Korean Circ J.  1997 Oct;27(10):971-978. 10.4070/kcj.1997.27.10.971.

"Late Clinical Outcomes of Cordis Tantalum Coronary Stenting without Anticoagulation : Validation of Angiographic Measurement and In-stent Restenosis by Intravascular Ultrasound"

• Hong MK
• Park SW
• Cheong SS
• Lee CW
• Kim YH
• Kim JJ
• Park SJ
• Hong MK
• Mintz GS
• Leon MB

• KMID: 1751218
• DOI: http://doi.org/10.4070/kcj.1997.27.10.971

Abstract

BACKGROUND
The Cordis coronary stent is a flexible, balloon expandable, radiopaque tantalum stent. Previous reports have shown excellent initial clinical outcomes. To our knowledge, there is no report of the long-term clinical outcomes. The intensely radiopaque tantalum may interfere with the angiographic assessment. We intended to evaluate long-term clinical and angiographic restenosis rates after successful implantation of the Cordis tantalum coronary stent. METHOD: Two hundred and eighty-five consecutive patients with 300 lesions were treated with 366 Cordis stents. An angiographic follow-up substudy was performed in 190 lesions ; 6 month follow-up angiograms were available in 167(88%). At follow-up, intravascular ultrasound(IVUS) was performed to (1) determine the pattern of restenosis and (2) to validate the quantitative coronary angiographic(QCA) caliper measurements.
RESULTS
IVUS and QCA caliper measurement of minimal luminal diameter correlated reliably (r=0.767, p<0.001). The QCA analysis detected diffuse in-stent restenosis more reliably than focal in-stent restenosis(p<0.01). The overall angiographic restenosis rate was 19%, The factors affecting angiographic restenosis were post-stent minimum lumen diameter, type C lesion, and reference vessel size.
CONCLUSION
We concluded 1) The angiographic restenosis rate of Cordis stent was comparable to that of other slotted-tube stent. 2) The QCA caliper method is reliable for the assessment of Cordis in-stent restenosis, especially in the detection of diffuse in-stent restenosis. However, QCA may miss focal in-stent restenosis only detectable by IVUS

Keyword

Cordis stent; Restenosis; Coronary artery disease

MeSH Terms

Coronary Artery Disease
Follow-Up Studies
Humans
Phenobarbital
Stents*
Tantalum*
Phenobarbital
Tantalum