Complicaciones y grado de dificultad de la intubación orotraqueal en la unidad de cuidados intensivos pre-post instauración de un protocolo de intubación para el paciente crítico. Estudio prospectivo y observacional / Complications and degree of difficulty of orotracheal intubation in the intensive care unit before and after the establishment of an intubation protocol for critically ill patients: A prospective, observational study

Objetivo: El objetivo de nuestro estudio fue comparar el grado de dificultad y las complicaciones relacionadas con la intubación orotraqueal en una unidad de cuidados intensivos (UCI), pre y post instauración de un protocolo de intubación basado en la guía de práctica clínica para el manejo de la vía aérea difícil específica para el paciente crítico, publicada en 2018 por la Difficult Airway Society (Reino Unido). Métodos: Estudio prospectivo, observacional, comparando todas las intubaciones realizadas en nuestra UCI en un periodo pre-protocolo (enero 2015-enero 2019) con un periodo post-protocolo (febrero 2019-julio 2022). Durante el procedimiento se registró el material utilizado para la intubación, el grado de dificultad de la intubación y las complicaciones asociadas. Resultados: Durante el periodo de estudio fueron intubados 661 pacientes: 437 en el periodo pre-protocolo (laringoscopia directa 96%) y 224 en el post-protocolo (laringoscopia directa 53%, videolaringoscopio 46%). En el periodo post-protocolo observamos una mejoría de la visión laringoscópica en comparación con el pre-protocolo (Cormack-Lehane ≥2b en el 7,6% vs 29,8%, p<0,001), y una disminución de las intubaciones calificadas de dificultad moderada-severa (6,7% vs 17,4%, p<0,001). La intubación al primer intento fue del 92,8% en el periodo post-protocolo frente al 90,2% pre-protocolo (p=0,508). No encontramos diferencias significativas en las complicaciones en los dos periodos estudiados. Conclusiones: Las intubaciones realizadas en el periodo post-protocolo se han asociado a una mejoría de la visión laringoscópica y a una menor dificultad de intubación en comparación con el periodo pre-protocolo.(AU)

Objective: The objective of our study was to compare the degree of difficulty and complications related to tracheal intubation in an intensive care unit (ICU) before and after the introduction of an intubation protocol based on the Difficult Airway Society guidelines for the management of tracheal intubation in critically ill adults, published in 2018. Methods: Prospective, observational study comparing all intubations performed in our ICU over two periods: pre-protocol (January 2015-January 2019) and post-protocol (February 2019-July 2022). The material used for intubation, the degree of difficulty, and intubation-related complications were recorded. Results: During the study period, 661 patients were intubated —437 in the pre-protocol period (96% by direct laryngoscopy) and 224 in the post-protocol period (53% with direct laryngoscopy, 46% with video laryngoscopy). We observed an improvement in laryngeal view in the post-protocol period compared to the pre-protocol period (Cormack-Lehane ≥2b in 7.6% vs 29.8%, P<.001), and a decrease in the number of moderate-to-severely difficult intubations (6.7% vs 17.4%, P<.001). The first-pass success rate was 92.8% in the post-protocol period compared to 90.2% pre-protocol (P=.508). We did not find significant differences in complications between the periods studied. Conclusions: Intubations performed in the post-protocol period were associated with improved laryngeal view and fewer cases of difficult intubation compared with the pre-protocol period.(AU)

Complications and degree of difficulty of orotracheal intubation in the Intensive Care Unit before and after the establishment of an intubation protocol for critically ill patients: a prospective, observational study.

OBJECTIVE: The objective of our study was to compare the degree of difficulty and complications related to tracheal intubation in an Intensive Care Unit (ICU) before and after the introduction of an intubation protocol based on the Difficult Airway Society guidelines for the management of tracheal intubation in critically ill adults, published in 2018. METHODS: Prospective, observational study comparing all intubations performed in our ICU over 2 periods: pre-protocol (January 2015-January 2019) and post-protocol (February 2019-July 2022). The material used for intubation, the degree of difficulty, and intubation-related complications were recorded. RESULTS: During the study period, 661 patients were intubated - 437 in the pre-protocol period (96% by direct laryngoscopy) and 224 in the post-protocol period (53% with direct laryngoscopy, 46% with video laryngoscopy). We observed an improvement in laryngeal view in the post-protocol period compared to the pre-protocol period (Cormack-Lehane ≥ 2b in 7.6% vs. 29.8%, p < 0.001), and a decrease in the number of moderate-to-severely difficult intubations (6.7% vs. 17.4%, p < 0.001). The first-pass success rate was 92.8% in the post-protocol period compared to 90.2% pre-protocol (p = 0.508). We did not find significant differences in complications between the periods studied. CONCLUSIONS: Intubations performed in the post-protocol period were associated with improved laryngeal view and fewer cases of difficult intubation compared with the pre-protocol period.

Vaginal microbiome in early pregnancy and subsequent risk of spontaneous preterm birth: a case-control study.

