(Circulation. 2000;102:2497.)
© 2000 American Heart Association, Inc.
Clinical Investigation and Reports |
Ultrasound-Guided Strategy for Provisional Stenting With Focal Balloon Combination Catheter
Results From the Randomized Strategy for Intracoronary Ultrasound-Guided PTCA and Stenting (SIPS) Trial
From the Department of Clinical Research, Herz-Zentrum, Bad Krozingen, Germany.
Correspondence to Axel W. Frey, MD, PhD, Head of Department, Clinical Research, Herz-Zentrum, Sudring 15, Bad Krozingen, Germany 79188. E-mail axelfrey{at}t-online.de
Background—Intracoronary ultrasound (ICUS) has provided insights into vascular pathology and interventional therapy. The Strategy for ICUS-Guided PTCA and Stenting (SIPS) trial tested the hypothesis that routine ICUS guidance of coronary interventions improves outcome.
Methods and Results—A single-center consecutive-patient randomized design (with 6-month angiographic and 2-year clinical follow-up) was used. Consecutive patients (no chronic total occlusions or emergency procedures) were randomized to ICUS-guided provisional stenting or standard angiographic guidance. Quantitative angiographic minimal lumen diameter (MLD), angiographic restenosis, clinically driven target lesion revascularization, and major adverse cardiac events (MACEs) were evaluated. A total of 291 procedures (356 lesions) were included. Procedure success was higher in the ICUS-guided group than the group randomized to standard guidance (94.7% versus 87.4%, respectively; P=0.033), whereas time (65.2±31.0 versus 60.5±34.0 minutes, P=0.18) and contrast use (209.3±94.1 versus 197.5±89.5 mL, P=0.23) were not significantly different. Stenting rates were similar (49.7% versus 49.5%, P=0.89). Acute gain was greater in the ICUS-guided group than in the standard guidance group (1.85±0.72 versus 1.67±0.76 mm, respectively; P=0.02). Angiographic 6-month analysis revealed no difference in MLD (1.71±0.94 versus 1.57±0.90, P=0.19) or binary restenosis rate (>50% diameter stenosis) (29% versus 35%, P=0.42). Clinical follow-up (602±307 days) showed a significant decrease in clinically driven target lesion revascularization in the ICUS group compared with the standard guidance group (17% versus 29%, respectively; P=0.02).
Conclusions—Although angiographic MLD did not differ significantly after 6 months, ICUS-guided provisional stenting improved 2-year clinical results after intervention.
Key Words: coronary disease • imaging • angioplasty • restenosis • stents
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