| PI | first meiotic prophase; isoelectric point; pacing impulse; package insert; pancreatic insufficiency;... |
|---|---|
| P-R | the time between the P wave and the beginning of the QRS complex in electrocardiography [interval] |
| QRS | in electrocardiography, the complex consisting of Q, R, and S waves, corresponding to depolarization... |
| 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 |