| A | B |
|---|
| P wave | atrial depolarization |
| QRS complex | ventricle depolarization |
| T wave | ventricular repolarization |
| U wave | late ventricular repolarization |
| PR interval | time it takes for impulse to move through atria to the AV junction |
| PR segment | pause at the AV node |
| QT interval | complete ventricle cycle depolarization through repolarization |
| 1 small box horizontally | 0.04 seconds or 40 milliseconds |
| 1 large box horizontally | 0.20 seconds or 200 milliseconds |
| 1 small box vertically | 0.1 millivolts |
| 2 large boxes vertically | 1 millivolt |
| always has a p wave associated with qrs complex | sinus rhythm |
| sinus rhythm greater than 100 | tachycardia |
| sinus rhythm less than 60 | bradycardia |
| junctional rhythm greater than 60 | accelerated junctional |
| QRS complex greater than 0.12 sec | ventricular rhythmn |
| missing or inverted pwaves with QRS less than 0.12 sec | junctional rhythm |
| pacer spike occurs before p wave | atrial pacemaker |
| pacer spike occurs before qrs wave | ventricular pacemaker |
| junctional rhythm less than 40 | junctional bradycardia |
| Einthoven's triangle leads | I II III |
| Augmented Limb leads | aVL aVR aVF |
| leads that view Anterior heart | V1 V2 V3 V4 |
| leads that view inferior heart | II III aVF |
| leads that view left lateral high | I aVL |
| leads that view left lateral low | V5 V6 |
| ST depression | cardiac ischemia |
| ST elevation | myocardial infarction or injury |
| most common site to take adult pulse | radial |
| most common site to take infant pulse | brachial |
| normal adult heart rate | 60-100 |
| normal infant heart rate | 100-160 |
| extreme sweating | diaphoresis |
| normal adult respiratory rate | 12-20 |
| fainting | syncope |
| blue tinged skin | cyanosis |
| outpatient cardiac test done over time | holter monitor |
| in patient cardiac test done over time | telemetry |
| placement for V1 | right 4th intercostal space |
| placement for V2 | left 4th intercostal space |
| placement for V3 | left 5th intercostal space between V2 and V4 |
| placement for V4 | left 5th ICS midclavicular line |
| placement for V5 | left 5th ICS anterior axillary line |
| placement for V6 | left 5th ICS midaxillary line |
| placement for V8 | left 5th ICS midscapulary line |
| placement for RV4 | right 5th ICS midclavicular line |
| ground lead for limb leads | right leg |
| law that protects privacy | HIPAA |
| placement of the white lead wire | right arm |
| placement of the black lead wire | left arm |
