| Blood flow measurement in PTFE grafts. | |
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MedLine Citation:
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PMID: 3294848 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In vascular surgery peroperative control of the result of reconstruction is essential. PTFE-grafts have been known to be "resistant" to flow registration with electromagnetic flowmetry because of the electrical isolation. Similarly, intraoperative Doppler registration has been impossible because of the attenuation of the ultrasound in the graft wall. The leading disturbances are obviously caused by air in the graft material and are not caused by the material itself. By squeezing the graft carefully between the thumb and forefinger, blood slowly penetrates the wall colouring it red. The squeezing is performed intermittently to avoid occlusion of the graft. Excellent flow registration is obtained after less than 2 min squeezing of the thin walled graft, while at least 5 min squeezing is necessary to obtain signals from thick walled grafts. To obtain satisfactory ultrasound signals more squeezing is necessary. |
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Authors:
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H Rostad; A Grip; C Hall |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of cardiovascular surgery Volume: 28 ISSN: 0021-9509 ISO Abbreviation: J Cardiovasc Surg (Torino) Publication Date: 1987 May-Jun |
Date Detail:
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Created Date: 1987-07-20 Completed Date: 1987-07-20 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0066127 Medline TA: J Cardiovasc Surg (Torino) Country: ITALY |
Other Details:
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Languages: eng Pagination: 262-5 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Blood Flow Velocity* Blood Vessel Prosthesis* Dogs Electromagnetic Phenomena / diagnostic use Intraoperative Period Polytetrafluoroethylene / therapeutic use* Ultrasonography |
| Chemical | |
Reg. No./Substance:
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9002-84-0/Polytetrafluoroethylene |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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