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BACKGROUND An atypical form of life-threatening hemolytic transfusion reaction (HTR) in patients with sickle cell disease (SCD) has been well described in the literature. Continuation of blood transfusion may be lethal, as it can further exacerbate hemolysis. The pathophysiologic mechanism of HTR is not well understood. CASE REPORTS Two cases of severe(More)
Delayed haemolytic transfusion reactions (DHTRs) are seen more frequently in patients with sickle cell disease (SCD) than in other groups of patients, and are characterised by a positive direct antiglobulin test and the appearance of previously undetected red blood cell (RBC) alloantibodies in the patient's serum. Recently a syndrome of post-transfusion(More)
BACKGROUND AND METHODS From 1996 through 2006, 195 cases were reported as transfusion-related acute lung injury (TRALI) to the Serious Hazards of Transfusion scheme and from 1999 onward classified by probability, using clinical features and HLA and/or HNA typing. From late 2003, the National Blood Service provided 80 to 90 percent of fresh-frozen plasma(More)
The red cell alloantibody, anti-U, is uncommon but is a recognised cause of haemolytic disease of the fetus and newborn. We describe six pregnancies complicated by the presence of maternal anti-U, and review nine other well-documented cases. In these 15 cases severe haemolytic disease occurred only with titres of > or = 1/512, and titres as high as 1/4000(More)
Although passive infusion of plasma-rich components containing white blood cell (WBC) antibodies are responsible for majority of the reported transfusion-related acute lung injury (TRALI) cases, the minimum volume of residual plasma, which might trigger TRALI, is not known. We report three cases of TRALI where the implicated donor component contained(More)
BACKGROUND Hyperhemolysis syndrome (HS) has been well described both in sickle cell disease (SCD) and non-SCD patients. The pathogenesis remains unclear. The possible mechanisms include bystander hemolysis, suppression of erythropoiesis, and destruction of red cells (RBCs) due to contact lysis via activated macrophages. CASE REPORT This study reports a(More)
Hyperhaemolysis syndrome (HS), a syndrome in which there is destruction of both donor and recipient red cells after transfusion, is well recognised in patients with sickle cell disease and beta-thalassaemia. It has also been reported in a patient with myelofibrosis. In acute forms of HS, evidence of red cell antibody-mediated haemolysis is lacking, and it(More)
Rapid nongenomic in vitro effects of aldosterone have been demonstrated recently in cultured vascular smooth muscle and endothelial cells. But there is, as yet, little evidence for corresponding in vivo effects. The present study thus investigates the rapid nongenomic effects of aldosterone on human cardiovascular function. In a double-blind(More)