OBJECTIVES: To explore differences in the vaginal microbiome between preterm and term deliveries. DESIGN: Nested case-control study in 3D cohort (design, develop, discover). SETTING: Quebec, Canada. SAMPLE: Ninety-four women with spontaneous preterm birth as cases [17 early (<34 weeks) and 77 late (34-36 weeks) preterm birth] and 356 women as controls with term delivery (≥37 weeks). METHODS: To assess the vaginal microbiome by sequencing the V4 region of the 16S ribosomal RNA (rRNA) gene in swabs self-collected during early pregnancy. MAIN OUTCOME MEASURES: Comparison of relative abundance of bacterial operational taxonomic units and oligotypes and identifying vaginal community state types (CSTs) in early or late spontaneous preterm and term deliveries. RESULTS: Lactobacillus gasseri/ Lactobacillus johnsonii (coefficient -5.36, 95% CI -8.07 to -2.65), Lactobacillus crispatus (99%)/ Lactobacillus acidophilus (99%) (-4.58, 95% CI -6.20 to -2.96), Lactobacillus iners (99%)/ Ralstonia solanacearum (99%) (-3.98, 95% CI -6.48 to -1.47) and Bifidobacterium longum/ Bifidobacterium breve (-8.84, 95% CI -12.96 to -4.73) were associated with decreased risk of early but not late preterm birth. Six vaginal CSTs were identified: four dominated by Lactobacillus; one with presence of bacterial vaginosis-associated bacteria (Gardnerella vaginalis, Atopobium vaginae and Veillonellaceae bacterium) (CST IV); and one with nondominance of Lactobacillus (CST VI). CST IV was associated with increased risk of early (4.22, 95% CI 1.24-24.85) but not late (1.63, 95% CI 0.68-5.04) preterm birth, compared with CST VI. CONCLUSIONS: Lactobacillus gasseri/L. johnsonii, L. crispatus/L. acidophilus, L. iners/R. solanacearum and B. longum/B. breve may be associated with decreased risk of early preterm birth. A bacterial vaginosis-related vaginal CST versus a CST nondominated by Lactobacillus may be associated with increased risk of early preterm birth. TWEETABLE ABSTRACT: Largest study of its kind finds certain species of vaginal Lactobacillus + Bifidobacterium may relate to lower risk of preterm birth.

El legado científico y el papel actual de la atorvastatina en el manejo del riesgo de enfermedad cardiovascular aterosclerótica / The scientific legacy and the current role of atorvastatin in the management of risk of atherosclerotic cardiovascular disease

Resumen Durante mucho tiempo, los esfuerzos para disminuir el riesgo cardiovascular en los adultos se centraron en el intento de reducir tanto como fuese posible las concentraciones plasmáticas de colesterol 6, LDL (c-LDL). Hasta muy recientemente se concluyó que en los estudios clínicos de medicamentos con acción en los lípidos circulantes no existía evidencia directa que permitiera determinar cuál es la mejor meta de c-LDL para la disminución del riesgo cardiovascular y tampoco se concedió importancia suficiente a los eventos adversos de las diferentes combinaciones farmacológicas recomendadas para el logro de las concentraciones de c-LDL más bajas posibles. El análisis exhaustivo realizado para la actualización del Programa para el Control del Colesterol en el Adulto de Estados Unidos (NCEP-ATP-III), que comprendió una gran cantidad de estudios controlados con distribución al azar, permitió en 2013 la postulación de un nuevo paradigma de tratamiento que abandona el concepto de metas determinadas de c-LDL y que insiste en la importancia de las modificaciones favorables en el estilo de vida, además de que recomienda la administración preferencial de estatinas, en tipos y dosis fijas, debido a que un importante volumen de evidencia ha demostrado que estos agentes atenúan la progresión de la aterosclerosis coronaria y promueven la regresión de ésta, con lo que disminuyen significativamente la morbilidad y mortalidad cardiovasculares en la prevención primaria y en la secundaria. En este nuevo paradigma terapéutico fue posible también la identificación de los grupos de pacientes que pueden beneficiarse con la administración de estatinas. En consensos y guías más recientes, algunas asociaciones sostienen la necesidad de lograr ciertas metas de cLDL de acuerdo con el riesgo, pero mantienen a las estatinas como el pilar del tratamiento, solas o en combinación con ezetimiba o con antagonistas de la convertasa de proproteínas subtilisina/kexina de tipo 9 (PCSK9: proprotein convertase subtilisin/kexin type 9). En este artículo se revisa la evidencia clínica relativa a la administración de atorvastatina, que en gran medida permitió el desarrollo del nuevo paradigma de manejo del riesgo cardiovascular.

