| A | B |
|---|
| PFT | evaluate a patients lung capacity and volume |
| SA node | pacemaker of the heart |
| EKG/ECG | waves traced of the heart's electrical impulse |
| deflections | peaks and valleys (waves) |
| P wave | when SA node fires |
| QRS complex | contraction of ventricles |
| T wave | recovery or repolarization |
| V leads | Chest leads |
| aVR, aVL, aVF | Limb leads |
| artifacts | caused by improper technique, poor conduction |
| Wandering baseline | caused by stylus not being warmed |
| Flat line | caused by detached/loose wire |
| Somatic interference | caused by muscle movement |
| AC interference | caused by electrical current from another piece of equipment |
| arrythmia | irregular heartbeat |
