Background: The overall mortality of patients with COVID-19 admitted to intensive care units is approximately 40%. Aim: To describe the characteristics of a cohort of patients with COVID-19 who required invasive mechanical ventilation due to severe hypoxemic acute respiratory failure at a general hospital in Santiago, Chile. Material and Methods: Review of medical records and follow up for 28 days of patients with COVID-19 confirmed by polymerase chain reaction who required invasive mechanical ventilation and who were admitted to the intensive care unit from March 24 to June 7, 2020. Results: Data from 152 patients aged 58 (interquartile range (IQR) 47-65 years (66% men) was analyzed. As of July 5, 36 (24%) had died, 75 (49%) were discharged, 10 (7%) were still on invasive mechanical ventilation, 11 (7%) remained with tracheostomy but without invasive mechanical ventilation, and 20 (13%) were hospitalized in a basic unit. The median time on invasive mechanical ventilation among extubated patients was 14 days (IQR 10-21) and 121 (80%) were in the prone position. Patients who died were older, had a higher frequency of diabetes mellitus and a higher driving pressure at 7 days than those discharged alive from the intensive care unit. Conclusions: In this study mortality was lower than that reported in the first international studies, probably due to the selection of younger patients and greater knowledge of the disease.

RESUMO A alta prevalência de hemorragia pulmonar induzida por exercício (HPIE) em cavalos atletas é um desafio de longa data para a indústria de corridas, além de figurar como grande preocupação sobre o bem-estar animal. As evidências experimentais e clínicas indicam que o uso do plasma rico em plaquetas (PRP) de fonte autógena é promissor na terapêutica de diversas lesões pulmonares. O presente estudo objetivou avaliar as mudanças após corrida no escore endoscópico de HPIE de 37 cavalos Puro-Sangue Inglês que receberam instilação intrabronquial de PRP autólogo. Os animais selecionados eram HPIE-positivos em, ao menos, dois exames endoscópicos consecutivos e recebiam 250mg de furosemida IV administrado quatro horas antes de cada corrida. Na comparação dos escores endoscópicos pré e pós-tratamento, verificou-se que o escore de HPIE do grupo tratado com PRP foi significantemente menor que o dos grupos controle e placebo. Nenhum efeito adverso foi observado nos animais durante ou após o experimento. Concluiu-se que a instilação intrabronquial de PRP autólogo foi efetiva na redução do escore de HPIE de cavalos de corrida usuários de furosemida e que este bioproduto pode ser considerado uma alternativa promissora no controle de HPIE em cavalos atletas.

ABSTRACT The high prevalence of exercise-induced pulmonary hemorrhage (EIPH) in athletic horses constitutes to be a challenge to the racing industry and a source of major concern to animal welfare. Both experimental and clinical evidence indicate that the use of autologous platelet-rich plasma (PRP) is a promising effector of repair in a variety of pulmonary conditions. The present study evaluated the effect of intrabronchial instillation of PRP on EIPH endoscopic scores from 37 Thoroughbred racehorses. Inclusion criteria were for animals to be EIPH-positive in, at least, two consecutive post-exercise endoscopic exams and to receive 250mg of furosemide IV four hours before racing. Animals were randomly assigned into 3 groups: placebo, control, and PRP instillation. All 37 Thoroughbred racehorses included had EIPH endoscopic scores pre- and post- treatment compared by statistical analysis. The bleeding score from the group receiving PRP was significantly lower than in the control and placebo groups. No adverse effects were observed in any animal during or after the experiment. It was possible to conclude that the intrabronchial instillation of autologous PRP was effective in reducing EIPH scores in racehorses receiving furosemide and that this bioproduct can be considered as a promising coadjuvant in controlling EIPH in athletic horses.

For the accurate diagnosis of idiopathic pulmonary fibrosis (IPF), the presence of a definitive tomographic pattern of usual interstitial pneumonia (UIP) is of vital importance, in an appropriate clinical context. Targeted interrogation, the use of valid questionnaires, an acute rheumatologic evaluation and complementary examinations are important to rule out secondary causes such as hypersensitivity pneumonitis (HP), connective tissue diseases (CTD), drug toxicity and some pneumoconiosis that can mimic the radiological pattern and often hinder a clear diagnosis of IPF.

