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Consequences Arising From Elevated Surface Temperatures on Human Blood
Author(s) -
Hamilton Kathrin F.,
Schmidt Verena I.,
Mager Ilona,
SchmitzRode Thomas,
Steinseifer Ulrich
Publication year - 2010
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.2010.01089.x
Subject(s) - human blood , adhesion , drop (telecommunication) , materials science , platelet adhesion , platelet , coagulation , chemistry , composite material , biomedical engineering , analytical chemistry (journal) , metallurgy , chromatography , medicine , immunology , mechanical engineering , physiology , engineering
Heat in blood pumps is generated by losses of the electrical motor and bearings. In the presented study the influence of tempered surfaces on bulk blood and adhesions on these surfaces was examined. Titanium alloy housing dummies were immersed in 25 mL heparinized human blood. The dummies were constantly tempered at specific temperatures (37–45°C) over 15 min. Blood samples were withdrawn for blood parameter analysis and the determination of the plasmatic coagulation cascade. The quantities of adhesion on surfaces were determined by drained weight. Blood parameters do not alter significantly up to surface temperatures of 45°C. In comparison to the control specimen, a drop in the platelet count can be observed, but is not significantly temperature dependent. The mean mass of adhesions at 41°C increased up to 66% compared to 37°C. Thus, heat generated in electrical motors and contact bearings may influence the amount of adhesions on surfaces.