| Transcutaneous ultrasound measurement of blood-flow in internal mammary artery to coronary artery grafts. | |
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MedLine Citation:
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PMID: 1346657 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Transcutaneous doppler ultrasound was used to examine internal-mammary-artery (IMA) blood-flow in 26 patients with IMA coronary bypass grafts. The ungrafted right IMA could be seen in all of 19 patients, the grafted left IMA in 16 of 26, and the grafted right IMA in 3 of 7. The velocity profile recorded from the proximal part of the grafted IMA is distinct from that of an ungrafted artery, with a systolic peak which reflects graft capacitance in the face of high intramyocardial resistance, and a diastolic peak which represents graft conductance when intramyocardial resistance is low. Total graft blood-flow can be estimated from the mean velocity and the measured vessel diameter; resting flows ranged from 22 to 79 ml/min. In recently grafted patients, resting graft blood-flow correlated with myocardial "run-off" estimated from preoperative arteriograms; graft blood-flow increased appropriately with exercise. This simple, non-invasive technique to measure IMA graft blood-flow may find applications for routine postoperative follow-up of patients with IMA grafts and for studies on the physiology and pharmacology of coronary artery blood-flow. |
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Authors:
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D P de Bono; N J Samani; T J Spyt; T Hartshorne; A J Thrush; D H Evans |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Lancet Volume: 339 ISSN: 0140-6736 ISO Abbreviation: Lancet Publication Date: 1992 Feb |
Date Detail:
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Created Date: 1992-03-18 Completed Date: 1992-03-18 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 2985213R Medline TA: Lancet Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 379-81 Citation Subset: AIM; IM |
Affiliation:
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Department of Cardiology, University of Leicester, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Flow Velocity* Coronary Circulation* Coronary Vessels / physiopathology*, ultrasonography Female Humans Internal Mammary-Coronary Artery Anastomosis* Male Mammary Arteries / physiopathology*, ultrasonography Methods |
| Comments/Corrections | |
Comment In:
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Lancet. 1992 Apr 4;339(8797):869
[PMID:
1347875
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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