several commonly used degrees of coherence of the source.