Resumen Para el diagnóstico certero de fibrosis pulmonar idiopática (FPI) es de vital importancia la presencia de un patrón tomográfico definitivo de neumonía intersticial usual (NIU), en un contexto clínico adecuado. El interrogatorio dirigido, el uso de cuestionarios validados, una evaluación reumatológica acuciosa y exámenes complementarios son importantes para descartar causas secundarias de fibrosis pulmonar como neumonitis por hipersensibilidad (NHS), enfermedades del tejido conectivo (ETC), toxicidad por drogas y algunas neumoconiosis que pueden imitar el patrón radiológico y muchas veces dificultar un diagnóstico adecuado de FPI.

En Campeche, se desconocen las especies de trips presentes en mango y su fluctuación poblacional, lo que dificulta su combate y ocasiona pérdidas en producción y calidad de la fruta. Debido a esto, el objetivo del trabajo fue determinar las especies de trips asociadas al cultivo, la fluctuación de su población y el nivel de daño. El trabajo se efectuó entre 2009 y 2010 en Castamay, Campeche, México. Se realizaron muestreos de las poblaciones de adultos y ninfas cada 15 días en follaje e inflorescencias y se determinó el nivel de daño a la fruta. Las poblaciones se correlacionaron con variables de precipitación y temperatura mediante el coeficiente de Pearson y, a través de chi-cuadrada, se establecieron variaciones entre las poblaciones de trips y fechas de muestreo. En 2009, la población más baja fue de 0,00 y la más alta 0,13 por hoja tanto en ninfas como en adultos. En 2010, la población más baja fue de 0,00 individuos por hoja tanto para ninfas como para adultos y las más altas de 0,15 adultos por hoja y 0,35 ninfas por hoja. Los niveles de daño observados fueron bajos y no mostraron influencia significativa en la producción de fruta. Se registraron Heliothrips haemorrhoidalis, Frankliniella invasor, Scirtothrips perseae y S. hectorgonzalazi asociadas al cultivo, todas ellas fitófagas. La fluctuación de sus poblaciones no mostró correlación significativa con las variables climáticas.

In the Campeche state, México, thrips species in mango and their population fluctuations are unknown which difficult their control causing losses in production and fruit quality; thus, the objective of this study was to determine the thrips associated with the crop, their population fluctuation and the level of damage. Research was carried out during 2009 and 2010 in Castamay, Campeche, Mexico. Samples were taken of the adults and nymph's population every 15 days in foliage and inflorescences and the level of damage to the fruit was determined. Thrips population was correlated with precipitation and temperature variables using the Pearson coefficient and χ2 tests were performed between thrips population and sampling dates. In 2009, the lowest population was 0.00 and 0.13, the highest per leave in both nymphs and adults. In 2010, the lowest populations were 0.00 individuals per leaf for both nymphs and adults and the highest of 0.15 adults per leaf and 0.35 nymphs per leaf. The observed damage levels were low and showed no significant influence on fruit production. Four thrips species associated with mango, all phytophagous were found Heliothrips haemorrhoidalis, Frankliniella invasor, Scirtothrips perseae and S. hectorgonzalazi. The population fluctuation was not significantly correlated with climatic variables.

In the east of the province of Salta there is a process of expansion of the livestock that is associated with the replacement of native forests by tropical pastures through total clearing or selective clearing. The first method removes all the vegetation, while the second left trees and shrubs from among which pasture is sown. The aim of this study was to describe and quantify changes in soil quality and condition of pastures in the Chaco Salta ranches. For the descriptor “soil”, then organic matter, total nitrogen, particulate carbon, bulk density and stability of soil aggregates indicators were assessed. These were determined based on paired samples obtained on transects, one on the natural condition and the other on the pasture, calculating the percentage change. For the descriptor “pasture”, the indicators analyzed were bare soil, weeds, height and vigor, through a numeric index. We conclude that the condition of pastures is related to the physical indicators of soil and the clearing the method used.

En el este de la provincia de Salta se observa un proceso expansivo de la ganadería que está asociado con el reemplazo del monte nativo por pasturas tropicales a través de desmonte total o de desmonte selectivo. Con el primero se elimina toda la vegetación presente, mientras que con el segundo se dejan los árboles y parte de los arbustos entre los que se siembra la pastura. El objetivo de este trabajo fue describir y cuantificar cambios de la calidad de los suelos y de la condición de las pasturas en fincas ganaderas del Chaco salteño. Para el descriptor suelo, se evaluaron los indicadores materia orgánica, nitrógeno total, carbono particulado, densidad aparente y estabilidad de los agregados del suelo, los que se determinaron en base a muestras obtenidas sobre transectas apareadas, una sobre la condición natural (monte) y la otra sobre la condición modificada (pastura), calculándose el porcentaje de cambio. Las pasturas se evaluaron mediante un índice numérico que reúne los indicadores: altura, vigor y cobertura del suelo por la pastura y presencia de malezas. Se concluye que la condición de las pasturas se relaciona con los indicadores físicos de los suelos, así como con el método de desmonte utilizado.