Abstract For a long time, efforts to reduce cardiovascular risk in adults focused on the attempt to reduce plasmatic LDL cholesterol (LDLc) levels as much as possible. Until very recently, it was concluded that in clinical studies of drugs with action on circulating lipids, there was no direct evidence to determine the best LDLc target for cardiovascular risk reduction, and that adverse events, or the almost absent demonstration of impact on hard outcomes of the different pharmacological combinations recommended for the achievement of the lowest possible LDLc concentrations, were not considered. The comprehensive analysis for the update of NCEP-ATP-III (National Cholesterol Education Program, Adult Treatment Panel III), which included a large number of controlled and randomized trials, allowed in 2013 the postulation of a new treatment paradigm, which leaves the concept of specific goals of LDLc and postulates the importance of favorable lifestyle modifications and which commends the pre-ferential use of statins, fixed doses and type, because a large volume of evidence has shown that these agents attenuate the progression of coronary atherosclerosis and promote the regression of this, which significantly decrease cardiovascular morbidity and mortality in both primary and secondary prevention. In this new therapeutic paradigm, it was also possible to identify the groups of patients that can benefit from the use of statins. In more recent consensuses and guidelines, some associations support the need to achieve risk-adjusted LDLc, but keep statins as the mainstay of treatment, alone or in combination with ezetimibe or proprotein convertase subtilisin/kexin type 9 (PCKS-9) antagonists. This article reviews the clinical evidence regarding the use of atorvastatin, which allowed the development of the new cardiovascular risk management paradigm.

Papel de la espironolactona en el tratamiento de la hipertensión arterial resistente / Role of spironolactone in the treatment of resistant hypertension

Resumen Este artículo aporta herramientas útiles para el diagnóstico y el diagnóstico diferencial de la hipertensión arterial resistente. En él, se refieren las recomendaciones de las principales guías internacionales de tratamiento respecto de las cifras meta de presión arterial, la incapacidad o falla del tratamiento triple en un amplio porcentaje de pacientes y los factores para la elección racional del cuarto agente para la institución de un tratamiento cuádruple. Esta elección se basa en la capacidad de la espironolactona -antagonista de los receptores de aldosterona- para inhibir los efectos nocivos de la aldosterona que dificultan el control de la presión arterial e incrementan el riesgo cardiovascular en un alto porcentaje de pacientes.

Abstract This article provides useful tools for the diagnosis and differential diagnosis of resistant hypertension. Here, we refer the recommendations of the main international guidelines of management respect to the target goals of the blood pressure, the failure of triple therapy in a large percentage of patients and the factors for the rational choice of the fourth agent for the institution of a quadruple therapy. This choice is based on the ability of spironolactone, antagonist of aldosterone receptors, to inhibit the deleterious effects of aldosterone that difficult the control of blood pressure and increase the cardiovascular risk in a high percentage of patients.

α7 nicotinic acetylcholine receptor signaling modulates the inflammatory phenotype of fetal brain microglia: first evidence of interference by iron homeostasis.

Neuroinflammation in utero may result in life-long neurological disabilities. Microglia play a pivotal role, but the mechanisms are poorly understood. No early postnatal treatment strategies exist to enhance neuroprotective potential of microglia. We hypothesized that agonism on α7 nicotinic acetylcholine receptor (α7nAChR) in fetal microglia will augment their neuroprotective transcriptome profile, while the antagonistic stimulation of α7nAChR will achieve the opposite. Using an in vivo - in vitro model of developmental programming of neuroinflammation induced by lipopolysaccharide (LPS), we validated this hypothesis in primary fetal sheep microglia cultures re-exposed to LPS in presence of a selective α7nAChR agonist or antagonist. Our RNAseq and protein level findings show that a pro-inflammatory microglial phenotype acquired in vitro by LPS stimulation is reversed with α7nAChR agonistic stimulation. Conversely, antagonistic α7nAChR stimulation potentiates the pro-inflammatory microglial phenotype. Surprisingly, under conditions of LPS double-hit an interference of a postulated α7nAChR - ferroportin signaling pathway may impede this mechanism. These results suggest a therapeutic potential of α7nAChR agonists in early re-programming of microglia in neonates exposed to in utero inflammation via an endogenous cerebral cholinergic anti-inflammatory pathway. Future studies will assess the role of interactions between inflammation-triggered microglial iron sequestering and α7nAChR signaling in neurodevelopment.

Gene-body 5-hydroxymethylation is associated with gene expression changes in the prefrontal cortex of depressed individuals.

5-Hydroxymethylcytosine (5hmC) is a recently characterized epigenetic mark that is particularly abundant in brain tissue and that regulates gene transcription. We have recently begun to understand the important role of 5hmC in brain development, plasticity and disease, but there are currently little data on 5hmC alterations in psychiatric illnesses. Here we report what we believe to be the first genome-wide analysis of 5hmC in the depressed brain. Using AbaSI sequencing, we investigated 5hmC in the prefrontal cortex of depressed (N=19) and psychiatrically healthy controls (N=19). Consistent with previous global 5hmC analyses in other phenotypes, and likely owing to the inter-individual variability in 5hmC content, the distribution of 5hmC across chromosomes and genomic features was not different between groups. We did, however, find 550 CpGs with suggestive evidence of differential hydroxymethylation. Of these, we validated CpGs in the gene body of myosin XVI (MYO16) and insulin-degrading enzyme using targeted oxidative bisulfite sequencing. Furthermore, the enrichment of 5hmC was also associated with changes in the expression of these two genes in depressed suicides. Together, our results present a novel mechanism linking increased 5hmC to depression and provide a framework for future research in this field.

