[Transfusion-associated lung injury (TRALI): obvious and incomprehensible]

A Iu Bulanov
Anesteziologiia i Reanimatologiia 2009, (5): 48-52
Acute transfusion-associated lung injury (TRALI) is an acute lung injury associated with and develops within 6 hours after the transfusion of components and blood preparations. Today there are no uniform views on the pathogenesis of TRALI. The discussion of immune and non-immune mechanisms is relevant. The key link of the former is that the presence of anti-leukocytic antibodies in a donor or a recipient and their interaction during transfusion with the leukocytes of the recipient or the donor, respectively; that of the latter link is the accumulation of biologically active substances in the transfusion media during storage and their passive administration to the recipient during transfusion. In both cases, the total link is drastic increased pulmonary capillary permeability. The clinical presentation of TRALI is nonspecific and generally similar to that of the adult respiratory distress syndrome and lung injuries of another genesis. It is necessary to make its differential diagnosis with allergic reactions, the transfusion of bacterially contaminated media and mainly with circulatory overload. Specific treatments for transfusion-associated lung injury are unavailable. Diferent variants of respiratory therapy are effective. Prevention of TRALI is mainly based on its immune mechanism. The leading direction of its prevention is to select donors.

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