- ARTERY 17 Poster Presentation abstracts
- Open access
- Published:
P125: Use of Vascular Adaptation in Response to Mechanical Loading Facilitates Personalisation of A One-Dimensional Pulse Wave Propagation Model
Artery Research volume 20, pages 79–80 (2017)
Abstract
Background
Mathematical modelling of pressure and flow waveforms in blood vessels using pulse wave propagation (PWP) models could support clinical decision-making. For a personalised model outcome, measurements of all modelled vessel radii and wall thicknesses are required. In clinical practice, however, datasets are often incomplete. To overcome this problem, we hypothesised that the adaptive capacity of blood vessels in response to mechanical load can be utilised to fill in the gaps of incomplete patient-specific datasets.
Methods
We implemented homeostatic feedback loops in a validated PWP model [1] to allow adaptation of vessel geometry to maintain wall stress and wall shear stress. To evaluate our approach, we utilised complete datasets of 10 patients scheduled for vascular access surgery. Datasets comprised of wall thicknesses and radii of 7 central and 11 arm arterial segments. We simulated reference models (RefModel, n = 10) using complete data and adapted models (AdaptModel, n = 10) using data of one brachial artery segment only. The remaining AdaptModel geometries were estimated using adaptation. In both models, mean brachial pressure, brachial artery distensibility, heart rate and aortic inflow were prescribed. We evaluated agreement between RefModel and AdaptModel geometries, as well as between pressure and flow waveforms of both models.
Results
Limits of agreement (bias ± 1.96SD) between AdaptModel and RefModel radii and wall thicknesses were 0.029 ± 1.3mm and 28 ± 230µm, respectively. AdaptModel pressure and flow waveform characteristics across the proximal-to-distal arterial domain were within the uncertainty bounds of the RefModel (Fig. 1).
Conclusions
Our adaptation-based PWP model enables personalisation even when not all required data is available.
References
Kroon, W., Huberts, W., Bosboom, M., & van de Vosse, F. (2012). A numerical method of reduced complexity for simulating vascular hemody-namics using coupled 0D lumped and 1D wave propagation models. Computational and mathematical methods in medicine, 2012.
Author information
Authors and Affiliations
Rights and permissions
This is an open access article distributed under the CC BY-NC license https://doi.org/creativecommons.org/licenses/by/4.0/.
About this article
Cite this article
Heusinkveld, M., Reesink, K., Arts, T. et al. P125: Use of Vascular Adaptation in Response to Mechanical Loading Facilitates Personalisation of A One-Dimensional Pulse Wave Propagation Model. Artery Res 20, 79–80 (2017). https://doi.org/10.1016/j.artres.2017.10.107
Published:
Issue Date:
DOI: https://doi.org/10.1016/j.artres.2017.10.107