RESUMO
This experiment tested a self-contained blood grouping device under microgravity as well as the possibility that gravity could affect the blood grouping reaction. The experiment tested Rh, ABO, and Coombs-sensitized human erythrocytes against their appropriate antisera and diluents. A self-contained device was built which accomplished the agglutination and collected the agglutinates on filter paper. This was flown on the Columbia Space Shuttle on Jan. 12, 1986. The device produced blood agglutinates to several blood groups and the agglutinates were held on filter paper until returned to us by NASA as soon as practical after landing. Both the Rh test and Rh control systems failed because of crystallization within the tubing. The remaining three systems functioned as expected. After comparing these results to similar experiments conducted under full gravity, we conclude that ABO and Coombs-sensitized blood grouping tests do occur under micro-gravity, although the agglutinates formed may be smaller. The use of a closed system for clinical laboratory examination in space is demonstrated.
Assuntos
Tipagem e Reações Cruzadas Sanguíneas/métodos , Agregação Eritrocítica , Gravitação , Voo Espacial , Sistema ABO de Grupos Sanguíneos , Centrifugação , Teste de Coombs , HumanosAssuntos
Atenção à Saúde , Economia Médica , Economia Hospitalar , Hospitais Gerais , Maine , MortalidadeRESUMO
The clinical symptoms, laboratory findings, apexcardiograms, phonocardiograms and echocardiographic features are related to hemdoynamic and angiocardiographic measurements in 9 patients with atrial myxoma (6 left atrial and 3 right atrial tumors). Emphasis is placed on the clinical clues to the diagnosis. Echocardiography has become the most useful non-invasive method of investigation. However, angiocardiography remains the definitive diagnostic procedure.
