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Orbital and rotational atherectomy during percutaneous coronary intervention for coronary artery calcification
Michael S Lee1, Jonathan S Gordin1, Gregg W Stone2
1Division of Cardiology, David Geffen School of Medicine at UCLA, Los Angeles, California.
Insights
Severe coronary artery calcification (CAC) complicates procedures like stenting. Atherectomy, using rotational or orbital devices, helps prepare vessels, but more research is needed to confirm long-term benefits and compare techniques.
Area of Science:
- Interventional Cardiology
- Cardiovascular Research
- Medical Device Technology
Background:
- Severe coronary artery calcification (CAC) significantly complicates percutaneous coronary intervention (PCI).
- Calcified plaque hinders optimal stent expansion, increasing risks of adverse cardiovascular events.
- Coronary atherectomy aims to modify calcified lesions, facilitating PCI.
Purpose of the Study:
- To review the role and efficacy of rotational and orbital atherectomy in managing CAC.
- To compare the available literature on the safety and effectiveness of these atherectomy systems.
- To identify gaps in current knowledge and suggest future research directions.
Main Methods:
- Literature review of studies on rotational and orbital atherectomy for CAC.
- Analysis of procedural success rates and safety profiles of different atherectomy devices.
- Evaluation of evidence regarding the impact of atherectomy on long-term clinical outcomes.
Main Results:
- Both rotational and orbital atherectomy demonstrate procedural success in facilitating stent delivery and expansion.
- Current literature suggests similar efficacy and safety profiles for both systems, though head-to-head comparisons are limited.
- No atherectomy system has definitively proven to reduce long-term major adverse cardiovascular events.
Conclusions:
- Atherectomy is a valuable tool for preparing calcified lesions to enable successful PCI.
- Further prospective trials are necessary to compare rotational and orbital atherectomy directly.
- Identifying specific patient populations who benefit most from atherectomy requires additional investigation.
Abstract:
Severe coronary artery calcification (CAC) increases the complexity of percutaneous coronary intervention (PCI) by inhibiting optimal stent expansion, leading to an increased risk of death, myocardial infarction, repeat revascularization, and stent thrombosis. Coronary atherectomy modifies and debulks calcified plaque to facilitate PCI. Although there is no clear consensus, and further studies are needed, the decision to perform atherectomy should be based upon the presence of fluoroscopic CAC or with the use of intravascular imaging. The management of CAC in the modern era relies on rotational and orbital atherectomy to prepare the lesion to facilitate stent delivery and optimal expansion. While the two technologies differ in equipment, technique, and mechanism of action, the available literature suggests similar efficacy and safety of the two systems, although head-to-head comparisons are limited. While rotational and orbital atherectomy have been shown to have excellent procedural success in terms of facilitating stent delivery, no system has been shown to reduce long-term major adverse cardiovascular events, although the definitive trial for orbital atherectomy has not been completed. Additional trials are needed to find the population who would derive the most benefit of atherectomy and to compare the two systems in a prospective manner.
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