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Yambe T, Nitta S, Katahira Y, Sonobe T, Naganuma S, Akiho H, Kakinuma Y, Izutzu K, Kikuchi Y, Naganuma T, Kobayashi S, Matsuzawa H, Tanaka M, Miura M, Sato N, Fukuju T, Mohri H, Yoshizawa M, Takeda H. Estimation of the following Cardiac Output Using Sympathetic Tone and Hemodynamics for the Control of a Total Artificial Heart. Int J Artif Organs 2018. [DOI: 10.1177/039139889201501007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A sympathetic neurogram is potentially useful for the development of a real time total artificial heart (TAH) control system. We used sympathetic tone and hemodynamic derivatives to estimate the following cardiac output in acute animal experiments using adult mongrel dogs. Moving averages of the mean left atrial pressure and mean aortic pressure were used as parameters of the preload and afterload, respectively. Renal sympathetic nerve activity (RSNA) was employed as a parameter of sympathetic tone. Equations for the following cardiac output were calculated using multiple linear regression analysis of the time series data. A significant correlation was observed between the estimated and following measured cardiac output. These results suggest the potential usefulness of the sympathetic neurogram for the real time TAH automatic control system.
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Affiliation(s)
- T. Yambe
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - S. Nitta
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - Y. Katahira
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - T. Sonobe
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - S. Naganuma
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - H. Akiho
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - Y. Kakinuma
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - K. Izutzu
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - Y. Kikuchi
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - T. Naganuma
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - S. Kobayashi
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - H. Matsuzawa
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - M. Tanaka
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - M. Miura
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - N. Sato
- Department of Medical Engineering and Cardiology, Research Institute for Chest Diseases and Cancer
| | - T. Fukuju
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Tohoku University
| | - H. Mohri
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Tohoku University
| | - M. Yoshizawa
- Department of Electrical Communications, Faculty of Engineering
| | - H. Takeda
- Department of Electrical Engineering, Faculty of Engineering, Tohoku University, Sendai - Japan
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Yambe T, Nitta S, Katahira Y, Sonobe T, Naganuma S, Akiho H, Kakinuma Y, Izutzu K, Kikuchi Y, Naganuma T. Estimation of the following cardiac output using sympathetic tone and hemodynamics for the control of a total artificial heart. Int J Artif Organs 1992; 15:606-10. [PMID: 1428209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A sympathetic neurogram is potentially useful for the development of a real time total artificial heart (TAH) control system. We used sympathetic tone and hemodynamic derivatives to estimate the following cardiac output in acute animal experiments using adult mongrel dogs. Moving averages of the mean left atrial pressure and mean aortic pressure were used as parameters of the preload and afterload, respectively. Renal sympathetic nerve activity (RSNA) was employed as a parameter of sympathetic tone. Equations for the following cardiac output were calculated using multiple linear regression analysis of the time series data. A significant correlation was observed between the estimated and following measured cardiac output. These results suggest the potential usefulness of the sympathetic neurogram for the real time TAH automatic control system.
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Affiliation(s)
- T Yambe
- Department of Medical Engineering and Cardiology, School of Medicine, Tohoku University, Sendai, Japan
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