| Do changes in blood flow in the subclavian artery affect flow volume in IMA grafts after complete arterial revascularization with the T-graft technique? | |
| | |
MedLine Citation:
|
PMID: 11339457 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: The T-graft procedure achieves complete arterial coronary revascularization with only two conduits. In this technique, all the bypass anastomoses are supplied by the left internal mammary artery (IMA). Changes in flow conditions or flow redistribution in the subclavian artery may thus sigificantly influence coronary perfusion. The objective of this study was to determine whether changes in blood flow in the subclavian artery affect the flow in IMA grafts in patients who have undergone complete arterial revascularization with T-grafts. METHODS: Quantitative flow volume and flow profiles in the IMA graft and the proximal subclavian artery were measured with a flow-wire in 20 patients one week postoperatively. Following baseline measurements, brachial artery constriction was achieved by applying a blood pressure measurement cuff to the patient's left upper arm. After 5 minutes, quantitative flow in the IMA and in the proximal subclavian artery was assessed. The cuff was then released and the measurements repeated. RESULTS: Flow in the subclavian artery changed significantly (p < 0.01) from baseline (355.4 +/- 95.2 ml/ min) to constriction (171.2 +/- 61.3 ml/min) and hyperemia (679.3 +/- 195.1 ml/min). Flow in the IMA graft remained constant irrespective of subclavian artery flow (75.4 +/- 26.2 ml/min vs. 78.0 +/- 28.9 ml/min vs. 75.5 +/- 29.3 ml/min, respectively). The flow profile in the IMA was similarily unchanged. CONCLUSION: In patients in whom the coronary bypass blood flow is dependent on the left IMA, neither the quantitative flow volume nor the flow profile are altered by changes in blood flow of the subclavian artery. |
| | |
Authors:
|
B Hennen; T Markwirth; B Scheller; H J Schäfers; O Wendler |
Related Documents
:
|
160747 - Determination of blood flow through arteriovenous fistulae and shunts. 3896607 - A new method for monitoring circulation of grafted bone by use of electrochemically gen... 821697 - Burn wounds: selection and preservation of skin, natural products, blood, and blood pro... 7880447 - Cognitive deficits induced by global cerebral ischaemia: relationship to brain damage a... 3718767 - Measurement of adenosine triphosphate and 2,3-diphosphoglycerate in stored blood with 3... 2252667 - An electrohydraulic total artificial heart with a separately placed actuator. |
Publication Detail:
|
Type: Comparative Study; Evaluation Studies; Journal Article |
Journal Detail:
|
Title: The Thoracic and cardiovascular surgeon Volume: 49 ISSN: 0171-6425 ISO Abbreviation: Thorac Cardiovasc Surg Publication Date: 2001 Apr |
Date Detail:
|
Created Date: 2001-05-07 Completed Date: 2001-09-20 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7903387 Medline TA: Thorac Cardiovasc Surg Country: Germany |
Other Details:
|
Languages: eng Pagination: 84-8 Citation Subset: IM |
Affiliation:
|
Medizinische Klinik III (Kardiologie/Angiologie), Universitätskliniken des Saarlandes, Homburg/Saar, Germany. hennen@med-in.uni-sb.de |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aged Blood Flow Velocity Coronary Angiography Coronary Artery Bypass / adverse effects, methods* Coronary Disease / diagnosis, physiopathology, surgery* Female Follow-Up Studies Graft Survival Heart Catheterization Humans Laser-Doppler Flowmetry Male Mammary Arteries / transplantation* Middle Aged Postoperative Period Probability Prospective Studies Subclavian Artery / physiopathology*, ultrasonography* Treatment Outcome |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Primary tissue failure of bioprostheses: new evidence from in vitro tests.
Next Document: The influence of patient strength, aerobic capacity and body composition upon outcomes after coronar...