The Importance of Intravascular Imaging in Coronary Stenting
By Sarah Smith, Cardiology Correspondent, Health Today
In a recent study, intravascular imaging-guided coronary stenting has been linked to improved survival rates and a decrease in myocardial infarction (MI) compared to traditional angiography, marking a significant breakthrough in the field.
Patients undergoing percutaneous coronary intervention (PCI) with contemporary stents and guided by optical coherence tomography (OCT) or intravascular ultrasound (IVUS) experienced a reduction in target lesion failure and its various components, including cardiac death, target vessel MI, and target lesion revascularization. These imaging modalities also showed a decrease in stent thrombosis, all MI, and all-cause death over a 24.7-month follow-up period.
The findings point to the enhanced safety and efficacy of PCI when guided by intravascular imaging compared to angiography alone. This is a significant improvement over drug-eluting stents (DES), which do not reduce mortality, MI, or stent thrombosis compared to bare-metal stents. Despite older evidence supporting the benefits of IVUS and OCT in reducing composite cardiac events and repeat revascularization, they currently receive a weaker endorsement in coronary revascularization guidelines.
The study authors emphasize the potential for substantial improvements in event-free survival by utilizing drug-eluting stents with intravascular imaging guidance. They call for greater adoption of IVUS and OCT in everyday clinical practice, highlighting the need to address training and reimbursement barriers to their routine use.
Experts from Aberdeen Royal Infirmary in Scotland echo the call for wider integration of intravascular imaging in PCI procedures, questioning why these advanced imaging techniques are not currently more widely utilized given their proven benefits. They advocate for upgrading the recommendation of intravascular imaging in future guidelines to a class I level based on the demonstrated safety and efficacy advantages highlighted in the meta-analysis.
This study underscores the importance of intravascular imaging in optimizing outcomes for patients undergoing coronary stenting, paving the way for further advancements in the field of interventional cardiology.