| CDZ | chlordiazepoxide; conduction delay zone |
|---|---|
| CSD | carotid sinus denervation; cat scratch disease; combined system disease; conditionally streptomycin ... |
| DCV | distribution of conduction velocities |
| DSACT, D-SACT | direct sinoatrial conduction time |
| EAVC | enhanced atrioventricular conduction |