The aid of this study is compare the sealed quality of root canals filled with two obturations systems, GuttaFlow or Flow System Technique (GF) and Lateral Compactation Technique (LC). Methodology: Forty-four palatal roots of molar teeth were prepared and divided randomly in two groups to be obturated with the flow system technique and Lateral Compactation Technique. The samples were radiographed and cut cross-sectionally by roots thirds for its microscopic evaluation. The obturations quality parameters evaluated were extension obturation, adaptation to the walls of the root canal and presence of pores/fissures/vacuolas inside the obturation. Results: No statistical difference amongst the filling techniques except between adaptation to the walls of the root canal in medium and cervical thirds and absence of pores/fissures/vacuolas in cervical third in which LC displayed better results. Conclusions: The new flow material obturation it did not demostrated to improve the quality of root obturation to the being compared with the LC technique.

El propósito de este estudio es comparar la calidad de la obturación radicular obtenida al obturar con GuttaFlow® (GF) y con la Técnica de Compactación Lateral (LC). Metodología: Se utilizaron 44 raíces palatinas de molares superiores extraídos las cuales fueron preparadas y divididas aleatoriamente en 2 grupos para ser obturadas con la técnica del sistema fluido (GF) y la Técnica de Compactación Lateral en frío. Las muestras fueron radiografiadas y cortadas transversalmente para su evaluación microscópica por tercios radiculares. Los parámetros de calidad de obturación evaluados fueron la extensión de la obturación, la adaptación a las paredes del conducto radicular y la presencia de poros/fisuras/vacuolas en el interior de la masa obturadora. Resultados: No se encontraron diferencias significativas en la calidad de la obturación de los 2 grupos estudiados, exceptuando la adaptación a las paredes en tercio cervical y medio, y la presencia de poros en tercio cervical, en los cuales el grupo LC presentó mejores resultados. Conclusiones: El nuevo material fluido de obturación no demostró mejorar la calidad de la obturación radicular al ser comparado con la técnica de LC.

Vegetation represents a potential for determining technical elements that contribute to the restoration of the environment in urban areas. For this reason, a study in the city of Chihuahua was developed to determine the capacity of concentration of heavy metals in five tree species to establish them as an indicator of environmental quality. It was rated the leaf material of 75 trees during the autumn, spring and summer seasons. The sampling sites were established pursuant to land uses: commercial and services, mixed industry, heavy industry, highmiddle residential class and low popular residential. Applying Technology ICP-OES, optical spectrometry inductively coupled plasma, were measured concentrations of Ni, Cu, Co, V, Ti, Pb and Cd. Adjusting a model with Minitab program were the interactions tested between the species, site and season regarding concentrations of heavy metals, which themselves were determined through square means. It is emphasizes that the species factor was with Ni (P <0,037), Co (P<0,071), V (P <0,005), Ti (P<0,001) and Pb (P <0,026). Cypress (Cupressus arizonica) proved to be the species with greater holding capacity of these metals, being sites that these metals were more concentrated residential low class area modality in the autumn and heavy industry in the spring. These results provided elements for urban environmental policy and the need for indicator species to determine the status of environmental quality and can be used as phytoremediation.

La vegetación representa un potencial para determinar elementos técnicos que contribuyan en la restauración del medio ambiente dentro de las zonas urbanas. Por tal motivo, se desarrolló un estudio en la ciudad de Chihuahua (México) para conocer la capacidad de concentración de metales pesados en cinco especies arbóreas con la finalidad de establecerlas como indicadoras de la calidad ambiental. Fue evaluado el material foliar de 75 árboles durante las temporadas de otoño, primavera y verano. Los sitios de muestreo se establecieron conforme a los usos de suelo: comercial y servicios, industria mixta, industria pesada, residencial clase media-alta y residencial popular. Aplicando la Técnica ICP-OES, espectrometría óptica con plasma acoplado inductivamente, fueron determinadas las concentraciones de Ni, Cu, Co, V, Ti, Pb y Cd. Ajustando un modelo con el programa de Minitab se probaron las interacciones entre los factores especie, sitio y temporada, con respecto a las concentraciones de metales pesados, mismas que fueron determinadas a través de las medias de los cuadrados mínimos. Destaca que el factor especie fue significativo con Ni (P<0,037), Co (P<0,001), V (P<0,005), Ti (P<0,001) y Pb (P<0,026). El Ciprés (Cupressus arizonica) resultó ser la especie con mayor capacidad de retención de estos metales y los sitios que concentraron más fueron la zona residencial modalidad popular en otoño y la industria pesada en primavera. Con estos resultados se aportan elementos para la política ambiental urbana y la necesidad de contar con especies indicadoras que determinen el estado que guarda la calidad ambiental y que pueden ser utilizadas para la restauración ambiental.

