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EKG
Review for EKG test
| Question | Answer |
|---|---|
| Another name for the baseline | Iso Electric Line |
| Any deflection off the baseline is called a | wave |
| The distance between two waves | segment |
| the length of a wave and a segment | interval |
| heat and pressure sensitive | EKG paper |
| Normal paper speed | 25mm/sec |
| Normal standarization | 10mm, 0.2 sec |
| vertical plane represents | voltage |
| horizontal plane represents | time |
| how much time in one small square? | .04 secs |
| how much time in one large square? | 0.2 secs |
| time period when the myocardial cell cannot respond to stimulus | Refraction Period |
| ability of the myocardial cell to depolarize and polarize | Action Potential |
| part of EKG machine converts electrical activity into mechanical motion | Galvonometer |
| the writing implement on EKG machine | stylus |
| wave = Atrial depolarization | P wave |
| wave= Ventricular depolarization | QRS Complex |
| wave= Ventricular repolarization | T Wave |
| SA Node inherent rate | 60-100bpm |
| AV Node inherent rate | 40-60bpm |
| Purkinje Fibers inherent rate | 20-40 bpm |
| on all sinus EKG's, the initiation of the impulse is | SA Node |
| Normal value of PR Interval | 0.12-0.20 |
| Wave not usually seen on EKG indicates electrolyte imbalance | U wave |
| how many waves are in one cardiac cycle? | 5 |
| 1 heart beat- 1 systole + 1 diastole | 1 cardiac cycle |
| two or more waves together | "QRS" complex |
| Electrocardiogram is used to | diagnose arrhythmia, ischemia, electrolyte imbalances and myocardial injury |
| the Amplifyer in EKG machine | increases voltage or intensity of weaker signal |
| how many leads on EKG | 12 |
| how many electrodes | 10 |
| Limb Leads, 3 standard augmented | AVR, AVL, AVF |
| how many chest leads? | 6 |
| Place V1 | 4ICS R margin of sternum |
| place V2 | 4ICS L margin of sternum |
| place V3 | midway between V2 & V4 |
| place V4 | 5ICS @ mid-clavicular line |
| place V5 | 5ICS @ left anterior Axillary line |
| Place V6 | 5ICS @ mid Axillary line |
| Lead I | records V between RA & LA |
| Lead II | voltage between RA & LL |
| Lead III | voltage between LA & LL |
| RL | ground wire reference point |
| V1 is | red |
| V2 | yellow |
| V3 | green |
| V4 | blue |
| V5 | orange |
| V6 | purple |
| Limb Leads colors | white, green, black, red |
| RA | white |
| LL | red |
| LA | black |
| RL | green |
| another name for standard leads | bipolar |
| another name for augmented leads | unipolar |
| another name for chest leads | precordial |
| direction of electrical impulses | vector |
| 3 augmented leads | avl, avf, avr |
| standard limb leads | lead I,II, III |
| chest leads | V1-V6 |
| lead records act f/mdpt b/w LA/LL | AVR |
Created by:
Gmtassa23
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