What are the clinical consequences of excessive cell-free plasma Hb levels in paroxysmal nocturnal hemoglobinuria (PNH)?

Updated: May 20, 2021
  • Author: Emmanuel C Besa, MD; Chief Editor: Sara J Grethlein, MD, FACP  more...
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Answer

Thus, the clinical consequences of excessive cell-free plasma Hb levels during intravascular hemolysis or the administration of Hb preparations include dystonias involving the gastrointestinal, cardiovascular, pulmonary, and urogenital systems, as well as clotting disorders. Many of the clinical sequelae of intravascular hemolysis in a prototypic hemolytic disease, PNH, are readily explained by Hb-mediated NO scavenging.


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