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  • Title: Reduced distal embolization with transluminal extraction atherectomy compared to balloon angioplasty for saphenous vein graft disease.
    Author: Misumi K, Matthews RV, Sun GW, Mayeda G, Burstein S, Shook TL.
    Journal: Cathet Cardiovasc Diagn; 1996 Nov; 39(3):246-51. PubMed ID: 8933966.
    Abstract:
    Extraction atherectomy utilizes suction aspiration as an attempt to limit distal emboli during atherectomy. We sought to test the hypothesis that extraction atherectomy produces less distal embolization than balloon angioplasty when treating saphenous vein grafts. Among 163 consecutive, nonrandomized patients, 103 patients underwent transluminal extraction catheter (TEC) atherectomy with or without adjunctive balloon angioplasty, and 60 patients had conventional balloon angioplasty. Both groups showed comparably high procedural success rates (TEC 90.3%, angioplasty 83.3%, P = NS). TEC cases had a significantly lower incidence of angiographic distal embolization, compared with angioplasty (3.9% vs. 16.7%, P = 0.005). In cases with angiographic evidence of thrombus in the grafts, TEC maintained a significantly lower incidence of distal embolization than angioplasty (5.6% vs. 31.8%, P = 0.004). There were no statistical differences between the two groups regarding the incidence of other procedure-related complications, including death, myocardial infarction, or emergency coronary artery bypass grafting. TEC atherectomy appears to have a significantly lower incidence of distal embolization than balloon angioplasty when treating saphenous vein grafts, particularly in the presence of angiographically apparent thrombus.
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