Comparison of PROVISIONal 1-stent Strategy with Drug-Eluting Balloon Versus Planned 2-stent Strategy in Patients with Non-LM Coronary True-Bifurcation Lesions.
\[The Purpose of the Clinical Study\] The purpose of this randomized comparison study is to compare the 1-stent strategy with a drug-eluting balloon and the 2-stent strategy in patients with non-LM coronary true-bifurcation lesions. \[Hypothesis\] In this study, the researchers intend to verify the hypothesis that the 1-stent strategy with a drug-eluting balloon is non-inferior to the 2-stent strategy in terms of target lesion failures (cardiac death, target vessel MI, or target vessel revascularization).
• ① 19+ years old
• ② Patients with the following lesions and clinical factors. 2-1. The lesion factor: Visually confirmed diameter of the 2.25-2.75 mm in branched vessels, where the main blood vessel's diameter is at least 2.5 mm; the lesion at the branched vessels is of a Medina classification (1,1,1), (1,0,1), or (0,1,1), with a true bifurcation; a de novo lesion.
• 2-2 Clinical factors: Stable angina pectoris, unstable angina pectoris, or myocardial infarction with an elevated non-ST segment, all at least 24 hours after their last treatment.
• ③ Patients who understood the definitions of the test group and the control group and the risks involved in the treatment, and with voluntary, informed consent to participate in the study, as provided either by the patient or their legal representatives.