Vigilancia epidemiológica de infecciones asociadas a la asistencia sanitaria

Introduction: epidemiological surveillance is useful for identifying the risk of acquiring in hospitals a healthcare-associated infection and other related risk factors. Objective: show the results of epidemiological surveillance of infections in Abel Santamaría Cuadrado General Hospital of Pinar del Río Province. Material and method: An observational, descriptive, prospective study. The study group was composed of the 25 786 patients discharged in 2012 and the sample, by the 578 patients who acquired an infection associated to healthcare. The following variables were used: service of origin, location of infection, isolated organism and death. The information was obtained by reviewing medical, microbiology and pathological anatomy records and death certificates. Results: a generalized infection rate of 2.2 per 100 discharges from service was obtained. 47.5% of patients with infections had a respiratory condition. Enterobacteria were germs isolated the most, predominantly including E. coli and Enterobacter. The risk of dying from healthcare-associated infections was 4 per 1000 hospital discharges with a fatality rate of 20.1%. Conclusions: epidemiological surveillance was effective for identifying healthcare-associated infections with an adequate rate of hospital incidence, being more frequent respiratory infections, especially Enterobacteriaceae, with mortality and lethality suitable for this type of hospital.Introducción: la vigilancia epidemiológica es una herramienta útil para identificar el riesgo de adquirir una infección asociada a la asistencia sanitaria en los hospitales y los factores de riesgo relacionados. Objetivo: demostrar los resultados de la vigilancia epidemiológica de infecciones en el Hospital General Abel Santamaría Cuadrado de la provincia Pinar del Río. Material y método: se realizó un estudio observacional, descriptivo, prospectivo. El universo de estudio quedó constituido por los 25786 pacientes egresados en el año 2012 y la muestra por los 578 pacientes que adquirieron una infección asociada a la asistencia sanitaria. Se utilizaron las variables: servicio de procedencia, localización de la infección, microorganismo aislado y defunción. La información se obtuvo mediante la revisión de historias clínicas, registros de microbiología, registros de anatomía patológica y certificados de defunción. Resultados: se obtuvo una tasa global de infección de 2,2 por cada 100 egresos del servicio. El 47,5% de los pacientes con infecciones tuvo una afección respiratoria. Las enterobacterias fueron los gérmenes de mayor frecuencia de aislamiento, predominando entre ellos la E. Coli y el enterobacter. El riesgo de morir por infecciones asociadas a la asistencia fue de 4 por 1000 egresos hospitalarios, con un letalidad de un 20,1%. Conclusiones: la vigilancia epidemiológica mostró ser efectiva para la identificación de infecciones asociadas a la asistencia, con una tasa de incidencia hospitalaria adecuada, siendo más frecuentes las infecciones respiratorias sobre todo por enterobacterias, con una mortalidad y letalidad adecuada para este tipo de hospital

Vigilancia epidemiológica de infecciones asociadas a la asistencia sanitaria

Introduction: epidemiological surveillance is useful for identifying the risk of acquiring in hospitals a healthcare-associated infection and other related risk factors. Objective: show the results of epidemiological surveillance of infections in Abel Santamaría Cuadrado General Hospital of Pinar del Río Province. Material and method: An observational, descriptive, prospective study. The study group was composed of the 25 786 patients discharged in 2012 and the sample, by the 578 patients who acquired an infection associated to healthcare. The following variables were used: service of origin, location of infection, isolated organism and death. The information was obtained by reviewing medical, microbiology and pathological anatomy records and death certificates. Results: a generalized infection rate of 2.2 per 100 discharges from service was obtained. 47.5% of patients with infections had a respiratory condition. Enterobacteria were germs isolated the most, predominantly including E. coli and Enterobacter. The risk of dying from healthcare-associated infections was 4 per 1000 hospital discharges with a fatality rate of 20.1%. Conclusions: epidemiological surveillance was effective for identifying healthcare-associated infections with an adequate rate of hospital incidence, being more frequent respiratory infections, especially Enterobacteriaceae, with mortality and lethality suitable for this type of hospital.Introducción: la vigilancia epidemiológica es una herramienta útil para identificar el riesgo de adquirir una infección asociada a la asistencia sanitaria en los hospitales y los factores de riesgo relacionados. Objetivo: demostrar los resultados de la vigilancia epidemiológica de infecciones en el Hospital General Abel Santamaría Cuadrado de la provincia Pinar del Río. Material y método: se realizó un estudio observacional, descriptivo, prospectivo. El universo de estudio quedó constituido por los 25786 pacientes egresados en el año 2012 y la muestra por los 578 pacientes que adquirieron una infección asociada a la asistencia sanitaria. Se utilizaron las variables: servicio de procedencia, localización de la infección, microorganismo aislado y defunción. La información se obtuvo mediante la revisión de historias clínicas, registros de microbiología, registros de anatomía patológica y certificados de defunción. Resultados: se obtuvo una tasa global de infección de 2,2 por cada 100 egresos del servicio. El 47,5% de los pacientes con infecciones tuvo una afección respiratoria. Las enterobacterias fueron los gérmenes de mayor frecuencia de aislamiento, predominando entre ellos la E. Coli y el enterobacter. El riesgo de morir por infecciones asociadas a la asistencia fue de 4 por 1000 egresos hospitalarios, con un letalidad de un 20,1%. Conclusiones: la vigilancia epidemiológica mostró ser efectiva para la identificación de infecciones asociadas a la asistencia, con una tasa de incidencia hospitalaria adecuada, siendo más frecuentes las infecciones respiratorias sobre todo por enterobacterias, con una mortalidad y letalidad adecuada para este tipo de hospital

