Blood transfusions leading to apparent hemoglobin C, S, and O-Arab hemoglobinopathies.

CONTEXT: Apparent hemoglobinopathies caused by blood transfusions rarely have been reported in the scientific literature. OBJECTIVE: To interpret the abnormal hemoglobins appearing as small peaks on hemoglobin chromatograms or electrophoresis membranes. DESIGN: In the clinical laboratories of a university hospital and a metropolitan hospital affiliated with a medical school, we interpreted hemoglobin chromatograms and electrophoresis membranes; correlated them with patients' medical, laboratory, and transfusion records; and when possible, identified the abnormal hemoglobin in the donors' transfusion segments. RESULTS: We detected 52 incidences of apparent hemoglobinopathies in 32 recipients caused by blood transfusion, of which 46 were hemoglobin C, 4 were hemoglobin S, and 2 were hemoglobin O-Arab. When first detected, the abnormal hemoglobins in recipients ranged from 0.8% to 14% (median, 5.6%). Multiple transfusions with abnormal hemoglobins occurred in 11 patients with 2 patients receiving hemoglobin C blood 5 separate times. One patient received hemoglobin C and later S, and another patient received C and later O-Arab. CONCLUSIONS: Apparent hemoglobinopathies caused by blood transfusions are far more common than previously reported and represent diagnostic challenges. Misdiagnosis could lead to unnecessary testing, treatment, and counseling. If a hemoglobinopathy from a unit of transfused blood is identified in a recipient, we recommend notifying the donor of that abnormality.

Inferferência da malária na fisiologia e na fiosiopatologia do eritrócito: parte 3: relaçäo com deficiência de G6PD, talassemias e outros aspectos hereditários do eritrócito / Malaria interference of physiologic and physiopathology of erythrocyte: part 3: relation of G6PD deficiency, thalassemis and other hereditary aspects of erythrocyte

Os autores enfocam os aspectos fisiológicos e fisiopatológicos do eritrócito que se relacionam com a malária. Esta revisäo visa compreender a açäo seletiva da malária sobre as doenças hereditárias do glóbulo vermelho (anemia falciforme e hemoglobinopatias associadas, talassemias, deficiência de glicose-6-fosfato desidrogenase, ovalocitose hereditária) e do sistema Duffy, focalizando a discussäo nos aspectos associados ao ciclo evolutivo do parasita no inseto e no homem. Descrevem a fisiopatologia da deficiência de G6PD, talassemias, hemoglobinopatias C e E ovalocitose, sistema Duffy e as inter-relações com a malária

Hemoglobin C acquired via a blood transfusion. Detection by automated blood counter.

Hemoglobin C was acquired by a 52-year-old man via a blood transfusion. The presence of nonlysis of erythrocytes on the Technicon H6000 (Tarrytown, NY) scattergram after blood transfusions and the absence of this process in the admission peripheral blood count confirmed that this abnormal hemoglobin was acquired and not endogenous to the patient. Homozygous hemoglobin C disease was confirmed in one of the donors of blood received by the patient.

[Case contribution to the study of hemoglobin C disease]. / Kasuistischer Beitrag zur Kenntnis der Hämoglobin-C-Krankheit.

Haemoglobin-C disease represents a haemoglobinopathy seldom occurring in our latitudes. In its homocygotic form it coincides with haemolytic anaemia and splenomegaly. The diagnosis of haemoglobin-C disease could be ensured in a 33 years old Yugoslav patient who had been treated because of being suspected of a venous thrombosis of the spleen. The knowledge of this disease taking prognostically a benign course seems to be important in order to prevent patients from unnescessary diagnostic and therapeutic measures.