| Intraoperative flow rate measurements of T-grafts: calculating a flow reserve. | |
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MedLine Citation:
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PMID: 11276482 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To evaluate the inflow of the left internal thoracic artery (LITA) and the effect of adding a radial artery T-graft to distal LITA flow, and to calculate the LITA flow reserve. METHODS: Twenty-two patients underwent myocardial revascularization using the radial artery-LITA T-graft in which intraoperative flow measurements were recorded. An ultrasonic flowmeter was used to directly measure flow rates in the T-graft: 1) before completion of the distal anastomoses to measure maximum flow rates (free flow), and 2) after completion of distal anastomoses. RESULTS: The mean free flow rates of the LITA alone, radial artery graft alone, and T-graft (total flow) were 104 +/- 70, 151 +/- 89, and 230 +/- 102 ml/min, respectively. The mean flow rates on bypass of the distal LITA, radial artery graft, and T-graft after the distal anastomoses were completed were 24 +/- 16, 32 +/- 27, and 63 +/- 29 ml/min, respectively. The mean T-graft flow off bypass was 66 +/- 29 ml/min. The mean flow reserve was 70%. CONCLUSION: The LITA has a flow reserve by which proximal flow rates will increase to accommodate the addition of a radial artery T-graft without compromising LITA flow distal to the T anastomosis. |
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Authors:
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J R Delatore; T E Theman; F M Garzia |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The heart surgery forum Volume: 2 ISSN: 1098-3511 ISO Abbreviation: Heart Surg Forum Publication Date: 1999 |
Date Detail:
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Created Date: 2001-03-29 Completed Date: 2001-05-24 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 100891112 Medline TA: Heart Surg Forum Country: United States |
Other Details:
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Languages: eng Pagination: 235-8 Citation Subset: IM |
Affiliation:
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Division of Cardiovascular Surgery, Department of Surgery, St. Luke's Hospital, Bethlehem, Pennsylvania 18015, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Female Hemorheology* Humans Male Middle Aged Monitoring, Intraoperative Myocardial Revascularization / methods* Radial Artery / transplantation* Regional Blood Flow Thoracic Arteries / transplantation* Treatment Outcome |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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