Proximal Splenic Artery Embolization In Blunt Splenic Trauma

Proximal embolization of the splenic artery (PSAE) has recently been reported for traumatic splenic injury. The suggested mechanism of action entails a decrease in the splenic blood pressure without ischemia due to collateral blood supply. The main complications of selective embolization are continuous bleeding, splenic infarcts and splenic abscesses. The main complications of observation alone are continuous bleeding and formation of splenic pseudoaneurysms. Our aim was to assess the efficacy of PSAE in the cessation of bleeding without formation of pseudoaneurysms, and the outcome of the spleen after such intervention. A prospective observational study of all patients undergoing PSAE for traumatic splenic injury in our institution over a 33-month period. Clinical and Doppler sonographic examinations were performed to assess cessation of bleeding, splenic blood flow, and formation of splenic pseudoaneurysms, infarcts or abscesses. During 33 months, 11 patients with blunt abdominal trauma and tomographic evidence of either high grade or actively bleeding splenic injuries were treated by PSAE. During follow-up, no patient underwent surgery or repeated embolization. Preserved blood flow was found on Doppler sonography in 82% of the patients and no pseudoaneurysms were demonstrated. A perisplenic collection was found in one patient and responded well to percutaneous drainage. Proximal embolization of the splenic artery for severe splenic injury is highly successful in cessation of bleeding while preserving splenic architecture. There were minimal complications in this series demonstrated by clinical and Doppler examinations

Comparative study on hematological parameters of farmed matrinxã, Brycon amazonicus Spix and Agassiz, 1829 (Characidae: Bryconinae) with others Bryconinae species Estudo comparativo sobre parâmetros hematológicos de matrinxã Brycon amazonicus Spix e Agassiz, 1892(Characidae: Bryconinae) criados em cativeiro, com outras espécies de Bryconinae

The aim of this study was not only to determine the red blood cells parameters, thrombocyte and leukocyte counts in farmed Brycon amazonicus (matrinxã), to compare these parameters among Bryconinae species from literature, and also to investigate the presence of special granulocytic cells in these fish. The results of the blood cells parameters here established for farmed B. amazonicus, a species of great economic importance in Brazilian aquaculture, could help a better understanding of the blood features in natural populations of this Amazon species. Blood parameters varied between Bryconinae species investigated, mainly the red blood cell counts, hemoglobin, hematocrit and mean corpuscular volume (MCV). The presence of the blood granulocytes, neutrophils and heterophils in matrinxã suggest that both leukocytes can be a characteristic for Bryconinae family. Furthermore, it indicates that the existence of special granulocytic cells in the blood of Bryconinae species from literature is an artifact, and this was herein discussed.<br>O objetivo deste estudo foi determinar os parâmetros eritrocíticos, as contagens de trombócitos e de leucócitos de espécimes de Brycon amazonicus (matrinxã), criados em cativeiro e compará-los com aqueles descritos na literatura para outras espécies de Bryconinae. Além disso, foi ainda investigada a presença de células granulocíticas especiais nestes peixes. Os resultados dos parâmetros sangüíneos apresentados para B. amazonicus podem ajudar a entender melhor as características sangüíneas em população natural desta espécie de grande importância para a aqüicultura brasileira. Os parâmetros sangüíneos das espécies de Bryconinae investigadas apresentaram variação interespecíficas principalmente a contagem de eritrócitos, hemoglobina, hematócrito e volume corpuscular médio (VCM). A presença dos granulócitos sangüíneos, neutrófilos e heterófilos em matrinxã sugere que esta pode ser uma característica das espécies pertencentes à subfamília Bryconinae. Além disso, indica que a existência de células granulocíticas especiais no sangue de espécies de Bryconinae da literatura é um artefato, e isto foi aqui discutido