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Red cell deformability, splenic function and anaemia in thalassaemia

By A. M. Dondorp, K. T. Chotivanich, S. Fucharoen, K. Silamut, J. Vreeken, P. A. Kager and N. J. White


Red cell deformability (RCD) was measured in 38 patients with alpha-thalassaemia and 48 patients with beta-thalassaemia, of whom 13 had undergone splenectomy. All splenectomized patients, but none of those with intact spleens, had very rigid erythrocytes with an elongation index <0.45 at a high shear stress of 30 Pa suggesting a splenic recognition threshold for removal of rigid red cells. At this shear stress RCD correlated strongly with the degree of anaemia in both the splenectomized (r = 0.81, P < 0.001) and non-splenectomized beta-thalassaemic patients (all patients r = 0.81, P < 0.001; homozygous beta-thalassaemic patients r = 0.51, P = 0. 01). These data suggest that reduced RCD is a major determinant of anaemia in thalassaemi

Year: 1999
DOI identifier: 10.1111/j.1365-2141.1999.01367.x
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Provided by: NARCIS
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