: Some hospitals or departments (like DMFMU at the University of Montreal) use "Codex" documents to standardize cardiology protocols and ECG-u guidelines .

: Some clinical codices are available via mobile applications, such as Codex UCI (for intensive care) or Urgens Codex , which requires specific department codes for access.

: These are often 100 to 200-page French-language books designed for rapid review of cardiology and sometimes pneumology.