Bacterial adherence to graft tissues in static and flow conditions

Tiago Rafael Veloso, Jorien Claes, Soetkin Van Kerckhoven, Bartosz Ditkowski, Luis G. Hurtado-Aguilar, Stefan Jockenhoevel, Petra Mela, Ramadan Jashari, Marc Gewillig, Marc F. Hoylaerts, Bart Meyns, Ruth Heying*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

22 Citations (Web of Science)

Abstract

Various conduits and stent-mounted valves are used as pulmonary valve graft tissues for right ventricular outflow tract reconstruction with good hemodynamic results. Valve replacement carries an increased risk of infective endocarditis (IE). Recent observations have increased awareness of the risk of IE after transcatheter implantation of a stent-mounted bovine jugular vein valve. This study focused on the susceptibility of graft tissue surfaces to bacterial adherence as a potential risk factor for subsequent IE.Adhesion of Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus sanguinis to bovine pericardium (BP) patch, bovine jugular vein (BJV), and cryopreserved homograft (CH) tissues was quantified under static and shear stress conditions. Microscopic analysis and histology were performed to evaluate bacterial adhesion to matrix components.In general, similar bacteria numbers were recovered from CH and BJV tissue surfaces for all strains, especially in flow conditions. Static bacterial adhesion to the CH wall was lower for S sanguinis adhesion (P?
Original languageEnglish
Pages (from-to)325-332
JournalJournal of Thoracic and Cardiovascular Surgery
Volume155
Issue number1
DOIs
Publication statusPublished - Jan 2018

Keywords

  • congenital heart disease
  • congenital heart disease surgery
  • endocarditis
  • prosthetic heart valve
  • valved conduit

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