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Preliminary experience with the NIR coronary stent

H Zheng1, T Corcos, X Favereau

  • 1Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing.

Catheterization and Cardiovascular Diagnosis
|March 6, 1998
PubMed
Summary
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The NIR coronary stent demonstrated high success rates in treating complex coronary lesions. This study highlights its safety and effectiveness, even in high-risk patients, with low rates of complications like thrombosis and restenosis.

Area of Science:

  • Interventional Cardiology
  • Cardiovascular Devices

Background:

  • Coronary artery disease remains a leading cause of mortality worldwide.
  • Percutaneous coronary intervention (PCI) with stenting is a primary treatment modality.
  • Unfavorable lesion characteristics pose challenges in achieving optimal PCI outcomes.

Purpose of the Study:

  • To evaluate the safety and efficacy of the NIR coronary stent.
  • To assess stent performance in patients with complex coronary lesions.
  • To determine the rates of procedural success, adverse events, and restenosis.

Main Methods:

  • Prospective study of 223 patients (288 lesions) undergoing NIR stent implantation.
  • Inclusion of lesions with unfavorable characteristics (type B2 or C).
  • Assessment of primary success, procedural complications, and clinical outcomes including restenosis.

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Main Results:

  • High primary stent deployment success rate (98.6%).
  • Low subacute thrombosis rate (0.4%) and no Q-wave myocardial infarction.
  • Significant improvement in luminal diameter (0.62 to 2.69 mm) and reduction in stenosis (78.3% to 12.7%).
  • Clinical restenosis rate of 9.6% at follow-up.

Conclusions:

  • The NIR coronary stent shows favorable performance characteristics.
  • The stent is safe and efficacious for treating coronary lesions, including those with high-risk features.
  • Results support the use of NIR stents in complex coronary interventions.