| Validation of a new transit time ultrasound flowmeter in man. | |
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MedLine Citation:
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PMID: 8696905 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: To validate the new CardioMed CM 4000 transit time ultrasound apparatus for intraoperative measurement of volume blood flow in vivo in man. DESIGN: Open, prospective series. MATERIALS: Thirteen patients undergoing in situ saphenous vein grafting for chronic critical leg ischaemia and 12 patients subjected to myocardial revascularisation with the internal thoracic artery as coronary bypass. METHODS: During operations, volume blood flows were measured simultaneously by exsanguination from the cut distal end of the in situ saphenous vein graft or the internal thoracic artery and by the transit time flowmeter equipment. In addition, the feasibility to detect arteriovenous fistula during in situ saphenous vein grafting was examined. RESULTS: Within the examined blood flow range, the volume blood flow determined by the transit time method corresponded to the directly measured blood flow. For in situ saphenous vein grafts: y = -2.4 + 0.95.x (r = 0.99; 35 measurements in 13 patients), and for internal thoracic artery grafts: y = -9.6 + 1.1.x (r = 0.99; 21 measurements in 12 patients), where y is blood flow determined by transit time, and x is directly measured blood flow by exsanguination (r = correlation coefficient) as calculated by the least squares regression method. Fistula detection was easy and swift. CONCLUSIONS: The transit time apparatus was simple to use during intraoperative settings and gave fast, precise measurements of volume blood flow. |
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Authors:
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J Laustsen; E M Pedersen; K Terp; D Steinbrüchel; H H Kure; P K Paulsen; H Jørgensen; W P Paaske |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery Volume: 12 ISSN: 1078-5884 ISO Abbreviation: Eur J Vasc Endovasc Surg Publication Date: 1996 Jul |
Date Detail:
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Created Date: 1996-09-03 Completed Date: 1996-09-03 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9512728 Medline TA: Eur J Vasc Endovasc Surg Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 91-6 Citation Subset: IM |
Affiliation:
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Department of Cardiothoracic and Vascular Surgery T, Aarhus University Hospital, Skejby Sygehus, Denmark. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Arteriovenous Fistula / diagnosis Blood Flow Velocity Blood Volume Coronary Artery Bypass Equipment Design Feasibility Studies Female Hemorheology / instrumentation* Humans Ischemia / surgery Leg / blood supply Male Middle Aged Monitoring, Intraoperative / instrumentation Prospective Studies Reproducibility of Results Rheology / instrumentation* Saphenous Vein / transplantation Thoracic Arteries / transplantation Ultrasonography / instrumentation* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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