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Article type: Research Article
Authors: Gustavsson, Carl G. | Persson, Sylvi U. | Larsson, Hans | Persson, Stig | Thorvinger, Björn O. S.
Affiliations: Department of Cardiology, University Hospital, S-22185 Lund, Sweden | Department of Internal Medicine, Central Hospital, S-35185 Växjö, Sweden | Department of Diagnostic Radiology, University Hospital, S-22185 Lund, Sweden
Abstract: The effects of coronary angiography with iohexol upon vein blood rheology were studied before, immediately after and one month after angiography. Haematocrit decreased from 40.5% to 39.0% immediately after angiography (p < 0.01). When this was compensated for by in vitro standardisation of sample haematocrits to 45% there was a blood viscosity increase by 10.9 – 15.0%, at the four studied shear rates 0.8 s−1, 2.3 s−1, 19.6 s−1, and 40.0 s−1 (p < 0.05 – p < 0.01). In unadjusted samples, i.e. at the patients natural haematocrits, there was only a slight and statistically non-significant blood viscosity increase. Plasma viscosity decreased immediately after angiography, and was even lower 1 month after angiography. The haematocrit reduction correlated significantly with the iohexol doses (correlation coefficient −0.852, p < 0.001), whereas no significant correlation was found between the contrast volumes and the alterations of blood and plasma viscosity. Except for plasma viscosity, there were no significant differences when the values before angiography and one month later were compared.
Keywords: blood viscosity, contrast media, iohexol, coronary angiography, haematocrit, haemorheology
DOI: 10.3233/CH-1996-16601
Journal: Clinical Hemorheology and Microcirculation, vol. 16, no. 6, pp. 737-743, 1996
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