| Effects of intra-aortic balloon pumping on graft flow in coronary surgery: an intraoperative transit-time flowmetric study. | |
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MedLine Citation:
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PMID: 18721567 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: We investigated hemodynamic effects of intra-aortic balloon pumping (IABP) in in-situ and aorta-coronary (A-C) grafts during coronary artery bypass grafting (CABG). METHODS: One hundred seventy-two grafts, including 84 in-situ left internal thoracic arteries (LITAs), were examined intraoperatively with a transit-time flowmeter in 84 patients who had prophylactic IABP. The following measurements were obtained for each graft during off-IABP and on-IABP: mean flow, maximal flow, pulsatility index, and diastolic filling index. Coronary angiograms were performed 14 +/- 5 days after coronary artery bypass graft surgery to verify the patency of the grafts. RESULTS: All measurements of 163 patent and measurable grafts were significantly increased with IABP: mean flow 46 +/- 27 to 51 +/- 29 mL/min; maximal flow 87 +/- 52 to 121 +/- 69 mL/min; pulsatility index 2.2 +/- 1.4 to 3.1 +/- 1.4; and diastolic filling index 64% +/- 8% to 71% +/- 9% (p < 0.001). Among them, the degrees of increase of mean flow and diastolic filling index were significantly different between the in-situ LITAs and A-C grafts (mean flow 18% +/- 20% versus 10% +/- 15%, p = 0.04; diastolic filling index 10% +/- 8% versus 14% +/- 9%, p = 0.04). CONCLUSIONS: IABP assist significantly increases graft flow and also diastolic components of flow. The degree of increase is greater in the in-situ LITA supplying the left anterior descending artery than in A-C grafts anastomosed to other coronary arteries. IABP increases the diastolic component more in A-C grafts than in in-situ LITAs, probably because of different flow characteristics of the two grafts. |
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Authors:
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Yoshiyuki Takami; Hiroshi Masumoto |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Annals of thoracic surgery Volume: 86 ISSN: 1552-6259 ISO Abbreviation: Ann. Thorac. Surg. Publication Date: 2008 Sep |
Date Detail:
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Created Date: 2008-08-25 Completed Date: 2008-09-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 15030100R Medline TA: Ann Thorac Surg Country: Netherlands |
Other Details:
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Languages: eng Pagination: 823-7 Citation Subset: AIM; IM |
Affiliation:
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Department of Cardiovascular Surgery, Nagoya Daini Red Cross Hospital, Japan. takami@nagoya2.jrc.or.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Coronary Angiography Coronary Artery Bypass* Coronary Circulation Female Hemodynamics Humans Intra-Aortic Balloon Pumping* Intraoperative Period Male Rheology / methods |
| Comments/Corrections | |
Comment In:
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Ann Thorac Surg. 2008 Sep;86(3):827
[PMID:
18721568
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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