Transfuziile cresc riscul de infarct
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Transfuziile de sânge efectuate în timpul operaţiilor cresc riscul de deces prin infarct miocardic, atac vascular cerebral sau prin boli grave precum penumonia şi cancerul, potrivit specialiştilor de la Universitatea „Kentucky” din SUA. Aceasta nu din cauză că sângele ar fi contaminat cu virusuri sau cu bacterii, susţin medicii americani, ci pentru că, în loc să întărească imunitatea, are efectul contrar. O altă explicaţie oferită de aceştia este că, pe durata depozitării în spitale, sângele suferă schimbări care pot declanşa inflamaţii la nivelul pereţilor vasculari. Studiul a fost realizat pe 125.000 de persoane care au suferit intervenţii chirurgicale.