A phylogenetic framework of the legume genus Aeschynomene for comparative genetic analysis of the Nod-dependent and Nod-independent symbioses

Background : Among semi-aquatic species of the legume genus Aeschynomene, some have the property of being nodulated by photosynthetic Bradyrhizobium lacking the nodABC genes necessary for the synthesis of Nod factors. Knowledge of the specificities underlying this Nod-independent symbiosis has been gained from the model legume Aeschynomene evenia but our understanding remains limited due to the lack of comparative genetics with related taxa using a Nod factor-dependent process. To fill this gap, we combined different approaches to perform a thorough comparative analysis in the genus Aeschynomene. Results: This study significantly broadened previous taxon sampling, including in allied genera, in order to construct a comprehensive phylogeny. In the phylogenetic tree, five main lineages were delineated, including a novel lineage, the Nod-independent clade and another one containing a polytomy that comprised several Aeschynomene groups and all the allied genera. This phylogeny was matched with data on chromosome number, genome size and low-copy nuclear gene sequences to reveal the diploid species and a polytomy containing mostly polyploid taxa. For these taxa, a single allopolyploid origin was inferred and the putative parental lineages were identified. Finally, nodulation tests with different Bradyrhizobium strains revealed new nodulation behaviours and the diploid species outside of the Nod-independent clade were compared for their experimental tractability and genetic diversity. Conclusions: The extended knowledge of the genetics and biology of the different lineages sheds new light of the evolutionary history of the genus Aeschynomene and they provide a solid framework to exploit efficiently the diversity encountered in Aeschynomene legumes. Notably, our backbone tree contains all the species that are diploid and it clarifies the genetic relationships between the Nod-independent clade and the Nod-dependent lineages. This study enabled the identification of A. americana and A. patula as the most suitable species to undertake a comparative genetic study of the Nod-independent and Nod-dependent symbioses

Most Common Adverse Reactions in Local Anesthetics

Los anestésicos locales son ampliamente usados en la práctica clínica en diferentes escenarios, de tal manera que el impacto de los fármacos anestésicos localizados actualmente corresponde a dos tipos: amidas y ésteres. El efecto de dichos fármacos se produce a través de su interacción con canales de sodio dependiente del voltaje, lo que previene la generación y propagación de potenciales de acción en los axones. Por consiguiente se ha realizado una búsqueda bibliográfica de artículos científicos en español e inglés, de diferentes casos donde se evidencia las reacciones adversas que estos anestésicos pueden llegar a ocasionar. Por lo tanto es fundamental saber que al momento de elegir un anestésico local, se debe administrar adecuadamente el medicamento, teniendo en cuenta aspectos como dosis y velocidad de administración, los cuales son factores esenciales para reducir el riesgo de eventos adversos.Local anesthetics are widely used in clinical practice in different scenarios, such that the impact of localized anesthetic drugs currently corresponds to two types: amides and esters. The effect of these drugs occurs through their interaction with voltage-dependent sodium channels, which prevents the generation and propagation of action potentials in the axons. Consequently, a bibliographic search of scientific articles in Spanish and English has been carried out, of different cases where the adverse reactions that these anesthetics can cause are evident. Therefore, it is essential to know that when choosing a local anesthetic, the medication must be administered appropriately, taking into account aspects such as dose and speed of administration, which are essential factors to reduce the risk of adverse events

Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30 to 80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy -- corrected for geometrical effects -- is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal.Comment: Replaced with published version. Added journal reference and DO

Measurement of the Radiation Energy in the Radio Signal of Extensive Air Showers as a Universal Estimator of Cosmic-Ray Energy

We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8 \pm 0.7 (stat) \pm 6.7 (sys) MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy. A comparison with predictions from state-of-the-art first-principle calculations shows agreement with our measurement. The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers. Comparison with our result thus allows the direct calibration of any cosmic-ray radio detector against the well-established energy scale of the Pierre Auger Observatory.Comment: Replaced with published version. Added journal reference and DOI. Supplemental material in the ancillary file

Canagliflozin and renal outcomes in type 2 diabetes and nephropathy

BACKGROUND Type 2 diabetes mellitus is the leading cause of kidney failure worldwide, but few effective long-term treatments are available. In cardiovascular trials of inhibitors of sodium–glucose cotransporter 2 (SGLT2), exploratory results have suggested that such drugs may improve renal outcomes in patients with type 2 diabetes. METHODS In this double-blind, randomized trial, we assigned patients with type 2 diabetes and albuminuric chronic kidney disease to receive canagliflozin, an oral SGLT2 inhibitor, at a dose of 100 mg daily or placebo. All the patients had an estimated glomerular filtration rate (GFR) of 30 to <90 ml per minute per 1.73 m2 of body-surface area and albuminuria (ratio of albumin [mg] to creatinine [g], >300 to 5000) and were treated with renin–angiotensin system blockade. The primary outcome was a composite of end-stage kidney disease (dialysis, transplantation, or a sustained estimated GFR of <15 ml per minute per 1.73 m2), a doubling of the serum creatinine level, or death from renal or cardiovascular causes. Prespecified secondary outcomes were tested hierarchically. RESULTS The trial was stopped early after a planned interim analysis on the recommendation of the data and safety monitoring committee. At that time, 4401 patients had undergone randomization, with a median follow-up of 2.62 years. The relative risk of the primary outcome was 30% lower in the canagliflozin group than in the placebo group, with event rates of 43.2 and 61.2 per 1000 patient-years, respectively (hazard ratio, 0.70; 95% confidence interval [CI], 0.59 to 0.82; P=0.00001). The relative risk of the renal-specific composite of end-stage kidney disease, a doubling of the creatinine level, or death from renal causes was lower by 34% (hazard ratio, 0.66; 95% CI, 0.53 to 0.81; P<0.001), and the relative risk of end-stage kidney disease was lower by 32% (hazard ratio, 0.68; 95% CI, 0.54 to 0.86; P=0.002). The canagliflozin group also had a lower risk of cardiovascular death, myocardial infarction, or stroke (hazard ratio, 0.80; 95% CI, 0.67 to 0.95; P=0.01) and hospitalization for heart failure (hazard ratio, 0.61; 95% CI, 0.47 to 0.80; P<0.001). There were no significant differences in rates of amputation or fracture. CONCLUSIONS In patients with type 2 diabetes and kidney disease, the risk of kidney failure and cardiovascular events was lower in the canagliflozin group than in the placebo group at a median follow-up of 2.62 years

Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study

Background: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods: This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings: This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (74·0%) had emergency surgery and 280 (24·8%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (26·1%) patients. 30-day mortality was 23·8% (268 of 1128). Pulmonary complications occurred in 577 (51·2%) of 1128 patients; 30-day mortality in these patients was 38·0% (219 of 577), accounting for 81·7% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 1·75 [95% CI 1·28–2·40], p\textless0·0001), age 70 years or older versus younger than 70 years (2·30 [1·65–3·22], p\textless0·0001), American Society of Anesthesiologists grades 3–5 versus grades 1–2 (2·35 [1·57–3·53], p\textless0·0001), malignant versus benign or obstetric diagnosis (1·55 [1·01–2·39], p=0·046), emergency versus elective surgery (1·67 [1·06–2·63], p=0·026), and major versus minor surgery (1·52 [1·01–2·31], p=0·047). Interpretation: Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding: National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research

Height and body-mass index trajectories of school-aged children and adolescents from 1985 to 2019 in 200 countries and territories: a pooled analysis of 2181 population-based studies with 65 million participants

