| Q-T | in electrocardiography, the time from the beginning of the QRS complex to the end of the T wave [int... |
|---|---|
| QTc | Q-T interval corrected for heart rate |
| Q-Tc | corrected Q-T [interval] |
| RDI | recommended daily intake; respiratory disturbance index; rupture-delivery interval |
| RFI | radiofrequency interference; recurrence-free interval; renal failure index |