RNAseq profiling of primary microglia and astrocyte cultures in near-term ovine fetus: A glial in vivo-in vitro multi-hit paradigm in large mammalian brain.

BACKGROUND: The chronically instrumented fetal sheep is a widely used animal model to study fetal brain development in health and disease, but no methods exist yet to interrogate dedicated brain cell populations to identify their molecular and genomic phenotype. For example, the molecular mechanisms whereby microglia or astrocytes contribute to inflammation in the brain remain incompletely understood. NEW METHOD: Here we present a protocol to derive primary pure microglial or astrocyte cultures from near-term fetal sheep brain, after the animals have been chronically instrumented and studied in vivo. Next, we present the implementation of whole transcriptome sequencing (RNAseq) pipeline to deeper elucidate the phenotype of such primary sheep brain glial cultures. RESULTS: We validate the new primary cultures method for cell purity and test the function of the glial cells on protein (IL-1ß) and transcriptome (RNAseq) levels in response to a lipopolysaccharide (LPS) challenge in vitro. COMPARISON WITH EXISTING METHODS: This method represents the first implementation of pure microglial or astrocytes cultures in fetal sheep brain. CONCLUSIONS: The presented approach opens new possibilities for testing not only supernatant protein levels in response to an in vitro challenge, but also to evaluate changes in the transcriptome of glial cells derived from a large mammalian brain bearing high resemblance to the human brain. Moreover, the presented approach lends itself to modeling the complex multi-hit paradigms of antenatal and perinatal cerebral insults in vivo and in vitro.

Bloqueo de la fascia transversalis versus bloqueo plano transverso del abdomen anterior ecoguiados en cirugía ambulatoria de hernia inguinal / Ultrasound-guided transversalis fascia plane block versus anterior transversus abdominis plane block in outpatient inguinal hernia repair

Introducción. El objetivo del estudio fue valorar la eficacia del bloqueo de la fascia transversalis (TFP) guiado por ultrasonografía en comparación con el bloqueo del plano transverso del abdomen (TAP anterior) para analgesia postoperatoria en pacientes programados para cirugía ambulatoria unilateral de hernia inguinal. Material y métodos. Estudio observacional de naturaleza retrospectiva en pacientes ASA I-II. Se establecieron 2 grupos (TAP-A y TFP), a los que se les administró 30ml de levobupivacaína 0,25% previamente a la incisión quirúrgica. La variable principal evaluada fue el dolor postoperatorio mediante la escala verbal numérica (EVN), en reposo y movimiento, a los 10, 30, 60, 90 min coincidiendo con la deambulación y a las 24 h mediante llamada telefónica. También se evaluó el nivel sensitivo de bloqueo alcanzado previamente a la cirugía, las necesidades de analgesia adicional requeridas, los efectos secundarios, la facilidad de realización de la técnica y el grado de satisfación de los pacientes con la técnica anestésica-analgésica. Resultados. Se incluyó a 61 pacientes: 30 pacientes en el grupo TAP-A y 31 en el grupo TFP. La eficacia analgésica obtenida en ambos grupos fue similar, aunque encontramos unos valores más altos de EVN en movimiento en el grupo TAP-A, que alcanzó la diferencia estadística a los 10 min (p=0,014) y 30 min (p=0,013) del postoperatorio. En el grupo TFP se alcanzó un nivel de bloqueo sensitivo más alto que en el grupo TAP-A (p<0,01). No hubo diferencias significativas en los requerimientos de analgesia adicional; la dosis acumulada de cloruro mórfico fue similar en ambos grupos en el periodo postoperatorio. Tampoco hubo diferencias en efectos secundarios ni en complicaciones. La facilidad técnica de realización del bloqueo fue similar en ambos grupos y el grado de satisfación de los pacientes, muy elevado. Conclusiones. Ambos bloqueos dentro de una estrategia multimodal proporcionan buena analgesia postoperatoria para cirugía de hernia inguinal, son fáciles de realizar y presentan escasas complicaciones. El TFP alcanza un nivel sensitivo más alto, pero no existen diferencias en los requerimientos de analgesia adicional (AU)

