[Multiprofessional demand and clientele: influences and challenges for a Master's degree course in educational technology in the health sciences]. / Demanda e clientela multiprofissional: influências e desafios para um Mestrado em Tecnologia Educacional nas Ciências da Saúde.

This article aims to identify the key characteristics of individuals pursuing a Master's degree in Health Education, discussing relevant issues concerning the objectives and content of their training. The analysis is based on data for Master's applicants selected during the four years since the program on Educational Technology in Health Sciences was created by the Unit of Educational Technology in Health, under the Health Sciences Center at the Federal University of Rio de Janeiro. The study showed that the applicants came from various professions and belonged to both teaching faculty and health care teams. The profile identified by the study has provided the material for discussing key aspects related to the Master's course characteristics and the challenges involved in achieving its social role and meeting the clientele's needs.

[Internal carotid bilateral occlusion, meningovascular syphilis and AIDS: case report]. / Oclusão bilateral das artérias carótidas internas, sífilis meningovascular e SIDA. Relato de caso.

We report a case of bilateral occlusion of internal carotid arteries, presenting with right hemiparesis and hypoesthesia, associated to meningovascular syphilis in a patient with AIDS. CT scan showed few small hypodense lesions, with a predominance on the left side, and the angiography showed bilateral occlusion of the carotid arteries. The association between syphilis and AIDS is not unusual, but the paucity of symptoms, probably due to a slow and gradual occlusion is not commonly reported.

[Influence of static flow (CREEP) on amalgam hardness. Effect of alloys and measured areas]. / Influência do escoamento estático (CREEP) na dureza do amálgama. Efeito de ligas e regióes de medida.

The authors studied the CREEP of 5 amalgam alloys (1 conventional and 4 with high cooper) by the application os static load of 36 MPa in 478 mm specimens, 7 days old. After CREEP test, the samples were included in acrylic resin and Vickers hardness determined by three penetrations for each portion (cervical, medium and occlusal). Samples not submitted to the creep test was used with control. They concluded that no statistic difference was found in creep test but in Vickers test all the studied materials showed different hardness averages. The load application to samples increased the hardness of all the studied materials.

[Influence of different bonding agents on traction resistance of metal alloys to dentin]. / Influência de diferentes agentes de fixação na resistência de união, por tração, de ligas metálicas fixadas à dentina.

They were casted pieces using three kinds of alloy (Ni-Cr, Ag-Sn and Cu-Al) with circular and smooth surface. They were cemented to human teeth, on occlusal surface, grounded at dentin level, through three different materials kind (zinc polycarboxylate cement, glassionomer cement and composite). After 24 hours storing, the samples were subjected to the tensile test. The results showed that the samples cemented with composite and the casts made with Ag-Sn alloy had higher bond strength.

[Penetration of calcium hydroxide based cements by dental enamel conditioning acids]. / Estudo da penetração de agentes ácidos para o condicionamento do esmalte dental em cimentos à base de hidróxido de cálcio.

It was verified the penetration of phosphoric acid into 3 commercial calcium hydroxide-based cements (Life, Renew and Prisma VLC Dycal). The colorimetric method employed permitted the identidication of phosphorus amount in representative samples of 6 successive layers 0.1 mm thick of each material. The acid etching used were the commercial products Scotchbond Etching Gel--3M at 36.114% by weight and Solução Condicionadora--Johnson & Johnson at 36.054% by weight. The contact time was 60 seconds. The result showed that layers 0.1 mm tick for Life and Prisma VLC Dycal and 0.2 mm thick for Renew were able to block the penetration of phosphoric acid solution whereas layers 0.1 mm thick for the 3 cements were able to block the penetration of phosphoric acid gel.

[Mitral valve prolapse as a probable cause of cerebral ischemia. A case report]. / Prolapso da valva mitral como provável etiologia de isquemia cerebral. Relato de caso.

A 32 year old female patient, documented clinically and echocardiographically to have a competent prolapse of the mitral valve (MVP), developed a sudden ischemic cerebrovascular accident (CVA), suggestive of embolism. There were no predisposing factors to cerebrovascular disease, except for past use of contraceptive pills. Tomographic study disclosed an ischemic right-parietal "wedge-shaped" defect. The patients's recovery, with physiotherapy and AAS, was satisfactory. The authors discuss the association of MVP and CVA, considering physiopathogenic, prophylactic and therapeutic aspects, emphasizing the need to consider MVP as a cause of CVA in young adults.

Complicacoes toracicas na cirurgia cardiaca. / Thoracic complications in cardiac surgery

Os autores analisam as complicacoes toracicas ocorridas em 610 cirurgias cardiacas consecutivas nos ultimos tres anos. Houve 11% de complicacoes toracicas, sendo 50% dessas complicacoes de infeccao respiratoria.Resultaram em obito 7,3% das complicacoes, a maioria por pulmao umido. Chamam a atencao para as vantagens da integracao de um servico de cirurgia cardiaca toracica e de pneumologia. Analisam a importancia da hemodiluicao, do filtro, do went, do PPE, do controle da volemia e fisioterapia, entre outras medidas, na prevencao das mais graves complicacoes pos-operatorias.Embora as infeccoes respiratorias fossem muito frequentes, todas foram curadas pelo tratamento clinico. Finalmente apontam os piores casos para a cirurgia: os portadores de hipertensao pulmonar cronica