| Flow analysis of left internal thoracic artery in myocardial revascularization surgery using y graft. | |
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MedLine Citation:
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PMID: 17215965 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In order to evaluate the left internal thoracic artery flow pattern, when the vessel is used as a graft to supply the left coronary artery system, we evaluated flow by Doppler measurement, both at rest and under dobutamine stress. There were 2 groups of 20 patients each: group A patients received only a left internal thoracic artery graft to the left anterior descending artery, and group B patients received a pedicled left internal thoracic artery graft associated with a vein graft, which together supplied the left anterior descending artery and another branch of the left coronary artery. Angiography showed patent grafts in all patients from both groups. The following characteristics were evaluated: systolic flow, diastolic flow, total flow, total flow under stress/total flow at rest ratio, systolic peak velocity, diastolic peak velocity, and systolic peak velocity/diastolic peak velocity ratio. In group A, the total flow was 45.5 +/- 21.6 mL/min at rest and 68.3 +/- 32.9 mL/min under stress. In group B, the total flow was 98.2 +/- 50.4 mL/min at rest and 175.7 +/- 79.2 mL/min under stress. Comparison between groups showed a total flow increase in group B of 115.8% (P=0.0002) at rest and 157.2% (P <0.0001) under stress. The other characteristics were also statistically significant, except systolic flow, total flow under stress/total flow at rest ratio, and systolic peak velocity. Our results showed that the left internal thoracic artery sufficiently supplies regional myocardium at rest and during exercise (stress), demonstrating its great adaptability in response to demand. |
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Authors:
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José G Lobo Filho; Maria C A Leitão; Antonio J V Forte; Heraldo G Lobo Filho; André A Silva; Eduardo S Bastos; Henrique Murad |
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Publication Detail:
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Type: Clinical Trial; Journal Article |
Journal Detail:
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Title: Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital Volume: 33 ISSN: 0730-2347 ISO Abbreviation: Tex Heart Inst J Publication Date: 2006 |
Date Detail:
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Created Date: 2007-01-11 Completed Date: 2007-03-08 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 8214622 Medline TA: Tex Heart Inst J Country: United States |
Other Details:
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Languages: eng Pagination: 430-6 Citation Subset: IM |
Affiliation:
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Department of Heart Surgery of the Institute of Heart and Lung-ICORP, 60115280 Fortaleza, Ceará, Brazil. glaucolobo@uol.com.br |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Blood Flow Velocity Coronary Angiography* Coronary Artery Bypass* Coronary Circulation* Coronary Stenosis / physiopathology*, radiography, surgery Coronary Vessels / physiopathology* Heart / physiopathology Humans Middle Aged Prospective Studies Transplants |
| Comments/Corrections | |
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