Introduction. The aim of the study was to assess the effectiveness of ultrasound-guided transversalis fascia plane block (TFP) compared to anterior transversus abdominis plane block (TAP-A) for post-operative analgesia in outpatient unilateral inguinal hernia repair. Materials and methods. Retrospective observational study conducted on ASA I-II patients. Two groups (TAP-A and TFP), which were given 30ml of 0.25% levobupivacaine prior to surgical incision. The primary endpoint was the post-operative pain evaluated by verbal numerical scale (VRN at rest and movement) at 10, 30, 60, 90min, coinciding with ambulation, and 24hours by telephone. An evaluation was also made of the sensory block level reached prior to surgery, the need for additional analgesia, side effects, ease of performing the technique, and the level of satisfaction of patients with the anaesthetic-analgesic technique. Results. A total of 61 patients were included, 30 patients in the TAP-A group and 31 in the TFP group. The analgesic efficacy obtained in both groups was similar, although some higher values were found in the VNR on moving in the TAP-A group, reaching statistical difference at 10minutes (P=.014) and 30minutes (P=.013) post-operatively. A higher level of sensory block was achieved in the TFP group than in the TAP-A group (P<.01). There were no significant differences in additional analgesia requirements, and the cumulative dose of morphine was similar in both groups in the post-operative period. There were no differences in side effects or complications. The technical ease of the block was similar in both groups and the level of satisfaction of patients very high. Conclusions. Both blocks with a multimodal approach achieve good post-operative analgesia of inguinal hernia repair, are easy to perform and have few complications. TFP achieves the highest sensory level, but there are no differences in the requirements for additional analgesia (AU)

Ultrasound-guided transversalis fascia plane block versus anterior transversus abdominis plane block in outpatient inguinal hernia repair. / Bloqueo de la fascia transversalis versus bloqueo plano transverso del abdomen anterior ecoguiados en cirugía ambulatoria de hernia inguinal.

INTRODUCTION: The aim of the study was to assess the effectiveness of ultrasound-guided transversalis fascia plane block (TFP) compared to anterior transversus abdominis plane block (TAP-A) for post-operative analgesia in outpatient unilateral inguinal hernia repair. MATERIALS AND METHODS: Retrospective observational study conducted on ASA I-II patients. Two groups (TAP-A and TFP), which were given 30ml of 0.25% levobupivacaine prior to surgical incision. The primary endpoint was the post-operative pain evaluated by verbal numerical scale (VRN at rest and movement) at 10, 30, 60, 90min, coinciding with ambulation, and 24hours by telephone. An evaluation was also made of the sensory block level reached prior to surgery, the need for additional analgesia, side effects, ease of performing the technique, and the level of satisfaction of patients with the anaesthetic-analgesic technique. RESULTS: A total of 61 patients were included, 30 patients in the TAP-A group and 31 in the TFP group. The analgesic efficacy obtained in both groups was similar, although some higher values were found in the VNR on moving in the TAP-A group, reaching statistical difference at 10minutes (P=.014) and 30minutes (P=.013) post-operatively. A higher level of sensory block was achieved in the TFP group than in the TAP-A group (P<.01). There were no significant differences in additional analgesia requirements, and the cumulative dose of morphine was similar in both groups in the post-operative period. There were no differences in side effects or complications. The technical ease of the block was similar in both groups and the level of satisfaction of patients very high. CONCLUSIONS: Both blocks with a multimodal approach achieve good post-operative analgesia of inguinal hernia repair, are easy to perform and have few complications. TFP achieves the highest sensory level, but there are no differences in the requirements for additional analgesia.

Study of metal transport through pine bark for reutilization as a biosorbent.

The potential utilization of pine bark as a biosorbent for the treatment of metal-contaminated soils and waters has been evaluated in transport experiments using laboratory columns. Solutions containing the metals Cu, Pb, Zn, Ni or Cd, each one individually and at three different concentrations (2.5, 10 and 25 mM) were tested. Pine bark affected metal transport and the breakthrough curves, producing a reduction of their concentrations in the solution and a clear retardation with respect to an inert tracer. At metal concentrations equal to 2.5 mM, 100% of the assayed elements were removed from the solution in the pine bark column. At the 10 mM metal concentration, the percentage of metals retained fell to 38-67% of the amount added, whereas at the 25 mM metal concentration, only 16-43% was retained. In all cases, the highest retention capacity corresponded to Pb, and the lowest to Zn, whereas Cu, Cd and Ni produced intermediate comparable results. The analysis of the pine bark within the columns after the transport experiment showed that the metals entering the column adsorb progressively until a saturation concentration is reached in the whole column, and only then they can be released at significant concentrations. This saturation concentration was approximately 70 mmol kg(-1) for Cd, Ni and Zn, 100 mmol kg(-1) for Cu, and 125 mmol kg(-1) for Pb. Overall, our experiments have shown the high effectiveness of pine bark to retain the assayed metals in stable forms of low mobility.

