| HMO | health maintenance organization; heart minute output |
|---|---|
| HR | heart rate; hemorrhagic retinopathy; high resolution; higher rate; histamine receptor; hormonal resp... |
| HRA | health record analyst; health risk appraisal; heart rate audiometry; hereditary renal adysplasia; hi... |
| HRF | heart rate fluctuations |
| HRR | head rotation to the right; heart rate range |