The influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations
Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutio...
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| Autor*in: |
Zupančič Valant, Andreja [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2011 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag 2011 |
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| Übergeordnetes Werk: |
Enthalten in: Rheologica acta - Springer-Verlag, 1961, 50(2011), 4 vom: 22. Jan., Seite 389-402 |
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| Übergeordnetes Werk: |
volume:50 ; year:2011 ; number:4 ; day:22 ; month:01 ; pages:389-402 |
| Links: |
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| DOI / URN: |
10.1007/s00397-010-0518-x |
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OLC2056013886 |
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| 245 | 1 | 0 | |a The influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations |
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| 520 | |a Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. | ||
| 650 | 4 | |a Hemorheology | |
| 650 | 4 | |a Blood | |
| 650 | 4 | |a Volume expanders | |
| 650 | 4 | |a Herschel–Bulkley model | |
| 650 | 4 | |a Hemodynamics | |
| 700 | 1 | |a Žiberna, Lovro |4 aut | |
| 700 | 1 | |a Papaharilaou, Yannis |4 aut | |
| 700 | 1 | |a Anayiotos, Andreas |4 aut | |
| 700 | 1 | |a Georgiou, Georgios C. |4 aut | |
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10.1007/s00397-010-0518-x doi (DE-627)OLC2056013886 (DE-He213)s00397-010-0518-x-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Zupančič Valant, Andreja verfasserin aut The influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. Hemorheology Blood Volume expanders Herschel–Bulkley model Hemodynamics Žiberna, Lovro aut Papaharilaou, Yannis aut Anayiotos, Andreas aut Georgiou, Georgios C. aut Enthalten in Rheologica acta Springer-Verlag, 1961 50(2011), 4 vom: 22. Jan., Seite 389-402 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:50 year:2011 number:4 day:22 month:01 pages:389-402 https://doi.org/10.1007/s00397-010-0518-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4323 AR 50 2011 4 22 01 389-402 |
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10.1007/s00397-010-0518-x doi (DE-627)OLC2056013886 (DE-He213)s00397-010-0518-x-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Zupančič Valant, Andreja verfasserin aut The influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. Hemorheology Blood Volume expanders Herschel–Bulkley model Hemodynamics Žiberna, Lovro aut Papaharilaou, Yannis aut Anayiotos, Andreas aut Georgiou, Georgios C. aut Enthalten in Rheologica acta Springer-Verlag, 1961 50(2011), 4 vom: 22. Jan., Seite 389-402 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:50 year:2011 number:4 day:22 month:01 pages:389-402 https://doi.org/10.1007/s00397-010-0518-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4323 AR 50 2011 4 22 01 389-402 |
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10.1007/s00397-010-0518-x doi (DE-627)OLC2056013886 (DE-He213)s00397-010-0518-x-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Zupančič Valant, Andreja verfasserin aut The influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. Hemorheology Blood Volume expanders Herschel–Bulkley model Hemodynamics Žiberna, Lovro aut Papaharilaou, Yannis aut Anayiotos, Andreas aut Georgiou, Georgios C. aut Enthalten in Rheologica acta Springer-Verlag, 1961 50(2011), 4 vom: 22. Jan., Seite 389-402 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:50 year:2011 number:4 day:22 month:01 pages:389-402 https://doi.org/10.1007/s00397-010-0518-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4323 AR 50 2011 4 22 01 389-402 |
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10.1007/s00397-010-0518-x doi (DE-627)OLC2056013886 (DE-He213)s00397-010-0518-x-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Zupančič Valant, Andreja verfasserin aut The influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. Hemorheology Blood Volume expanders Herschel–Bulkley model Hemodynamics Žiberna, Lovro aut Papaharilaou, Yannis aut Anayiotos, Andreas aut Georgiou, Georgios C. aut Enthalten in Rheologica acta Springer-Verlag, 1961 50(2011), 4 vom: 22. Jan., Seite 389-402 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:50 year:2011 number:4 day:22 month:01 pages:389-402 https://doi.org/10.1007/s00397-010-0518-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4323 AR 50 2011 4 22 01 389-402 |
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10.1007/s00397-010-0518-x doi (DE-627)OLC2056013886 (DE-He213)s00397-010-0518-x-p DE-627 ger DE-627 rakwb eng 540 660 VZ 530 VZ Zupančič Valant, Andreja verfasserin aut The influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. Hemorheology Blood Volume expanders Herschel–Bulkley model Hemodynamics Žiberna, Lovro aut Papaharilaou, Yannis aut Anayiotos, Andreas aut Georgiou, Georgios C. aut Enthalten in Rheologica acta Springer-Verlag, 1961 50(2011), 4 vom: 22. Jan., Seite 389-402 (DE-627)129512052 (DE-600)210407-6 (DE-576)014919613 0035-4511 nnns volume:50 year:2011 number:4 day:22 month:01 pages:389-402 https://doi.org/10.1007/s00397-010-0518-x lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OPC-GEO SSG-OPC-GGO GBV_ILN_40 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4012 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4323 AR 50 2011 4 22 01 389-402 |
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the influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations |
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The influence of temperature on rheological properties of blood mixtures with different volume expanders—implications in numerical arterial hemodynamics simulations |
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Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. © Springer-Verlag 2011 |
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Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. © Springer-Verlag 2011 |
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Abstract During the complicated cardiac surgery on a non-beating heart with cardiopulmonary bypass, protection of the heart is accomplished by injecting cold cardioplegic solutions. In most forms of circulatory shock, it is necessary to immediately restore the circulating volume. Intravenous solutions of volume expanders, such as hydroxyethyl starch and dextrans, are used to increase the volume of fluid in the circulating blood. In this work, blood samples of six donors were obtained and used to prepare mixtures with different volume expanders in concentrations ranging from 10 to 50 vol./vol.%. The flow curves of all mixtures in the temperature range from 4°C to 37°C were constructed and fitted to the Herschel–Bulkley model, in order to extract the shear thinning and yield stress parameters. To assess the influence of the observed changes in the rheological properties of blood on the hemodynamics in arterial vasculature, a realistic three-dimensional rigid-wall computational model was constructed from MRI images of the right carotid bifurcation obtained in vivo from a healthy male volunteer. The time-varying flow field was numerically computed using the Newtonian model as well as the Herschel–Bulkley model with the Papanastasiou regularization. The numerical simulations indicate only moderate changes in the time-averaged flow field that become accentuated when the instantaneous flow field is considered. We also found that although the influence of temperature, hematocrit, and volume expanders on hemodynamics is significant, this can primarily be attributed to the changes in the nominal viscosity of the flow medium. © Springer-Verlag 2011 |
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