Coronary artery stenting outcomes
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Immediate and Short-Term Outcomes of Coronary Artery Stenting
Coronary artery stenting, especially for left main coronary artery (LMCA) disease, has shown excellent immediate procedural success rates, often reaching 100% in elective cases. Early mortality rates are low, particularly in patients who are good candidates for coronary artery bypass grafting (CABG), and the need for urgent revascularization within the first month is relatively uncommon. However, elderly patients and those with complex disease or comorbidities may experience higher rates of procedural complications, including myocardial infarction, emergency CABG, and death, compared to younger or lower-risk patients Silvestri2000Gregorio1998.
Medium- and Long-Term Outcomes: Stenting vs. CABG
Several randomized trials and meta-analyses have compared the long-term outcomes of stenting (percutaneous coronary intervention, PCI) and CABG for unprotected LMCA disease. Over 5 to 10 years, both strategies show similar rates of all-cause mortality, myocardial infarction, and stroke. However, stenting is associated with a higher rate of repeat revascularization compared to CABG, especially beyond the first year. Major adverse cardiac and cerebrovascular events (MACCE) rates are also similar between the two approaches in the long term, though there may be a trend toward more MACCE with stenting as time progresses Buszman2016Ahn2015Park2020+1 MORE.
Drug-Eluting Stents: Long-Term Safety and Efficacy
Comparisons between different types of drug-eluting stents (DES), such as polymer-free versus durable polymer DES, reveal no significant differences in long-term outcomes, including cardiac death, myocardial infarction, target lesion revascularization, or stent thrombosis. Both types of DES demonstrate low rates of stent thrombosis over 10 years, but overall adverse event rates remain high, reflecting the complexity of the patient population .
Special Populations and Lesion Characteristics
- Elderly Patients: Elderly individuals (≥75 years) undergoing stenting have higher rates of procedural complications and restenosis compared to younger patients. Their 12-month survival is high, but event-free survival is lower, especially in those with unstable angina, prior MI, low ejection fraction, multivessel disease, or complex lesions .
- Sex Differences: Outcomes after stenting or CABG for left main disease do not differ significantly between men and women after adjusting for baseline characteristics. However, women may have a trend toward worse outcomes after PCI, likely due to higher comorbidity and periprocedural complications .
- Vessel Tortuosity: Stenting in vessels with moderate or severe tortuosity is associated with higher rates of target vessel failure, myocardial infarction, and need for repeat revascularization at both 30 days and 5 years .
- Iatrogenic Dissection: Bailout stenting for guide catheter-induced coronary artery dissection has acceptable immediate and long-term outcomes. Drug-eluting stents may reduce restenosis in stenotic lesions, but dissection recurrence can occur after DES implantation .
Conclusion
Coronary artery stenting provides excellent immediate and good medium- to long-term outcomes for many patients, including those with left main coronary artery disease. While stenting and CABG offer similar long-term survival and rates of major adverse events, stenting is associated with a higher need for repeat revascularization over time. Outcomes can vary based on patient age, comorbidities, lesion complexity, and vessel characteristics. Both stenting and CABG remain viable options, with the choice tailored to individual patient risk profiles and preferences Silvestri2000Buszman2016Gregorio1998+7 MORE.
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