| Comparative study of rigid vs flexible pneumatic artificial blood pumps. | |
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MedLine Citation:
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PMID: 524593 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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For HR in the range of 70--110 beats/min, and same driving conditions, the pump with rigid housing produced a maximum of 15% greater CO than that with the soft housing, against an arterial pressure of 125/75 mm Hg. All 3 pumps exhibited greater sensitivity in function curves for HR in the range of 90--110 beats/min. The greatest sensitivity point in the function curve, for the rigid housing pump was found to be independent of HR change in the range of 90--110 beats/min. However, with an increase in HR the function curves shifted to the right in the case of soft housing pumps. In other words, greater atrial pressure was required to obtain the same CO with an increase in HR. The linear relationship found between CO and HR in flexible and soft housing pumps was very advantageous for controlling CO, whenever such change was required. In all 3 hearts there was a decrease in pulse pressure with an increase in HR. The decrease in pulse pressure was primarily due to the increase in diastolic pressure, while systolic pressure remained almost constant at all HRs. Since these experiments were conducted in a test circulatory system using an aqueous-glycerin solution, information on the degree of hemolysis was not addressed in this report. |
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Authors:
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M Nosé; A K Vakamudi; T Kudo; T Akutsu; N H Hwang |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Transactions - American Society for Artificial Internal Organs Volume: 25 ISSN: 0066-0078 ISO Abbreviation: Trans Am Soc Artif Intern Organs Publication Date: 1979 |
Date Detail:
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Created Date: 1980-03-27 Completed Date: 1980-03-27 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7506088 Medline TA: Trans Am Soc Artif Intern Organs Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 268-73 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Circulation Blood Pressure* Cardiac Output Elasticity Heart Rate Heart, Artificial* Humans Methylmethacrylates* Models, Cardiovascular Polyurethanes* Surface Properties |
| Chemical | |
Reg. No./Substance:
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0/Methylmethacrylates; 0/Polyurethanes |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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