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Author Spotlight: Enhancing Coronary Artery Revascularization
Published on: September 15, 2023
Outcomes in Elderly Patients With Severely Calcified Coronary Lesions Undergoing Orbital Atherectomy
Michael S Lee1, Evan Shlofmitz2, Gentian Lluri1
1UCLA Medical Center, Los Angeles, California.
Insights
Orbital atherectomy is a safe and effective treatment for elderly patients with severe coronary artery calcification (CAC). Outcomes were similar to younger patients, showing comparable rates of major adverse cardiac and cerebrovascular events (MACCE).
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Geriatric Cardiology
Background:
- Percutaneous coronary intervention (PCI) in severe coronary artery calcification (CAC) is linked to poorer outcomes.
- Elderly patients face higher risks and worse outcomes post-PCI due to comorbidities.
- Orbital atherectomy's safety and efficacy in severe CAC are established, but outcomes in the elderly are unknown.
Purpose of the Study:
- To evaluate the clinical outcomes of elderly patients undergoing orbital atherectomy for severe CAC.
- To compare the safety and efficacy of orbital atherectomy in elderly versus younger patients.
Main Methods:
- A cohort study comparing 229 elderly (≥75 years) and 229 younger (<75 years) patients.
- Primary endpoint: 30-day major adverse cardiac and cerebrovascular events (MACCE), including death, myocardial infarction (MI), target vessel revascularization (TVR), and stroke.
- Analysis of angiographic complications and stent thrombosis rates.
Main Results:
- Similar 30-day MACCE rates in elderly and younger groups (2.2% vs. 2.2%, P=1).
- Individual event rates (death, MI, TVR, stroke) were comparable between age groups.
- Low and similar rates of angiographic complications and stent thrombosis observed in both elderly and younger cohorts.
Conclusions:
- Orbital atherectomy is a safe and effective strategy for elderly patients with severe CAC.
- Clinical outcomes in elderly patients treated with orbital atherectomy mirror those of younger patients.
- Further clarification of orbital atherectomy's role in the elderly is warranted via randomized trials.
Objectives:
We evaluated the clinical outcomes of elderly patients who underwent orbital atherectomy for the treatment of severe coronary artery calcification (CAC) prior to stenting.
Background:
Percutaneous coronary intervention (PCI) of severe CAC is associated with worse clinical outcomes including death, myocardial infarction (MI), and target vessel revascularization (TVR). The elderly represents a high-risk group of patients, often have more comorbid conditions, and have worse outcomes after PCI compared to younger patients. Clinical trials and a large multicenter registry have demonstrated the safety and efficacy of orbital atherectomy for the treatment of severe CAC. Clinical outcomes of elderly patients who undergo orbital atherectomy are unknown.
Methods:
Of the 458 patients, 229 were ≥75 years old (elderly) and 229 were <75 years old (younger). The primary endpoint was rate of 30-day major adverse cardiac and cerebrovascular events (MACCE), comprised of cardiac death, MI, TVR, and stroke.
Results:
The primary endpoint was similar in the elderly and younger groups (2.2% vs. 2.2%, P = 1), as were the individual endpoints of death (2.2% vs. 0.4%, P = 0.1), MI (0.9% vs. 1.3%, P = 0.65), TVR (0% vs. 0%, P = 1), and stroke (0% vs. 0.4%, P = 0.32). The rates of angiographic complications and stent thrombosis were similarly low in both groups.
Conclusions:
The elderly represented a sizeable number of patients who underwent orbital atherectomy. It is a safe and effective treatment strategy for elderly patients with severe CAC as the clinical outcomes were similar to their younger counterparts. A randomized trial should further clarify the role of orbital atherectomy in these patients.
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