In an attempt to obtain an interpretation of the observed temporal gravity changes related to crustal vertical motions, we describe a methodology using accurate gravity measurements within a fixed network. In Argentina, this is the first gravity survey measured in a network configuration for crustal monitoring studies at a local scale. The network contains the Sierra Chica de Zonda (San Juan Eastern Precordillera), a region of active tectonics. The main goal is to test a geophysical tool useful to quantify probable vertical ground deformations and/or subsurface mass changes associated with seismic activity.

Se detallan los requerimientos para el procedimiento de medición de redes precisas de gravedad que permitan obtener una interpretación de los cambios temporales de gravedad observados con relación a movimientos verticales en la corteza. Para Argentina, esta es la primera medición de gravedad en red realizada con fines de monitoreo cortical a escala local. Los vértices de la red prácticamente rodean a la sierra Chica de Zonda (Precordillera Oriental de San Juan) caracterizada como una región de fallamiento activo. El objetivo científico del experimento es el ensayo de esta herramienta geofísica para cuantificar probables deformaciones verticales y/o cambios de masas subsuperficiales vinculados con actividad sísmica.

The synthesis of chitosan and resulting chitosan composite films was carried out using glycerol, tween, and beeswax as additives to prepare the composites films, after which a complete study by FTIR was carried out for all the chitosan composite films. Several differences in the absorption bands were seen for each composite, confirming the presence of the material incorporated therein. Thermal stability was studied by thermogravimetric analysis, which further verified the differences between pure chitosan films and the series of composite films. The composite films are good alternatives to existing food storage materials due to important similarities with commercial polypropylenes, not to mention their environmental advantages as regards improved degradability

Chitosan films or membranes can be obtained by casting chitosan solutions in acetic acid at 1 % w/v concentration at room temperature. The films set were elaborated from 2% chitosan solutions mixed with three plasticizers (polyethylene glycol 200 (PEG), sorbitol and glycerol) and two surfactants (Tween 60 and Tween 80) at two concentrations. The goal was to decrease the water vapor permeability and to improve the mechanical properties of chitosan films. The effects of plasticizers (PEG, sorbitol and glycerol) and emulsifiers (Tween 60 and Tween 80) at two concentrations from chitosan solution on water vapor permeability and mechanical properties of cast films were evaluated. Water vapor permeability ranged from 3.64 to 6.56 g mm / h m² KPa., tension force from 7.23 to 48.3 MPa and elongation percentage from 22.9 to 167.02 were obtained. Chitosan two percent with 0.3 % Tween 80 produces films that showed the lowest permeability value. Chitosan with 0.6 % glycerol has the highest percentaje of elongation, being 4.5 times higher than chitosan films. Chitosan with 0.6% Tween 80 improved the hydrophobicity of the chitosan film in 1.14 times. The highest value for tension force was found for chitosan with 0.6 % of Tween 60. These values are similar to some polymers based on mineral oil

Tuberculosis (TB) is a disease caused by Mycobacterium tuberculosis whose interaction with the host may lead to a cell-mediated protective immune response. The presence of interferon<FONT FACE=Symbol>-g</FONT> (IFN-gamma) is related to this response. With the purpose of understanding the immunological mechanisms involved in this protection, the lymphoproliferative response, IFN<FONT FACE=Symbol>-g</FONT> and other cytokines like interleukin (IL-5, IL-10), and tumor necrosis factor alpha (TNF<FONT FACE=Symbol>-a</FONT>) were evaluated before and after the use of anti-TB drugs on 30 patients with active TB disease, 24 healthy household contacts of active TB patients, with positive purified protein derivative (PPD) skin tests (induration > 10 mm), and 34 asymptomatic individuals with negative PPD skin test results (induration < 5 mm). The positive lymphoproliferative response among peripheral blood mononuclear cells of patients showed high levels of IFN<FONT FACE=Symbol>-g</FONT>, TNF<FONT FACE=Symbol>-a</FONT>, and IL-10. No significant levels of IL-5 were detected. After treatment with rifampicina, isoniazida, and pirazinamida, only the levels of IFN<FONT FACE=Symbol>-g</FONT> increased significantly (p < 0.01). These results highlight the need for further evaluation of IFN<FONT FACE=Symbol>-g</FONT> production as a healing prognostic of patients treated.

