Related Experiment Videos
Failed coronary stent deployment
W J Cantor1, C Lazzam, E A Cohen
1University of Toronto Interventional Study Group (St Michael's Hospital, the Toronto Hospital, Sunnybrook Health Sciences Center, Toronto, Ontario, Canada.
American Heart Journal
|December 8, 1998
Summary
Coronary stent deployment failure occurs in 8.3% of procedures, leading to significant in-hospital adverse outcomes and high 6-month morbidity. Improved stent designs and deployment strategies are crucial for better patient results.
Area of Science:
- Interventional Cardiology
- Cardiovascular Surgery
- Medical Device Technology
Background:
- Coronary stent deployment failure is an underappreciated complication in clinical practice.
- The incidence and clinical sequelae of failed stent deployment require further investigation.
- Understanding associated factors is key to improving procedural success rates.
Purpose of the Study:
- To determine the incidence of failed coronary stent deployment.
- To describe the clinical consequences of deployment failure.
- To identify clinical and angiographic predictors of stent deployment failure.
Main Methods:
- Retrospective review of 1303 consecutive coronary stenting procedures.
- Definition of failed deployment: failure to deliver or adequately deploy stent at the target lesion.
- Qualitative coronary angiography and clinical record review for all failed deployment cases.
Main Results:
- Failed stent deployment occurred in 108 cases (8.3%), involving 134 stents.
- In-hospital adverse outcomes affected 19% of patients, including urgent coronary artery bypass grafting (16%) and nonfatal myocardial infarction (5%).
- Six-month follow-up revealed adverse clinical outcomes in 39% of patients, including death, myocardial infarction, or repeat target lesion revascularization.
Conclusions:
- Failed coronary stent deployment is a serious complication with substantial morbidity and mortality.
- Current deployment strategies require enhancement to improve procedural success.
- Novel stent designs and improved deployment techniques are necessary to mitigate risks.