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Thursday, January 18, 2007

Artificial blood.



One of the great world-wide medical problems is the short supply of human blood (because the blood groups are not compatible, because the blood is more than 30 days of being collected, the possibility that it is infected or because the national or local services of blood collection lack the necessary efficiency). The Dr. Bruce Spiess of the Coommowealth University of Virginia, leader for many years, in the elaboration of artificial blood has been experimenting since many years with small inert particles of a special carrier of oxygen: perfluorhidrocarbons (PFCs). His commercial product : Oxycite (50 ml, containing PFCs), carries so much oxygen as 4 L of blood. The Oxycite has been experienced successfully in at least one dozen of affected humans of cerebral stroke, spinal insults and severe inflammations states that tend to contract or to diminish the light of little blood vessels, preventing an adequate oxygen tissue supply in vital areas.

Sangre artificial

Uno de los grandes problemas médicos mundiales lo constituye la escaséz de sangre humana (sea por que los grupos sanguineos no son compatibles, porque la sangre tiene más de 30 dias de antiguedad, la posibilidad de que esté infectada o porque los servicios nacionales o locales de colección sanguinea carecen de la eficiencia necesaria). El Dr. Bruce Spiess de la Universidad Coommowealth de Virginia, es lider desde hace muchos años, en la elaboración de sangre artificial. Experimentando con pequeñas particulas de un transportador especial de oxigeno : perfluorhidrocarbonados (PFCs) inertes, ha logrado que 50 ml de Oxycite (su producto commercial conteniendo PFCs), porte tanto oxigeno como 4 L de sangre. El Oxycite ha sido experimentado con éxito en por lo menos una docena de humanos afectados de injurias cerebrales, espinales o inflamaciones severas que tienden a contraer o disminuir la luz de los vasos sanguineos, impidiendo un aporte tisular de oxigeno adecuado.

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