| CRU | cardiac rehabilitation unit; clinical research unit |
|---|---|
| CSGBI | Cardiac Society of Great Britain and Ireland |
| CSICU | cardiac surgical intensive care unit |
| CSN | cardiac sympathetic nerve; carotid sinus nerve |
| CT | calcitonin; calf testis; cardiac tamponade; cardiothoracic [ratio]; carotid tracing; carpal tunnel; ... |