Chitosan was obtained from shrimps shells (pleuroncodes monodon) using chemical methods. A series of chitosan (QS)charged with solution of copper, cobalt, nickel and mercury ions were prepared at room temperature using the batch method. N-3,5-diethylamino benzoyl chitosan (QDAB); N,O-dimercapto succinate chitosan (QNOT) and 4-aminobenzoate chitosan (QAB) derivatives were prepared. The chitosan metal adducts with Cu, Co, Ni and Hg ions and derivatives maximum loading is discussed. Chitosan and derivatives containing copper were analyzed by SEM to find out the morphology of the polymers. Chitosan-Cu and derivatives charged, QDAB-Ni and QDAB-Hg were analyzed by EDX to verify the presence of the metal in the polymeric chain

Chitosan films are known as a good oxygen and carbon dioxide barrier. However, chitosan composite films containing mixtures with emulsifier and plastifiers are able to improve their physicomechanical properties. The addition of glycerol, tween 80 and wax into the films ensure the water permeability and improve mechanical properties such as elongation, tension force and elastic modulus. This novel materials exhibit a potential to be used as biodegradable food packing.

Se conoce que las películas de quitosán son buenas barreras al oxígeno y al dióxido de carbono. No obstante, las películas de quitosán mezcladas con emulsificantes y plastificantes mejoran sus propiedades fisicomecánicas. La adición de glicerol, tween 80 y cera a las películas, aseguran la permeabilidad al agua y mejoran las propiedades mecánicas como elongación, fuerza de tensión y módulo elástico. Este material novedoso potencialmente puede ser usado como empaque de alimentos biodegrdable.

Con el objetivo de evaluar el efecto que ejerce adicionar harina de carne en bloques multinutricionales (BMN) sobre la digestibilidad y el consumo voluntario de las diversas fracciones de la ración, se realizó un ensayo, utilizándose un diseño de experimento completamente al azar. Para tal fin se seleccionaron 25 ovinos mestizos en crecimiento (12-18 kg PV). Los animales se ubicaron en jaulas metabólicas, asignados a 5 tratamientos (5 animales/tratamiento): T0: heno de Brachiaria humidicola + minerales, T1: heno + BMN con 0% de harina de carne (HC), T2: heno + BMN con 4% de HC, T3: heno + BMN con 8% de HC y T4 : heno + BMN con 12% de HC. Se analizaron los consumos de: heno (CH), relativo de heno (CRH= % PV) de bloques (CB), relativo de bloques (CRB= % PV), de materia seca (MS, CMS=CH+CB), relativo de MS (CRMS= % PV), de materia orgánica (MO, CMO) y consumo relativo de MO (CRMO= % PV). Igualmente se analizaron las digestibilidades de la MS (DMS) y la MO, (DMO). El análisis de varianza no detectó diferencias en CH, CRH, CB y CRB. CMS, CMO, CRMS y CRMO (P<0,05) fueron significativamente superiores en los animales que consumieron BMN, obteniéndose valores para CRH, CRB, CRMS y CRMO de: 2,73, 3,11, 2,98, 3,07 y 2,85% PV; 0, 1,22, 1,09, 1,48 y 1,39% PV; 2,73, 4,33, 4,07, 4,55 y 4,25%PV; y de 2,65, 3,87, 3,64, 3,98 y 3,76% PV para T0, T1, T2, T3 y T4, respectivamente. Se observaron diferencias significativas para DMS (P<0,05) a favor de T1, T2, T3 y T4, no existiendo diferencias estadísticas para DMO con valores para ambas variables de: 39,4, 47,4, 42,4, 43,8 y 50,7% y de 42,2, 47,3, 43,9, 43,2 y 48,6% para T0, T1, T2, T3 y T4, respectivamente.

