Life Satisfaction and Academic Engagement in Chileans Undergraduate Students of the University of Atacama.

The growing problem of mental health in the university population, as a consequence of the COVID-19 pandemic, has generated the need to consider positive variables to address this situation. Life satisfaction and academic engagement are two constructs that emerge as conceptual tools oriented in this direction. The present study sought to describe the effect of academic engagement on life satisfaction in a sample of Chilean university students. A cross-sectional co-relational design was used. A total of 370 university students participated, 72.4% female and 27.6% male, aged beitive effect of engagement on life satisfaction was demonstrated, where the dimensions vigor (ß = 0.462; p < 0.01) and dedication (ß = 0.465; p < 0.01) acted as significant predictors (χ2 = 87.077, gl = 32, p < 0.01; χ2/gl = 2.721; CFI = 975; TLI = 0.964; RMSEA = 0.068). The proposed model showed factorial invariance according to sex. The usefulness of employing these constructs as a way to manage the well-being and mental health of students in university institutions is discussed.

Seagrass blue carbon stocks and sequestration rates in the Colombian Caribbean.

Seagrass ecosystems rank amongst the most efficient natural carbon sinks on earth, sequestering CO2 through photosynthesis and storing organic carbon (Corg) underneath their soils for millennia and thereby, mitigating climate change. However, estimates of Corg stocks and accumulation rates in seagrass meadows (blue carbon) are restricted to few regions, and further information on spatial variability is required to derive robust global estimates. Here we studied soil Corg stocks and accumulation rates in seagrass meadows across the Colombian Caribbean. We estimated that Thalassia testudinum meadows store 241 ± 118 Mg Corg ha-1 (mean ± SD) in the top 1 m-thick soils, accumulated at rates of 122 ± 62 and 15 ± 7 g Corg m-2 year-1 over the last ~ 70 years and up to 2000 years, respectively. The tropical climate of the Caribbean Sea and associated sediment run-off, together with the relatively high primary production of T. testudinum, influencing biotic and abiotic drivers of Corg storage linked to seagrass and soil respiration rates, explains their relatively high Corg stocks and accumulation rates when compared to other meadows globally. Differences in soil Corg storage among Colombian Caribbean regions are largely linked to differences in the relative contribution of Corg sources to the soil Corg pool (seagrass, algae Halimeda tuna, mangrove and seston) and the content of soil particles < 0.016 mm binding Corg and enhancing its preservation. Despite the moderate areal extent of T. testudinum in the Colombian Caribbean (661 km2), it sequesters around 0.3 Tg CO2 year-1, which is equivalent to ~ 0.4% of CO2 emissions from fossil fuels in Colombia. This study adds data from a new region to a growing dataset on seagrass blue carbon and further explores differences in meadow Corg storage based on biotic and abiotic environmental factors, while providing the basis for the implementation of seagrass blue carbon strategies in Colombia.

Spatial and temporal changes of dissolved oxygen in waters of the Pajarales complex, Ciénaga Grande de Santa Marta: Two decades of monitoring.

Ciénaga Grande de Santa Marta lagoon complex, located in the Colombian Caribbean, is a highly degraded estuarine system, in which massive deaths of organisms have occurred since the 1990s, causing socioeconomic effects on the inhabitants, who are mostly artisanal fishermen. These deaths have been attributed to the deoxygenation of the water at night, as a result of the eutrophication of the system. To understand the variability of dissolved oxygen and its relationship with other water quality variables, the monthly time series collected between 2001 and 2019, in seven stations of the Pajarales Complex (western side of the estuarine complex), were analyzed. Analyzes showed that there are significant differences between stations, as well as between the surface and the bottom of the water, indicating that the behavior of oxygen in the system is not homogeneous, a product of the hydrodynamics of the system. Also, temporal differences were found related to the periods of rain and drought, even with larger-scale climatic events such as El Niño and La Niña, with the lowest concentrations being recorded during the rainy seasons. On the other hand, the analysis of the time series of the average surface temperature of the seven stations analyzed showed a slight tendency to increase over time. Results indicate that the system is very dynamic and its oxygenation conditions are determined by climatic factors that promote changes in water chemistry, such as variations in salinity, temperature, and pH, and biological activity, determined by the abundance of the organisms. Analysis of this information becomes a tool to propose an alert system that allows reducing the impact of deaths.

Root Canal Filling after Revascularization/Revitalization.

INTRODUCTION: Revascularization/revitalization therapy is considered an alternative procedure for management of teeth with an immature apex and necrotic pulp, mainly when root development is interrupted in the early phases of formation. However, this clinical treatment protocol should be considered a permanent procedure? METHOD: A maxillary central incisor with a previous and successful RR treatment was intentionally filled with a biocompatible material with the periapical tissues due to the patient's lack of adherence to the follow-up protocol. RESULTS: The 20-month follow-up showed absence of clinical, radiological and tomographic signs and symptoms of an endodontic re-infection. CONCLUSION: This case demonstrates that once the increased thickening of the canal walls, incrementing the root length, apical closure and the total resolution of the apical lesion are observed, the main canal of a previously treated tooth with an RR procedure can be filled.

Síndrome del lóbulo medio secundario a Mycoplasma pneumoniae: presentación de un caso / Middle lobe syndroe secondary to Mycoplasma pneumoniae: report of a case

Se muestra la historia clínica de una paciente ingresada en el Hospital Docente Clinicoquirúrgico "Joaquín Albarrán", la cual presentó en los estudios radiológicos imagen de condensación en la zona correspondiente al lóbulo medio del pulmón derecho, que en los diagnósticos diferenciales obligaba a descartar la presencia de neoplasia. Se informa que los estudios de laboratorio, radiológicos y bacteriológicos demostraron que se trataba de una atelectasia ocasionada por un tapón mucoso localizado en el bronquiotronco derecho y casi junto a la carina, que resultó secundario a la presencia de Mycoplasma pneumoniae, lo que constituyó un cuadro clínico de neumonía atípica primaria (AU)

Síndrome del lóbulo medio secundario a Mycoplasma pneumoniae: presentación de un caso / Middle lobe syndrome secondary to Mycoplasma pneumoniae: report of a case

Se muestra la historia clínica de una paciente ingresada en el Hospital Docente Clinicoquirúrgico "Joaquín Albarrán", la cual presentó en los estudios radiológicos imagen de condensación en la zona correspondiente al lóbulo medio del pulmón derecho, que en los diagnósticos diferenciales obligaba a descartar la presencia de neoplasia. Se informa que los estudios de laboratorio, radiológicos y bacteriológicos demostraron que se trataba de una atelectasia ocasionada por un tapón mucoso localizado en el bronquiotronco derecho y casi junto a la carina, que resultó secundario a la presencia de Mycoplasma pneumoniae, lo que constituyó un cuadro clínico de neumonía atípica primaria

Hipoglicemia como manifestación de sepsis bacteriana grave / Hypoglycemia as manifestation of severe bacterial sepsis

Se revisan los protocolos de necropsia y las historias clínicas (HC) de los pacientes con sepsis severa, diagnosticados en nuestro centro en un período de tres años (1977-1979). Se obtuvieron las cifras de glicemia que coincidieran con el cuadro clínico más expresivo de sepsis severa. Se establece la importancia de la hipoglicemia en la evolución y complicación de los cuadros sépticos, y se insiste en la necesidad de esta investigación durante las enfermedades infecciosas. Se hacen comparaciones de nuetros resultados con los obtenidos en otras investigaciones (AU)