1. The document discusses the basics of percutaneous coronary intervention (PCI) through the transradial approach. It covers the history, access routes, procedural steps, guide catheter selection, complications and tips for successful PCI. 2. Key points include that the radial approach has a narrow pathway but fewer complications compared to the femoral approach. Guide catheter size selection depends on the vessel diameter and intended devices. Wiring, balloon angioplasty, stenting and post-dilatation are the standard steps of PCI. 3. Complications include dissection, perforation and stent malapposition. Tips provided to prevent complications and ensure procedural success include proper guide catheter and device selection, gentle manipulation, and frequent