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Titolo:
NEW APPROACH TO PATENCY AND FLOW ASSESSMENT AFTER LEFT INTERNAL THORACIC ARTERY HYPOPERFUSION SYNDROME WITH ADDITIONAL SAPHENOUS-VEIN GRAFTTO THE LEFT ANTERIOR DESCENDING ARTERY WITH PHASE-CONTRAST MAGNETIC-RESONANCE ANGIOGRAPHY
Autore:
ZUND G; HAUSER M; VOGT P; DAVIS CP; LACHAT M; KUNZLI A; GENONI M; TURINA M;
Indirizzi:
UNIV ZURICH HOSP,CARDIOVASC SURG CLIN,RAEMISTR 100 CH-8091 ZURICH SWITZERLAND UNIV ZURICH HOSP,DEPT MED RADIOL,INST DIAGNOST RADIOL CH-8091 ZURICH SWITZERLAND UNIV ZURICH HOSP,MR CTR CH-8091 ZURICH SWITZERLAND
Titolo Testata:
Journal of thoracic and cardiovascular surgery
fascicolo: 3, volume: 114, anno: 1997,
pagine: 428 - 433
SICI:
0022-5223(1997)114:3<428:NATPAF>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAMMARY-ARTERY; CORONARY-ARTERY; BYPASS GRAFTS; COMPETITIVE FLOW; SURVIVAL; ISCHEMIA; SPASM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
G. Zund et al., "NEW APPROACH TO PATENCY AND FLOW ASSESSMENT AFTER LEFT INTERNAL THORACIC ARTERY HYPOPERFUSION SYNDROME WITH ADDITIONAL SAPHENOUS-VEIN GRAFTTO THE LEFT ANTERIOR DESCENDING ARTERY WITH PHASE-CONTRAST MAGNETIC-RESONANCE ANGIOGRAPHY", Journal of thoracic and cardiovascular surgery, 114(3), 1997, pp. 428-433

Abstract

Objective: Perioperative and early postoperative flow reduction of a left internal thoracic artery conduit is a rare complication of myocardial revascularization and may lead to the potentially fatal left internal thoracic artery hypoperfusion syndrome, It has been advocated that an additional vein graft be placed to the distal left anterior descending artery to provide sufficient myocardial perfusion, Some evidenceexists, however, that this high-flow vein might lead to competing of even backward how through the internal thoracic artery, Methods: In the past 2 years, 21 patients received an additional vein graft to the distal left anterior descending artery for left internal thoracic artery hypoperfusion syndrome, Nineteen of these patients were available for magnetic resonance imaging. Early (<6 months) and late (>12 months) postoperative flow measurements, both in the left internal thoracic artery and in the saphenous vein grafts, were performed by means of conventional and a segmented k-space phase-contrast magnetic resonance angiography technique. Results: Early magnetic resonance examinations indicated that all conduits had adapted to the coronary flow type with predominant diastolic perfusion, Patency rate both at the early and at the late study was 100%, No concurrent flow, flow reversal, or steal phenomena were observed, Mean flow rates were 49.2 ml/min for the left internal thoracic artery and 72.6 ml/min for the saphenous vein graft. Conclusion: On the basis of the how data obtained with magnetic resonance angiography, the use of an additional saphenous vein graft as the treatment of choice in left internal thoracic artery hypoperfusion syndrome does not lead to occlusion of the artery, Conduit flow adaptation to the diastolic predominance occurs in the first 6 months after operation.

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Documento generato il 21/09/20 alle ore 05:33:13