| CHB | chronic hepatitis B; complete heart block; congenital heart block |
|---|---|
| CHF | chick embryo fibroblast; chronic heart failure; congenital hepatic fibrosis; congestive heart failur... |
| FHT | fast Hartley transform; fetal heart; fetal heart tone |
| MHR | major histocompatibility region; malignant hyperthermia resistance; maternal heart rate; maximal hea... |
| A2 | Aortic Component of the Second Heart Sound(S2) |