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EKG |
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| Region | |
| P Wave | Atrial depolarization |
| QRS Wave | Ventricular depolarization. |
| T Wave | Ventricular repolarization |
| PR Segment | Time from the beginning of atrial depolarization to the beginning of ventricular depolarization. |
| ST Segment | Time during which the entire ventricle is depolarized. |
| QT Segment | Time from the beginning of ventricular depolarization to the end of ventricular repolarization. |
