Biomedical Engineering / Biomedizinische Technik

Journal: Biomedical Engineering / Biomedizinische Technik

Abbreviation

Eng.-Biomed. Tech.

Publisher

De Gruyter

ISSN

0013-5585
1862-278X

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Publications 1 - 10 of 45

The impact of right ventricular hemodynamics on the performance of a left ventricular assist device in a numerical simulation model
Thut, Titus L.Z.; Petrou, Anastasios; Meboldt, Mirko; et al. (2023)
Biomedical Engineering / Biomedizinische Technik
Objectives Left ventricular assist devices (LVADs) have been established as alternative to heart transplantation for patients with end-stage heart failure refractory to medical therapy. Right heart failure (RHF) after LVAD implantation is associated with inferior outcome. Its preoperative anticipation may influence the selection between a pure left ventricular and a biventricular device type and, thus, improve outcomes. Reliable algorithms to predict RHF are missing. Methods A numerical model was used for simulation of a cardiovascular circulation. The LVAD was placed as parallel circuit between left ventricle and aorta. In contrast to other studies, the dynamic hydraulic behavior of a pulsatile LVAD was replaced by that of a continuous LVAD. A variety of hemodynamic states was tested mimicking different right heart conditions. Adjustable parameters included heart rate (HR), pulmonary vascular resistance (PVR), tricuspid regurgitation (TR), right ventricular contractility (RVC) and pump speed. Outcome parameters comprised central venous pressure (CVP), mean pulmonary artery pressure (mPAP), cardiac output (CO) and occurrence of suction. Results Alteration of HR, PVR, TR, RVC and pump speed resulted in diverse effects on CO, CVP and mPAP, resulting in improvement, impairment or no change of the circulation, depending on the degree of alteration. Conclusions The numerical simulation model allows prediction of circulatory changes and LVAD behaviour following variation of hemodynamic parameters. Such a prediction may be of particular advantage to anticipate RHF after LVAD implantation. It may help preoperatively to choose the appropriate strategy of only left ventricular or both left and right ventricular support.
Post-processing technique for improved assessment of hard tissues in the submicrometer domain using local synchrotron radiation-based computed tomography
Schneider, Philipp; Voide, Romain; Stampanoni, Marco; et al. (2009)
Biomedical Engineering / Biomedizinische Technik
A simple video-based system for examining irregularities in very slow, smooth-pursuit eye movements in cancer patients
Menozzi, Marino; Rhyner, Kaspar; Joestl, Alena; et al. (2008)
Biomedical Engineering / Biomedizinische Technik
Die Rolle von Bewegungsparallaxe und Stereopsis für die Tiefenwahrnehmung an Stereobildschirmen
Bäumle, B.; Von Buol, A.; Menozzi, M. (1996)
Biomedical Engineering / Biomedizinische Technik
Performance Evaluation of a Treatment Couch used for Tumor Tracking
Jöhl, Alexander; Stäuble, Markus; Monn, Marcial; et al. (2016)
Biomedical Engineering / Biomedizinische Technik
Inverse finite element characterization of the human myometrium derived from uniaxial compression experiments
Weiss, Stephan; Niederer, Peter; Nava, Alessandro; et al. (2008)
Biomedical Engineering / Biomedizinische Technik
Femoral stiffness and strength critically depend on loading angle
Voide, Romain; van Lenthe, G. Harry; Müller, Ralph (2008)
Biomedical Engineering / Biomedizinische Technik
Quantifizierung von Gesichtsasymmetrien
Stüssi, E.; Handschin, S.; Frey, M. (1992)
Biomedical Engineering / Biomedizinische Technik
Influence of Calcium Phosphates on the Degradation of Poly Lactic Acid for Medical Implants
Ruffieux, K.; Dell'Agosti, A.; Riesen, B.; et al. (1996)
Biomedical Engineering / Biomedizinische Technik
Röntgentransparentes chirurgisches Instrument aus kohlenstoffaserverstärktem Thermoplast
Semadeni, M.; Zerlik, H.; Brandsberg, T.; et al. (1995)
Biomedical Engineering / Biomedizinische Technik

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Journal: Biomedical Engineering / Biomedizinische Technik

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