| CLBBB | complete left bundle branch block |
|---|---|
| CRBBB | complete right bundle branch block |
| DNB | dinitrobenzene; Diplomate of the National Board [of Medical Examiners]; dorsal nonadrenergic bundle |
| GB | gallbladder; glial bundle; goof balls; Guillain-Barre [syndrome] |
| HB | health board; heart block; heel to buttock; held back; hemoglobin; hepatitis B; His bundle; hold bre... |