Comparison of Drug-coated Balloon and Drug-eluting Stent for Severe Calcification of de Novo Lesion in Elderly Coronary Heart Disease
The goal of this clinical trial was to compare the effectiveness of drug balloons versus drug-coated stents in calcified lesions in elderly coronary artery disease. The main question it aims to answer is whether the application of DCB is non-inferior to DES for in situ large vessel calcified lesions in the elderly coronary arteries. And to develop a method to precisely identify the nature and extent of calcified lesions and to rationalize the choice of pretreatment.
• 1\. older than 60 years of age.
• 2\. meeting the indications for coronary intervention.
• 3\. IVUS examination suggests severe calcified lesions (calcification angle \> 270° at the target lesion) or OCT examination suggests severe calcified lesions (calcification angle \> 180° and/or length \> 5 mm and/or thickness \> 0.5 mm);
• 4\. Target lesion vessel diameter \> 2.5 mm