Utilidad del bloqueo canal aductor ecoguiado en cirugía ambulatoria de artroscopia de rodilla / Usefulness of ultrasound-guided adductor canal block in outpatient arthroscopic knee surgery

Introducción: Se han descrito numerosas modalidades analgésicas para el control del dolor postoperatorio en cirugía de rodilla, sin embargo no se ha encontrado la técnica analgésica ideal que proporcione una analgesia adecuada, preservando la función muscular y que permita una rápida recuperación funcional con escasos efectos secundarios. El bloqueo del nervio safeno a nivel del canal aductor ha mostrado su utilidad para reducir el dolor y los requerimientos analgésicos en cirugía de rodilla. El objetivo de nuestro estudio fue valorar la eficacia y seguridad del bloqueo canal aductor ecoguiado en pacientes programados para cirugía de artroscopia de rodilla en régimen ambulatorio. Material y métodos: Estudio prospectivo, aleatorizado, simple ciego, en pacientes ASA I y II, divididos en dos grupos: grupo ACB a los que se les realizó un bloqueo del canal aductor ecoguiado con 20 ml levobupivacaína 0,5 %, previo a la cirugía; grupo ID a los que se les realizó una anestesia intradural con bupivacaína hiperbara 0,5 %. Se evaluó la eficacia analgésica mediante la escala verbal numérica (en reposo y movimiento) a su llegada a URPA, a la 1ª, 2ª horas del postoperatorio, al alta de la unidad coincidiendo con el inicio de la deambulación y en domicilio a las 24 horas mediante llamada telefónica, se registró la analgesia de rescate administrada, los efectos secundarios, el bloqueo sensitivo, el grado de bloqueo motor y el grado de satisfacción de los pacientes con la técnica anestésica. Resultados: Se incluyeron 20 pacientes, 10 en el grupo ID. La eficacia analgésica obtenida en ambos grupos fue similar, encontrándose diferencias significativas en los valores de EVN en movimiento a la llegada a la URPA y a las 24 horas en domicilio. El grupo ACB presentó valores de EVN en movimiento más altos a su llegada a la URPA, sin embargo el grupo ID presentó valores más altos a las 24 horas en el domicilio. Los requerimientos de analgesia adicional fueron ligeramente superiores en el grupo ID a partir de la 1ª hora del postoperatorio, llegando a ser estadísticamente significativo a la 2ª hora del postoperatorio. Mediante llamada telefónica a domicilio, a las 24 horas se encontró un mayor consumo de analgesia de rescate en este grupo (p < 0,05). No hubo diferencias en los efectos secundarios ni complicaciones relacionadas con la técnica regional ecoguiada. El grado de satisfacción de los pacientes con respecto a la técnica anestésica fue similar para ambos grupos.Conclusiones: El bloqueo del canal aductor es un bloqueo principalmente sensitivo, que puede ser de utilidad como adyuvante analgésico para el dolor postoperatorio de la cirugía ambulatoria de artroscopia de rodilla. Es una técnica novedosa, sencilla de realizar, con escasas complicaciones descritas y serán necesarios más estudios para investigar cuál es la concentración óptima y volumen de anestésico local necesario para realizar el bloqueo (AU)

Introduction: Numerous analgesic varieties have been described at the management of postoperative acute pain in knee surgery, however no regional anaesthetic techniques has so far been demonstrated to be ideal to provide sufficient analgesia with preserved muscle function and to enhance a quick functional recovery with minimal side effects. Saphenous nerve block at level on the adductor canal, it is a predominant sensory blockade, has proven useful in reducing pain and analgesic requirements in knee surgery. The aim of our study was to evaluate the efficiency and safety of ultrasound-guided adductor canal block in patients scheduled for arthroscopic Knee surgery in outpatients. Materials and Methods: A prospective, randomized, single-blind, ASA I and II patients, divided into two groups: the ACB group who underwent ultrasound-guided adductor canal block with levobupivacaine 0.5 % 20 ml prior to surgery; and a ID group who realized a spinal anesthesia with hyperbaric bupivacaine 0.5 %. Analgesic efficacy was evaluated by a numeric verbal scale (at rest and in movement) at arrived URPA, at 1ª and 2ª hour post surgery, before return home coinciding with ambulation and through a telephone call to the patients home 24 hours post surgery, recording the rescue analgesia administered, the side effects, the sensory and motor blockade and degree of patient satisfaction with the anesthetic technique. Results: 20 patients were included, 10 in the ACB group and 10 in the ID group. The analgesic efficacy obtained in both groups was similar, finding statistically significant in the values of EVN in movement at arrived URPA and at 24 hours at home. The ACB group presented higher values of EVN in movement at arrived URPA, however the ID group presented higher values at 24 hours at home. The additional analgesia requirements were higher in the ID group from 1ª hour post surgery, becoming statistically significant at 2ª hour post surgery. The telephone call to the patients home, 24 hours post surgery evidenced an increased consumption of rescue analgesia in this group (p < 0.05). There were no differences in the side effects or complications related to the regional ultrasound-guided technique. The degree of patient satisfaction regarding the anesthetic technique was similar in both groups.Conclusions: The adductor canal block is a predominant sensory blockade, it may be useful how adjuvant analgesia in reducing pain and analgesic require-ments in outpatient arthroscopic knee surgery. It is a novelty technique, a simple block to perform, with few complications, and future studies will be needed to investigate the optimal volume and concentration of local anesthetic necessary to perform the blockade (AU)

Pine bark as bio-adsorbent for Cd, Cu, Ni, Pb and Zn: batch-type and stirred flow chamber experiments.

