Intravascular ultrasound-guided percutaneous coronary intervention for patients with unprotected left main coronary artery lesions.

Background: In percutaneous coronary intervention (PCI) procedures for patients with unprotected left main coronary artery (ULMCA) lesions, intravascular ultrasonography (IVUS) guidance has shown potential for enhancing clinical outcomes. However, studies confirming its superiority to conventional angiographic-guided PCI remain few. This study aimed to assess if IVUS-guided PCI for patients with unprotected LMCA stenosis improves clinical outcomes compared to angiographic-guided PCI.