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Micro stent, quantitative coronary angiography, and procedural results
D Tresukosol1, M J Schalij, L H Savalle
1Department of Cardiology, University Hospital Leiden, The Netherlands.
Catheterization and Cardiovascular Diagnosis
|June 1, 1996
Summary
The Micro stent (MS) shows promising initial results for coronary artery stenosis, achieving high success rates with minimal complications. Further data on restenosis rates are needed for this intracoronary stent.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Biomedical Engineering
Background:
- Coronary artery disease necessitates effective revascularization strategies.
- Intracoronary stents improve outcomes following percutaneous transluminal coronary angioplasty (PTCA).
- The Micro stent (MS) is a balloon-expandable stainless steel stent designed for intracoronary use.
Purpose of the Study:
- To evaluate the initial safety and efficacy of the Micro stent (MS) in patients undergoing coronary interventions.
- To assess angiographic outcomes, including minimal luminal diameter and diameter stenosis, after MS implantation.
- To determine the procedural success rate and identify major clinical events associated with MS implantation.
Main Methods:
- A prospective study involving the implantation of 127 Micro stents in 85 patients between August 1994 and March 1995.
- Patients received either elective PTCA or PTCA for acute myocardial infarction.
- Angiographic success was defined as < 30% residual stenosis, assessed by computer-assisted quantitative coronary arteriography.
Main Results:
- Angiographic success was achieved in 98% of cases (124/127 stents).
- Mean minimal luminal diameter significantly increased from 0.88 mm to 3.08 mm (P < 0.001).
- Procedural success rate was 84%, with major adverse events including death (1%), stroke (1%), and subacute stent closure (6%).
Conclusions:
- Micro stent implantation demonstrates promising initial angiographic and procedural success rates.
- The majority of patients (59%) did not require anticoagulant therapy post-procedure, with few observed vascular and bleeding complications.
- Long-term data regarding restenosis rates after Micro stent implantation are not yet available.