The objective of this work was to determine the retention of five metals on pine bark using stirred flow and batch-type experiments. Resulting from batch-type kinetic experiments, adsorption was rapid, with no significant differences for the various contact times. Adsorption was between 98 and 99% for Pb(2+), 83-84% for Cu(2+), 78-84% for Cd(2+), 77-83% for Zn(2+), and 70-75% for Ni(2+), and it was faster for low concentrations, with Pb suffering the highest retention, followed by Cu, Cd, Ni and Zn. The fitting to the Freundlich and Langmuir models was satisfactory. Desorption increased in parallel to the added concentrations, with Pb always showing the lowest levels. Stirred flow chamber experiments showed strong hysteresis for Pb and Cu, sorption being mostly irreversible. The differences affecting the studied heavy metals are mainly due to different affinity for the adsorption sites. Pine bark can be used to effectively remove Pb and Cu from polluted environments.

Bloqueo transverso abdominal ecoguiado vs. infiltración de herida quirúrgica en cirugía ambulatoria de hernia inguinal / Transversus abdominis plane block ultrasound-guided vs. surgical wound infiltration in outpatient inguinal hernia repair

Introducción: recientemente se han descrito numerosos bloqueos periféricos a nivel abdominal. El bloqueo del plano transverso abdominal (TAP) ha mostrado su utilidad para reducir el dolor y los requerimientos analgésicos en cirugía de pared abdominal. El objetivo de nuestro estudio fue valorar la eficacia y seguridad del bloqueo TAP ecoguiado en comparación con la infiltración de la herida quirúrgica en pacientes programados para cirugía de hernia inguinal unilateral en régimen ambulatorio. Material y métodos: estudio prospectivo, aleatorizado, simple ciego, en pacientes ASA I y II, divididos en dos grupos: grupo TAP a los que se les realizó un bloqueo TAP ecoguiado con 30 ml levobupivacaína 0,25 %, previo a la cirugía; grupo IH con infiltración de la herida quirúrgica con levobupivacaína 0,25 %. Se evaluó la eficacia analgésica mediante la escala verbal numérica (en reposo y movimiento) a los 10, 30, 60 y 90 min del postoperatorio, coincidiendo con la deambulación y en domicilio a las 24 h mediante llamada telefónica. Se registró la analgesia de rescate administrada, los efectos secundarios y el grado de satisfacción de los pacientes con la técnica anestésica. Resultados: se incluyeron 41 pacientes, 20 en el grupo TAP y 21 en el grupo IH. La eficacia analgésica obtenida en ambos grupos fue similar, con mayor demanda de analgesia adicional en postoperatorio en el grupo IH a los 10, 30 y 60 min, llegando a ser estadísticamente significativo a los 60 min. Mediante llamada telefónica a domicilio, a las 24 h se encontró un mayor consumo deo (..) (AU)

Introduction: Recently numerous peripheral blocks have been described at abdominal wall. The transversus abdominis plane block (TAP), has proven useful in reducing pain and analgesic requirements in abdominal wall surgery. The aim of our study was to evaluate the efficiency and safety of ultrasound-guided TAP block compared to surgical wound infiltration in patients scheduled for unilateral inguinal hernia surgery in outpatients. Materials and methods: A prospective, randomized, single-blind, ASA I and II patients, divided into two groups: the TAP group who underwent ultrasound guided TAP block with 30 ml levobupivacaine 0.25% prior to surgery; and a IH group with surgical wound infiltration with levobupivacaine 0.25%. Analgesic efficacy was evaluated by a numerical verbal scale (at rest and in movement) in 10, 30, 60, 90 minutes post surgery, coinciding with ambulation and through (..) (AU)

Getting under­and through­the skin: ecological genomics of chytridiomycosis infection in frogs.

Amphibian species around the world are currently becoming endangered or lost at a rate that outstrips other vertebrates­victims of a combination of habitat loss, climate change and susceptibility to emerging infectious disease (Stuart et al. 2004). One of the most devastating such diseases is caused by the chytrid fungus Batrachochytrium dendrobatidis (Bd), which infects hundreds of amphibian species on multiple continents. While Bd itself has been characterized for some time, we still know little about the mechanisms that make it so deadly. In this issue of Molecular Ecology, Rosenblum et al. describe a genomic approach to this question, reporting the results of a genome-wide analysis of the transcriptional response to Bd in the liver, skin and spleen of mountain yellow-legged frogs (Rana mucosa and R. sierrae: Fig. 1) (Rosenblum et al. 2012). Their results indicate that the skin is not only the first, but likely the most important, line of defence in these animals. Strikingly, they describe a surprisingly modest immune response to infection in Rana, a result that may help explain variable Bd susceptibility across populations and species.