To evaluate the effect of adding meat meal in multinutritional blocks (MNB) on digestibility and voluntary intake of the different fractions of the ration, a trial was carried out, using a completely randomized design. Twenty five crossbred lambs (12 - 18 kg liveweight-LW) were selected. The animals were housed in metabolic stalls and asigned to five treatments: T0: Brachiaria humidicola hay ad libitum + mineral mix, T1: hay ad libitum + MNB with 0% of meat meal (MM), ad libitum, T2: hay ad libitum + MNB with 4% of MM, ad libitum, T3: hay ad libitum + MNB with 8% of MM ad libitum and T4: hay ad libitum + MNB with 12% OF MM, ad libitum. The hay intake (HI), relative intake of hay (RIH), MNB intake (BI), relative intake of MNB (RIB), dry matter intake (DMI = HI + BI), relative intake of dry matter (RIDM), organic matter intake (OMI), relative intake of organic matter (RIOM) and the digestibilities of DM (DMD) and OM (OMD) were analized. No statistical differences were detected for HI, RIH, BI and RIB. The OMI (P<0.05), RIDM and RIOM (P<0.01) were statisticaly differents between treatments. Values obtained for RIH, RIB, RIDM and RIOM were: 2.73, 3.11, 2.98, 3.07 and 2.85% LW; 0, 1.22, 1.09, 1.48 and 1.39% LW; 379, 617, 651, 658 and 642 g/animal/d, 2.73, 4.33, 4.07, 4.55 and 4.25% LW and 2.65, 3.87, 3.64, 3.98 and 3.76% LW for T0, T1, T2, T3 y T4, respectively. Statistical differences were detected for DMD (P<0.05), but not for OMD. Values obtained for both variables were: 39.4, 47.4, 42.4, 43.8 and 50.7% and 42.2, 47.3, 43.9, 43.2 and 48.6% for T0, T1, T2, T3 and T4, respectively.

The Cuyo Basin is a part of the Triassic basin set developed in the Andean foreland of Argentina. The origin of this structure has been postulated as being the result of extensional stresses. Crustal thinning is a characteristic structural feature of palaeorifts, although its identification is sometimes obliterated by sedimentary fill and later tectonic events. An analysis of the gravity data of the basin area was undertaken in order to complement the geological interpretation. The gravity effects of the sedimentary fill and the Andean root westward were computed and then removed from the measured gravity anomalies. Seismic velocities and thicknesses were incorporated to compute the gravity effect of the sedimentary fill, and a balanced Airy isostatic model was used to determine the gravity effect of the Andean root. Trend-surface filtering enabled us to establish the existence of gravity highs over the basin. In addition, the isostatic analysis, assuming anti-roots at Moho level under the basin, showed a present state of slight overcompensation indicating that the basin area should subside in future times in order to achieve balance. 2-D gravity modelling of two cross sections of Moho topography at approximately 33° 30' and 35° south. latitude indicates that the Moho is shallower under the basin. From these results a model is proposed which incorporates a slightly thinned crust to justify the present excesses of gravity for the crustal structure of the Cuyo Basin.

La cuenca Cuyana forma parte del conjunto de cuencas triásicas desarrolladas en el antepaís andino de Argentina. El origen de esta estructura ha sido postulado como el resultado de esfuerzos extensionales. La atenuación cortical es un rasgo estructural característico de los paleo-rifts, aunque su identificación es a veces complicada por la cubierta sedimentaria y los eventos tectónicos posteriores. Con el objeto de contribuir a la interpretación geológica, se analizó el campo de gravedad medido sobre la misma. Para este estudio, los efectos de gravedad del relleno sedimentario de la depresión y de la raíz andina al oeste fueron calculados y luego removidos de las anomalías de gravedad observadas. Información sísmica de velocidades y espesores fueron incorporados para el cómputo del efecto de gravedad del relleno sedimentario. Un modelo isostático balanceado en la hipótesis de Airy sirvió para modelar el efecto de gravedad de la raíz andina. El filtrado de superficies de tendencia nos permitió establecer la existencia de máximos de gravedad sobre la cuenca propiamente dicha. Además, el análisis isostático en el concepto de Airy, postulando anti-raíces a nivel de Moho bajo la depresión, indicó un estado actual de leve sobrecompensación. En este sentido la cuenca debería, en lo futuro, subsidir para alcanzar el equilibrio. El modelado gravimétrico sobre dos secciones transversales en 33° 30' y 35° de latitud sur, en términos de la topografía de Moho, señalan que el Moho sería más somero bajo la cuenca. Estos resultados indican que un modelo que admite leve atenuación cortical actual para justificar los excesos de gravedad, es factible de ser postulado para la estructura cortical de la cuenca Cuyana.