Introducción: Las lesiones de vía biliar como consecuencia de colecistectomía convencional o laparoscópica son una complicación seria a corto y largo plazo; la reconstrucción quirúrgica puede ser alterada por numerosos factores de riesgo. Objetivo: Determinar los factores de riesgo asociados a la falla terapéutica en las reconstrucciones de lesiones de vía biliar secundarias a colecistectomía en el Hospital Nacional Guillermo Almenara Irigoyen durante el periodo 2012 – 2021 Métodos: Evaluación de resultados de forma retrospectiva, tras la reparación quirúrgica de la lesión de vía biliar y los posibles factores de riesgo de malos resultados desde 2012 hasta 2021. Resultados: No ejecutado Conclusiones: No ejecutado

Cryptocurrencies are a growing market that has attracted the attention of many investors in recent years. While cryptocurrencies offer a secure and decentralized form of payment, this market is highly volatile. Factors influencing price changes include the balance of supply and demand, its utility, trading indicators, and market confidence. The present research aims to predict the price of the Cardano cryptocurrency by using machine learning techniques, specifically SVM, LSTM and BiLSTM models. In addition to accounting for financial indices, Twitter activity was used as a data source to measure market sentiment. The study analyzes various predictive horizons, including time ranges of 1 day, seven days, 14 days, 21 days and 30 days. The results obtained were validated with different performance indicators, and it was determined that the model predicts Cardano prices one month ahead with ...

We present an updated list of bird species from Department of Loreto. The list is based on the review of specimens from scientific collections, historical records, publications, and field observations. We report 1040 species of birds in Loreto, 72 in some threat category, 72 migratory and 13 endemics to Peru. Percnostola arenarum, Pithys castaneus and Polioptila clementsi are endemics to Loreto. The families with the highest numbers of species are Tyrannidae, Thamnophilidae and Thraupidae. The list presented is highly reliable due to the support of about 81% of the species on specimens from scientific collections and only 1.5% from sighting reports by ornithologists. Bird species from Loreto represent about 55% of the total reported for Peru and in Passeriformes 52% of those estimated for the Amazonia. The distribution of reports shows that it is necessary to explore areas close to the r...

In 1542 Orellana arrived in the Amazon and began a history of continuous exploration of Loreto. However, the birds’ study of Loreto began in the 19th century with the explorations of Johann Baptist von Spix, Johann Jakob von Tschudi, Francis-Louis de Castelnau, Emile Deville, Edward Bartlett, John Hauxwell and Henry Walter Bates, who collected for European and American museums. In 1850 Antonio Raimondi arrived in Peru, joining the Universidad Nacional Mayor de San Marcos, and starting national studies of birds of Loreto in 1859 and 1869. Raimondi actively collaborated with Władysław Taczanowski, assisted by Konstanty Jelski and Jan Stolzmann, whose collections in Loreto were used in Ornithologie du Pérou, the first treatise on Peruvian avifauna. Some of these specimens are preserved in the Museo de Historia Natural of the UNMSM (MHN). At the beginning of the 20th century, Malcolm An...

In the Peruvian Amazon, we conducted an extensive survey of bird species in six secondary forests. We used the point count method and established 360 survey points (60 in each zone) at least 500 meters away from the others. These observations covered six zones across nine departments, including Loreto, Amazonas, San Martín, Ucayali, Huánuco, Pasco, Junín, Cusco, and Puno, at altitudes ranging from 96 to 2501 meters. We assessed these forests in both dry and rainy seasons with two consecutive days of observations at each point. Our findings revealed high species richness in every zone, with a total of 628 bird species identified, including one Endangered, and five Vulnerable according to the IUCN. Passeriformes was the order with the most species registered, while Tyrannidae and Thraupidae were the most species-rich families. Zones within protected areas exhibited higher species richne...

In the Peruvian Amazon, we conducted an extensive survey of bird species in six secondary forests. We used the point count method and established 360 survey points (60 in each zone) at least 500 meters away from the others. These observations covered six zones across nine departments, including Loreto, Amazonas, San Martín, Ucayali, Huánuco, Pasco, Junín, Cusco, and Puno, at altitudes ranging from 96 to 2501 meters. We assessed these forests in both dry and rainy seasons with two consecutive days of observations at each point. Our findings revealed high species richness in every zone, with a total of 628 bird species identified, including one Endangered, and five Vulnerable according to the IUCN. Passeriformes was the order with the most species registered, while Tyrannidae and Thraupidae were the most species-rich families. Zones within protected areas exhibited higher species richne...

The Puna ibis Plegadis ridgwayi, is a species of Threskiornithidae that inhabits Andean wetlands and makes altitudinal migrations to the coast. Data from us, GBIF, bibliographic information and the Neotropical Waterbird Census (1992 to 2015) show that this species occurs in Ecuador, Peru, Bolivia, Argentina, and Chile, with a core area in Peru and Bolivia. It is most abundant in the latter two countries, with seven and three localities with more than 1% of the biogeographic population, respectively. They are found from 0 to 5000 m altitude (with peaks at 3000 to 4500 m and 0 to 500 m). The highest incidence of records is in southern and central Peru. There are high values of environmental availability in part of the high Andean zone from Ecuador to northern Chile and northwestern Argentina, as well as the coast of central and northern Peru. The expansion of the distribution towards the P...

Se reporta el caso de una paciente mujer de 64 años con síndrome consuntivo y sangrado digestivo bajo. La anatomía patológica describe colon y recto con infiltración de células plasmáticas en la capa muscular. El manejo quirúrgico se realizó mediante resección anterior baja laparoscópica con colostomía terminal. El plasmocitoma primario de colon es una entidad clínica rara que constituye un reto para el patólogo y cirujano, pero su diagnóstico oportuno contribuye a un manejo temprano.