Comentarios al artículo «Cefalea postpunción dural en obstetricia» / Comments on the article "Postdural puncture headache in obstetrics"

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Transcriptional analysis of human papillomavirus type 16 in histological sections of cervical dysplasia by in situ hybridisation.

BACKGROUND: The HPV-16 virus is well described as a causative agent in cervical cancer. AIMS: To individually analyse the transcription profile of the HPV-16 viral genes in patient biopsies of varying grades of cervical dysplasia by a chromogenic in situ hybridisation technique. METHODS: 19 formalin fixed, paraffin embedded (FFPE) biopsies of cervical dysplasia were analysed by a chromogenic in situ hybridisation protocol using novel long single stranded digoxigenin labelled DNA probes targeted to the individual HPV-16 gene RNAs. RESULTS: A transcription pattern for all the HPV-16 genes that is always conserved to the upper intermediate and superficial layers of the cervical epithelium and is independent of the level of dysplasia is described. E1 and E6 transcripts were found to express with a uniquely nuclear localisation; all other transcripts had both nuclear and cytoplasmic localisation. E5 oncogene transcripts were abundant in all cases, being equal to or greater than E7. Deep investigation of the E2 RNA transcript showed a potential alternative transcript with a possible novel start codon. CONCLUSIONS: This data represents new information on HPV-16 viral transcription events that bring into question some of the current beliefs on the mechanism of HPV-16 infection in the progression to cervical cancer. Results support high expression of the E5 and E7 oncogenes in cervical dysplasias infected by HPV-16 in contrast to the low levels identified for the E6 oncogene and a possible alternative transcript for the E2 gene. The diagnostic utility of the detection of HPV-16 RNA transcripts is becoming more apparent and a renewed look at their in situ localisation in cervical biopsies could be beneficial.

Cefalea postfunción dural. Revisión de la Literatura / No disponible

La cefalea postpunción dural (CPPD) es el resultado de la punción advertida o inadvertida de la duramadre. Es la complicación más frecuente de la anestesia neuroaxial. Los mecanismos fisiopatológicos siguen siendo discutidos. La mayoría de las veces se resuelve espontáneamente pero en ocasiones persiste meses. Su tratamiento es controvertido porque la evidencia científica es escasa. El siguiente artículo revisa la incidencia, fisiopatología, clínica, diagnóstico, prevención y tratamiento de la CPPD(AU)

Postdural puncture headache (PDPH) is the result of the puncture warned or unnoticed of dura mater. It is the most common complication following neuroaxial anesthesia. Physiopathological mechanisms remain discussed. Most of the times it solves spontaneously but sometimes it persists months. Its treatment is controversial because the scientific evidence is scarce. The following article reviews the incidence, physiopathology, clinical, diagnosis, prevention and treatment of the PPH(AU)

Anestesia en cirugía coronaria: circulación extracorpórea (CEC) versus cirugía sin cec (OPCABG) / No disponible

La introducción de la circulación extracorpórea (CEC) en cirugía de revascularización coronaria supuso una auténtica revolución. La comparación de los resultados de la cirugía con y sin CEC es un tema controvertido. En los primeros estudios observacionales parecía que la realización de cirugía cardiaca sin bomba podría disminuir la mortalidad y las complicaciones a corto plazo. Lo que explica estos hallazgos es el hecho de que los pacientes asignados a la cirugía con y sin CEC no eran comparables. Posteriormente se comienzan a realizar estudios randomizados con resultados menos positivos que los obtenidos inicialmente. En un estudio mayor, el ROOBY, se dejan en entredicho los trabajos realizados hasta entonces y concluye diciendo que al comparar los resultados de la CEC con los de la cirugía coronaria sin CEC, la incidencia de complicaciones es similar a largo plazo, la incidencia de estenosis es mayor que en cirugía sin CEC, lo que conlleva un aumento de mortalidad de causa cardíaca en este grupo de pacientes. Posiblemente el beneficio de la cirugía sin CEC se observe en pacientes de alto riesgo. Habrá que esperar al resultado de nuevos estudios que se realicen en este tipo de pacientes para ver la mortalidad a medio y largo plazo(AU)

Introduction of cardiopulmonary bypass in coronary revascularization supposed a great revolution. Comparison of cardiopulmonary bypass results with off-pump surgery is a controversial subject. Observational studies concluded that off pump surgery could reduce short-term mortality and complications. It is explained because patients from both groups were not comparable. Later they began to make randomized trials that showed worse results than they thought initially. A bigger study, the ROOBY, compromised the previous ones. ROOBY´s conclusions showed that comparing cardiopulmonary bypass results with off-pump outcomes, the incidence of long-term complications was similar and graft patency was worse for off-pump surgery. Then, cardiovascular mortality was increased in these patients. Presumably, off-pump coronary artery bypass grafting´s might be beneficial for high risk patients. We will have to wait new studies made in these patients, to achieve medium and long term mortality data(AU)