Search PubMed⌕ Search

Biomedical subjects

E Rivera

Publications and source records attributed to E Rivera.

121 records · Page 7Linked to original sources
PubMedDate not supplied

Spanish validation of the Syndrom Kurztest (SKT).

There is an urgent need in multinational studies for efficient and sensitive tests for the evaluation of dementias. These tests are used to investigate the regional characteristics of dementias, providing possible insight into the different etiologies of the disorders. These tests are also utilized to assess the outcome of treatment interventions at multinational levels. We validated and standardized the Syndrom Kurztest, a brief European neuropsychological test, in a population of elderly Chileans, possessing high levels of illiteracy. In our sample, the SKT was found to be an effective instrument for the diagnosis of dementias, and for differentiating mild-moderate from severe degrees of the disease. There was a good correlation between the scores on the SKT and the age of the participants, but the gender and the years of schooling had no effect. The test is a useful contribution to the study of dementias, found in the aging developing world, particularly because it can be used in illiterate populations.

Aged↗
PubMedDate not supplied

MR angiography of the portal venous system: techniques, interpretation, and clinical applications.

Magnetic resonance (MR) angiography is a noninvasive means of assessing the portal venous system that has potential advantages over currently used modalities. Time-of-flight and phase-contrast MR angiography are useful techniques that differ fundamentally in their means of data acquisition but are comparable in their ability to demonstrate normal anatomy as well as abnormalities of the portal venous system. Occasionally, artifacts caused by respiratory motion, implanted metallic devices or surgical clips, in-plane saturation, or areas of complex flow are seen at MR angiography of the portal venous system. However, most artifacts can easily be identified as such and either remedied or ignored. In addition, the suppression of signal from surrounding soft tissues may result in poor detection of parenchymal lesions. The utility of standard projection angiograms and source images can be increased through the use of intravenously administered contrast material and postprocessing techniques such as partial-volume maximum intensity projection reconstructions and shaded surface renderings. In addition to providing information on portal venous anatomy and portosystemic collateral vessels, MR angiography of the portal vein has clinical application in portal venous thrombosis and stenosis, liver transplantation, and the evaluation and planning of surgical and transjugular intrahepatic portosystemic shunts.

Algorithms↗
PubMedDate not supplied

A bovine viral diarrhoea/mucosal disease-like syndrome in moose (Alces alces): investigations on the central nervous system.

A disease of unknown aetiology has been observed in moose. The animals showed signs of a bovine viral diarrhoea/mucosal disease-like syndrome, and central nervous disturbances. Brains from adult female moose were investigated by means of histology, immunohistochemistry, electron microscopy, virology, and bacteriology. The results indicate that the nervous signs were not associated with a spongiform encephalopathy. The lesions suggest a viral aetiology, although all the virological investigations have so far proved negative.

Animals↗
PubMedDate not supplied

Immunity to Mexican H5N2 avian influenza viruses induced by a fowl pox-H5 recombinant.

The presence of highly pathogenic H5N2 avian influenza in domestic poultry in Mexico that is not being eradicated by conventional depopulation methods constitutes an imminent problem for poultry producers and agricultural authorities in the United States. The present report considers the candidate vaccines available to H5N2 influenza virus and establishes that a fowl pox-H5 recombinant can provide protection from lethal Mexican H5N2, and prevent shedding in the feces and transmission to contact birds. Inactivated and recombinant vaccines may be useful adjuncts to eradication if the H5N2 influenza virus spreads to the United States or the countries in Central America.

Animals↗
PubMedDate not supplied

[Endocarditis due to an alga of the genus Prototheca sp. A saprophyte of water and of tree sap?].

We report a case of a preterm neonate with very low birth weight (775 grs), He stayed 77 days in a neonatal care unit due to respiratory distress syndrome, with respiratory support for 27 days, and complications in gastrointestinal and nervous systems. In a structural normal heart, he developed infective endocarditis that was treated with good bacteriologic results. An echocardiogram showed the persistence of a mass in the right atrium, the mass was a thrombus and it was resected. Histopathological analysis and cultures of the thrombus reported Prototheca sp. that is an algae. The patient received medical treatment with amphothericin B with satisfactory clinical evolution. He is doing well 6 months later. This is the first report of literature of an algae causing endocarditis.

Amphotericin B↗