Summary Background Comparable global data on health and nutrition of school-aged children and adolescents are scarce. We aimed to estimate age trajectories and time trends in mean height and mean body-mass index (BMI), which measures weight gain beyond what is expected from height gain, for school-aged children and adolescents. Methods For this pooled analysis, we used a database of cardiometabolic risk factors collated by the Non-Communicable Disease Risk Factor Collaboration. We applied a Bayesian hierarchical model to estimate trends from 1985 to 2019 in mean height and mean BMI in 1-year age groups for ages 5–19 years. The model allowed for non-linear changes over time in mean height and mean BMI and for non-linear changes with age of children and adolescents, including periods of rapid growth during adolescence. Findings We pooled data from 2181 population-based studies, with measurements of height and weight in 65 million participants in 200 countries and territories. In 2019, we estimated a difference of 20 cm or higher in mean height of 19-year-old adolescents between countries with the tallest populations (the Netherlands, Montenegro, Estonia, and Bosnia and Herzegovina for boys; and the Netherlands, Montenegro, Denmark, and Iceland for girls) and those with the shortest populations (Timor-Leste, Laos, Solomon Islands, and Papua New Guinea for boys; and Guatemala, Bangladesh, Nepal, and Timor-Leste for girls). In the same year, the difference between the highest mean BMI (in Pacific island countries, Kuwait, Bahrain, The Bahamas, Chile, the USA, and New Zealand for both boys and girls and in South Africa for girls) and lowest mean BMI (in India, Bangladesh, Timor-Leste, Ethiopia, and Chad for boys and girls; and in Japan and Romania for girls) was approximately 9–10 kg/m2. In some countries, children aged 5 years started with healthier height or BMI than the global median and, in some cases, as healthy as the best performing countries, but they became progressively less healthy compared with their comparators as they grew older by not growing as tall (eg, boys in Austria and Barbados, and girls in Belgium and Puerto Rico) or gaining too much weight for their height (eg, girls and boys in Kuwait, Bahrain, Fiji, Jamaica, and Mexico; and girls in South Africa and New Zealand). In other countries, growing children overtook the height of their comparators (eg, Latvia, Czech Republic, Morocco, and Iran) or curbed their weight gain (eg, Italy, France, and Croatia) in late childhood and adolescence. When changes in both height and BMI were considered, girls in South Korea, Vietnam, Saudi Arabia, Turkey, and some central Asian countries (eg, Armenia and Azerbaijan), and boys in central and western Europe (eg, Portugal, Denmark, Poland, and Montenegro) had the healthiest changes in anthropometric status over the past 3·5 decades because, compared with children and adolescents in other countries, they had a much larger gain in height than they did in BMI. The unhealthiest changes—gaining too little height, too much weight for their height compared with children in other countries, or both—occurred in many countries in sub-Saharan Africa, New Zealand, and the USA for boys and girls; in Malaysia and some Pacific island nations for boys; and in Mexico for girls. Interpretation The height and BMI trajectories over age and time of school-aged children and adolescents are highly variable across countries, which indicates heterogeneous nutritional quality and lifelong health advantages and risks

Minimal information for studies of extracellular vesicles (MISEV2023): From basic to advanced approaches

Extracellular vesicles (EVs), through their complex cargo, can reflect the state of their cell of origin and change the functions and phenotypes of other cells. These features indicate strong biomarker and therapeutic potential and have generated broad interest, as evidenced by the steady year-on-year increase in the numbers of scientific publications about EVs. Important advances have been made in EV metrology and in understanding and applying EV biology. However, hurdles remain to realising the potential of EVs in domains ranging from basic biology to clinical applications due to challenges in EV nomenclature, separation from non-vesicular extracellular particles, characterisation and functional studies. To address the challenges and opportunities in this rapidly evolving field, the International Society for Extracellular Vesicles (ISEV) updates its 'Minimal Information for Studies of Extracellular Vesicles', which was first published in 2014 and then in 2018 as MISEV2014 and MISEV2018, respectively. The goal of the current document, MISEV2023, is to provide researchers with an updated snapshot of available approaches and their advantages and limitations for production, separation and characterisation of EVs from multiple sources, including cell culture, body fluids and solid tissues. In addition to presenting the latest state of the art in basic principles of EV research, this document also covers advanced techniques and approaches that are currently expanding the boundaries of the field. MISEV2023 also includes new sections on EV release and uptake and a brief discussion of in vivo approaches to study EVs. Compiling feedback from ISEV expert task forces and more than 1000 researchers, this document conveys the current state of EV research to facilitate robust scientific discoveries and move the field forward even more rapidly