| AVND | atrioventricular node dysfunction |
|---|---|
| AVNFRP | atrioventricular node functional refractory period |
| AVNRT | atrioventricular node reentry tachycardia |
| BLN | bronchial lymph node |
| BN | bladder neck; branchial neuritis; bronchial node; brown Norway [rat]; bulimia nervosa |