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Laboringenieur im Bereich Herzklappen

• Entwicklung, Konstruktion und Betreuung der Prüfstände im Laborbereich Herzklappen
• Software-Entwicklung (National-Instruments LabView) zur Steuerung der Prüfstände und Messwertaufnahme
• Mit verantwortlich für den Webauftritt des Lehrstuhls für Angewandte Medizintechnik AME

Ansrechpartner für folgende Projekte:

• Kreislaufsimulation
• Hämodynamik von Herzklappenprothesen
• Dauertest und Festigkeitsuntersuchungen an Herzklappenprothesen
• Kavitation an mechanischen Herzklappenprothesen
• Kinematische Studien an Herzklappenprothesen und Blutpumpen
• In vitro Kalzifizierung biologischer Herzklappenprothesen

• Bach DS, Schmitz C, Dohmen G, Aaronson KD, Steinseifer U, Kleine P.
  In vitro assessment of prosthesis type and pressure recovery characteristics: Doppler echocardiography overestimation of bileaflet mechanical and bioprosthetic aortic valve gradients.
  J Thorac Cardiovasc Surg. 2012 Jan 18. [Epub ahead of print]
• Kaufmann TA, Linde T, Cuenca-Navalon E, Schmitz C, Hormes M, Schmitz-Rode T, Steinseifer U.
  ITransient, Three-Dimensional Flow Field Simulation through a Mechanical, Trileaflet Heart Valve Prosthesis.
  ASAIO J. 2011 Jun 2. [Epub ahead of print]
• Dohmen G, Schmitz C, Steinseifer U, Hatam N, Hilgers RD, Autschbach R, Spillner J.
  Influence of Aortic Dimensions on the Hemodynamic Performance of Small Aortic Valve Prostheses: Impact on Patient/Prosthesis Mismatch.
  Thorac Cardiovasc Surg. 2011 May 3. [Epub ahead of print]
• Dzemali O, Bakhtiary F, Steinseiffer U, Schmitz C, Glasmacher B, Moritz A, Kleine P.
  Impact of valve calcification on systolic and diastolic valvular function--an in vitro model.
  Eur J Cardiothorac Surg. 2008 Nov;34(5):960-3. Epub 2008 Sep 6
• Bakhtiary F, Dzemali O, Steinseiffer U, Schmitz C, Glasmacher B, Moritz A, Kleine P.
  Hydrodynamic comparison of biological prostheses during progressive valve calcification in a simulated exercise situation. An in vitro study.
  Eur J Cardiothorac Surg. 2008 Nov;34(5):960-3. Epub 2008 Sep 6
• Dzemali O, Bakhtiari F, Steinseiffer U, Schmitz C, Glasmacher B, Moritz A, Kleine P
  Hemodynamic performance of fresh and calcified aortic valve prostheses in critical low stroke volume.
  J Heart Valve Dis. 2008 May;17(3):317-24.
• Bakhtiari F, Dzemali O, Steinseiffer U, Schmitz C, Glasmacher B, Moritz A, Kleine P
  Opening and closing kinematics of fresh and calcified aortic valve prostheses: an in vitro study.
  J Thorac Cardiovasc Surg. 2007 Sep;134(3):657-62.
• Yokoyama Y, Medart D, Hormes M, Schmitz C, Hamilton K, Kwant PB, Takatani S, Schmitz-Rode T, Steinseifer U
  CFD simulation of a novel bileaflet mechanical heart valve prosthesis: an estimation of the Venturi passage formed by the leaflets.
  Int J Artif Organs. 2006 Dec;29(12):1132-9.
• Graeter TP, Fries R, Aicher D, Reul H, Schmitz C, Schäfers HJ
  In-vitro comparison of aortic valve hemodynamics between aortic root remodeling and aortic valve reimplantation.
  J Heart Valve Dis. 2006 May;15(3):329-35.
• Fries R, Graeter T, Aicher D, Reul H, Schmitz C, Böhm M, Schäfers HJ
  In vitro comparison of aortic valve movement after valve-preserving aortic replacement.
  J Thorac Cardiovasc Surg. 2006 Jul;132(1):32-7.
• D. Medart, C. Schmitz, T. Schmitz-Rode, U. Steinseifer, Aachen, Germany
  In vitro performance of the novel HIA polymeric bileaflet heart valve prosthesis
  Biomedizinische Technik, Volume 50, Supplementary vol. 1, 2005.
• Medart D, Schmitz C, Rau G, Reul H.
  Design and in vitro performance of a novel bileaflet mechanical heart valve prosthesis.
  Int J Artif Organs. 2005 Mar;28(3):256-63.
• G Dohmen, C Schmitz, G Langebartels, H Reul, R Autschbach
  Significant overestimation of transvalvular gradients in bileaflet mechanical heart valves by clinical-routine Doppler-echocardiography
  Thorac cardiovasc Surg 2005;
• Reul H, Schmitz C, Pfaff EM, Hohlstein C, Schmidt PA, Rau G, Arru P.
  In-vitro assessment of the wear development mechanism and stabilization of wear in the Edwards MIRA/Sorin Bicarbon mechanical heart valve orifice ring.
  J Heart Valve Dis. 2002 May;11(3):409-18; discussion 418.
• Klues HG, Schwarz ER, vom Dahl J, Reffelmann T, Reul H, Potthast K, Schmitz C, Minartz J, Krebs W, Hanrath P.
  Disturbed intracoronary hemodynamics in myocardial bridging: early normalization by intracoronary stent placement.
  Circulation. 1997 Nov 4;96(9):2905-13.
• Reul H, Eichler M, Potthast K, Schmitz C, Rau G.
  In vitro testing of heart valve wear outside of the manufacturers laboratory--requirements and controversies.
  J Heart Valve Dis. 1996 Jun;5 Suppl 1:S97-103; discussion 103-4.
• Reul H, van Son JA, Steinseifer U, Schmitz B, Schmidt A, Schmitz C, Rau G.
  In vitro comparison of bileaflet aortic heart valve prostheses. St. Jude Medical, CarboMedics, modified Edwards-Duromedics, and Sorin-Bicarbon valves.
  J Thorac Cardiovasc Surg. 1993 Sep;106(3):412-20.
• Van Son JA, Reul H, Steinseifer U, Schmitz B, Schmid A, Schmitz C, Rau G.
  Systolic sequential flow velocity profiles in four currently used bileaflet heart valve prostheses.
  Eur J Cardiothorac Surg. 1993;7(2):107-8.