| RBBB | right bundle-branch block |
|---|---|
| RBBsB | right bundle-branch system block |
| RDLBBB | rate-dependent left bundle-branch block |
| CHB | chronic hepatitis B; complete heart block; congenital heart block |
| BB | bad breath; bed bath; beta blockade, beta blocker; BioBreeding [rat]; blanket bath; blood bank; bloo... |