Indirect Flow Rate Estimation of the NEDO PI Gyro Pump for Chronic BVAD Experiments
| Autor: | Tadashi Motomura, Daisuke Ogawa, Yukihiko Nosé, Kenichi Abe, Hisashi Okubo, Makoto Yoshizawa, Akira Tanaka, Stephen R. Igo, P. Olegario, Toshiya Okahisa, Takeshi Oda |
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| Rok vydání: | 2006 |
| Předmět: |
Correlation coefficient
Biventricular assist device medicine.medical_treatment Biomedical Engineering Biophysics Pulsatile flow Centrifugation Bioengineering Heart Artificial Biomaterials Implants Experimental medicine Animals Heart-Assist Devices Infusion Pumps Mathematics Miniaturization Equipment Design General Medicine Volumetric flow rate Blood pump Flow (mathematics) Evaluation Studies as Topic Regional Blood Flow Research Design Pulsatile Flow Ventricular assist device Models Animal Cattle Biomedical engineering |
| Zdroj: | ASAIO Journal. 52:266-271 |
| ISSN: | 1058-2916 |
| DOI: | 10.1097/01.mat.0000219066.21197.34 |
| Popis: | In totally implantable ventricular assist device systems, measuring flow rate of the pump is necessary to ensure proper operation of the pump in response to the recipient's condition or pump malfunction. To avoid problems associated with the use of flow probes, several methods for estimating flow rate of a rotary blood pump used as a ventricular assist device have been studied. In the present study, we have performed a chronic animal experiment with two NEDO PI gyro pumps as the biventricular assist device for 63 days to evaluate our estimation method by comparing the estimated flow rate with the measured one every 2 days. Up to 15 days after identification of the parameters, our estimations were accurate. Errors increased during postoperation days 20 to 30. Meanwhile, their correlation coefficient r was higher than 0.9 in all the acquired data, and estimated flow rate could simulate the profile of the measured one. |
| Databáze: | OpenAIRE |
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