Study design
Our study began with the formulation of the checklist.The design of the checklist was based on the latest version of the 2020 Chinese Interventional Guidelines, CTO Guidelines, and related literature, combined with the current situation of the department where the work was conducted, to develop a list of nursing tasks before and after CTO interventions in line with clinical reality. The contents of the checklist were subjected to expert correspondence by the Delphi method [