The Guiding Value of Ultrasound and Radial Arteriography in the Selection of Sheath Size for Transradial Coronary Intervention

Senior interventional doctors interpret the CAG results and group according to their clinical experience: (1) No PCI is required, only diagnostic CAG is required, which is group ①6F sheath CAG group; (2) PCI is required, simple lesions are group ②6F sheath PCI group, the 6F sheath is still used for PCI; (3) PCI is required for the complicated disease and use 7F sheath, as the 7F sheath PCI group is the group ③, and the 7F sheath is replaced for PCI.