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(Circulation. 1997;96:2854-2858.)
© 1997 American Heart Association, Inc.

Articles

Effects of Coronary Stenting on Restenosis and Occlusion After Angioplasty of the Culprit Vessel in Patients With Recent Myocardial Infarction

Christophe Bauters, MD; Jean-Marc Lablanche, MD; Eric Van Belle, MD; Rodica Niculescu, MD; Thibaud Meurice, MD; Eugène P. Mc Fadden, MRCP; ; Michel E. Bertrand, MD

From the Service de Cardiologie B et Hémodynamique, Hôpital Cardiologique, Lille, France.

Correspondence to M.E. Bertrand, MD, Service de Cardiologie B, Hôpital Cardiologique, Blvd du Professeur J Leclercq, 59037 Lille Cedex, France.

Background PTCA of an infarct-related lesion is associated with a high rate of restenosis and/or vessel occlusion. Recent studies have shown that coronary stenting in patients with stable or unstable angina is associated with a significant reduction in the restenosis rate compared with conventional balloon angioplasty. However, no information is available concerning the long-term effect of coronary stenting at infarct-related lesions compared with balloon angioplasty alone.

Methods and Results One hundred consecutive patients undergoing stent implantation at an infarct-related lesion and systematic 6-month angiographic follow-up were matched for major pre-PTCA clinical and angiographic variables with a group of patients undergoing conventional angioplasty. Preprocedural, postprocedural, and 6-month follow-up angiograms were analyzed with quantitative angiography. Coronary stenting was performed as a bailout procedure after failed balloon angioplasty in 20%, for a suboptimal result after balloon angioplasty in 71%, and electively in 9%. Stent implantation was associated with a higher acute gain than balloon angioplasty. At follow-up, the minimal lumen diameter was significantly (P<.0001) larger in the stent group (1.72±0.69 versus 1.23±0.72 mm). Restenosis (>50% DS at follow-up) occurred in 27% of the stent group versus 52% of the balloon group (P<.005). At follow-up, total occlusion at the dilated site occurred in 1% of the stent group versus 14% of the balloon group (P<.005).

Conclusions Coronary stenting of infarct-related lesions is associated with a highly beneficial effect on 6-month angiographic outcome compared with balloon angioplasty alone. Further studies are needed to establish whether the beneficial effect of coronary stenting on long-term vessel patency is associated with an improvement in left ventricular function or in clinical outcome.

Key Words: stents • angioplasty • myocardial infarction • occlusion

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