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Scanning Electron Microscopic Investigation of Catheters for Blood Access
Author(s) -
Bambauer R.,
Mestres P.,
Pirrung K.J.,
Sioshansi P.
Publication year - 1994
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.1525-1594.1994.tb02194.x
Subject(s) - scanning electron microscope , fibrin , biomedical engineering , materials science , silicone , electron microscope , chemistry , medicine , composite material , optics , immunology , physics
Large‐bore catheters for extracorporeal detoxification methods without and with treated surface with silver or silicone were investigated after removal with a scanning electron microscope and for bacterial colonization. In 42 large‐bore catheters of three different materials, small deposits of fibrin and protein on the inner and outer surface were seen. This second layer covered the entire surface after 3 days and increased to a thickness of 3 to 60 μm during the following days. Bacterial colonization was observed in 38.1%. In contrast to these results, the catheters with the treated outer surface showed a very low thrombogenecity and a low contamination rate of 6.7%.