Resumen: Objetivo: Caracterizar la lesión renal aguda (LRA) para describir el patrón etiológico, manifestaciones clínicas y de laboratorio. Material y métodos: Diseño observacional, retrospectivo tipo serie de casos. Se analizaron los registros de 88 pacientes, atendidos en la Unidad de Nefrología de un Hospital en la República Dominicana, sin importar el estadio de la enfermedad. Resultados: Encontramos que la edad media es 64 años con una TFG 17 mL/min/1.73 m2. El principal motivo de ingreso como de interconsulta es la “elevación de azoados” con 7.51% (n= 19 / 253) y 29.90% (n=58 / 194), respectivamente. El diagnóstico final más común fue la anemia con un 17.09% (n=50 / 396), la hipertensión arterial con un 34.16% (n=55 / 151) fue la comorbilidad predominante. La mayoría de pacientes no tuvo ningún antecedente medicamentoso con un 31.17% (n=48 / 154), la intervención más común fue el uso de fluidos en un 40.83% (n=49 / 120). El hallazgo clínico más descrito fueron los campos pulmonares hipoventilados 42,72% (n=44 / 103). Conclusiones: Recomendamos poner en funcionamiento acciones que ayuden con un oportuno diagnóstico y tratamiento temprano de la LRA en el hospital.

Abstract: Objective: To characterize acute kidney injury (AKI) and describe its etiological pattern, clinical and laboratory manifestations. Material and methods: Retrospective, observational design, case series type. We analyzed the records of 88 patients treated in the nephrology unit of a hospital in the Dominican Republic, regardless of the stage of the disease. Results: We found that the average age is 64 years with a GFR 17mL/min/1.73 m2. The main reason for admission and consultation is the “elevation of BUN and creatinine levels” with 7.51% (n= 19 / 253) and 29.90% (n=58 / 194), respectively. The most common final diagnosis was anemia 17.09% (n=50 / 396), hypertension with 34.16% (n=55 / 151) was the predominant comorbidity. The majority of patients had no medication history with 31.17% (n=48 / 154), the most common intervention performed was fluid use with 40.83% (n=49 / 120). The most frequently described clinical finding was hypoventilated lungs with 42, 72% (n=44 / 103). Conclusions: We recommend the implementation of actions to improve the timely diagnosis and management of AKI in the hospital.

Resumo: Objetivo: Caracterizar a lesão renal aguda (LRA) prá descrever o padrão etiológico, manifestações clinicas e do laboratório. Métodos: Modelo observacional, retrospectivo tipo série de casos. Foram analisados os registros de 88 pacientes, antendidos na Unidade de Nefrología dum Hospital na República Dominicana, sem importar o estágio da doença. Resultados: Encontramos que a edade média é 64 anos com uma TFG de 17 mL/min/1.73 m2. A razão principal da admissão e interconsulta é a “elevação de azoados” com 7.51% (n=19/253) e 29.90% (n=58/194), respectivamente. O diagnóstico final mais comum foi a anemia com um 17.09% (n=50/396), a hipertensão arterial com um 34.16% (n=55/151) foi a comorbidade predominante. A maioria dos pacientes não tinha histórico medicinal com um 31.17% (n=48/154), a intervenção mais comum foi o uso de fluidos num 40.83% (n=49/120). O achado clínico mais comum foi campos pulmonares hipoventilados 47.72% (n=44/103). Conclusões: Recomendamos colocar em operação ações que ajudam com um diagnóstico oportuno e um tratamento precoce da LRA no hospital.

The aim of this study was to analyze the morphological variation of brown trout (Salmo trutta) in the Duero basin, an Atlantic river basin in the Iberian Peninsula, where a spatial segregation of two divergent lineages was previously reported, based on isozyme, microsatellite and mtDNA data. In these studies, two divergent pure regions (Pisuerga and Lower-course) and several hybrid populations between them were identified. Morphological variation was evaluated in 11 populations representative of the genetic differentiation previously observed in the Duero basin, using multivariate analysis on 12 morphometric and 4 meristic traits. A large differentiation between populations was observed (interpopulation component of variance: 41.8%), similar to that previously detected with allozymes and microsatellites. Morphometric differentiation was also reflected by the high classification success of pure and hybrid individuals to their respective populations, using multivariate discriminant functions (94.1% and 79.0%, respectively). All multivariate and clustering analyses performed demonstrated a strong differentiation between the pure regions. The hybrid populations, though showing large differentiation among them, evidenced an intermediate position between the pure samples. Head and body shape traits were the most discriminant among the morphometric characters, while pectoral rays and gillrakers were the most discriminant among the meristic traits. These results confirmed the high divergence of the brown trout from the Duero basin and suggest some traits on which selection could be acting to explain the spatial segregation observed.

The fish order Pleuronectiformes, composed of 14 families, has two suborders: Psettodoidei (with one family) and Pleuronectoidei (with thirteen families). The relationships among families of Pleuronectoidei and among the genera of their families have extensively been debated and a consensus has not yet been reached. In the present study, partial sequences of the 12S and 16S mitochondrial rRNA genes were obtained from 19 species belonging to the families Achiridae, Bothidae, Cynoglossidae, Paralichthyidae, Pleuronectidae, Scophthalmidae, and Soleidae. Additional sequences of 42 pleuronectiform species were obtained from GenBank. Phylogenetic analyses were conducted by the methods of maximum-parsimony, maximum-likelihood and Bayesian inference. Our results corroborate the monophyletic status of all families, excluding Paralichthyidae. In the family Achiridae, the genus Catathyridium (freshwater) was the sister group of Trinectes (saltwater), and Hypoclinemus (freshwater) was the sister group of Achirus (saltwater). Assuming that the putative ancestor of achirids lived in saltwater, it is suggested that the freshwater habitats in South America were colonized independently by different achirid lineages.