| Thallium-201 myocardial imaging before and after coronary revascularization: assessment of regional myocardial blood flow and graft patency. | |
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MedLine Citation:
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PMID: 303157 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Twenty patients underwent myocardial imaging with Thallium-201 (201Tl) before and subsequent to coronary artery bypass grafting. All patients had rest and maximal treadmill exercise imaging postoperatively. Eleven of the 20 patients had rest and exercise 201Tl images preoperatively; 9/20 only had rest imaging preoperatively. Postoperative regional exercise perfusion was improved in seven of the 11 patients who had preoperative exercise images, and was associated with regional graft patency in each case. Thirteen of 20 patients showed no new defect with postoperative exercise imaging. The remaining seven patients developed or had an increased defect with exercise. The patients with no new perfusion defects during postoperative study has 26/30 grafts patent (87%). Patients developing a new perfusion defect with exercise had fewer grafts patent (7 of 13 [54%]; P less than 0.03). In these seven cases, a new exercise-induced defect was associated with regional graft closure or residual nonoperated disease. Knowledge of the preoperative coronary anatomy allowed the distinction between ungrafted areas and regional graft dysfunction. We conclude that preoperative and postoperative 201Tl imaging may noninvasively predict graft closure and/or improved regional perfusion with patent grafts. |
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Authors:
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J L Ritchie; K A Narahara; G B Trobaugh; D L Williams; G W Hamilton |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Circulation Volume: 56 ISSN: 0009-7322 ISO Abbreviation: Circulation Publication Date: 1977 Nov |
Date Detail:
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Created Date: 1977-12-29 Completed Date: 1977-12-29 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0147763 Medline TA: Circulation Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 830-6 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Angina Pectoris
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surgery Aortography Coronary Angiography Coronary Artery Bypass* Coronary Circulation* Coronary Disease / radionuclide imaging Electrocardiography Exercise Test Humans Postoperative Complications / radionuclide imaging* Radioisotopes / diagnostic use* Thallium / diagnostic use* |
| Chemical | |
Reg. No./Substance:
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0/Radioisotopes; 7440-28-0/Thallium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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