Term
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Definition
| charge transfer through the body fluids as a result of cardiac AP |
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Term
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Definition
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Term
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Definition
| onset of atrial depolarization to the onset of ventricular depolarization |
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Term
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Definition
| ventricular depolarization |
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Term
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Definition
| early ventricular repolarization |
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Term
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Definition
| ventricular repolarization |
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Term
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Definition
| ventricular depolarization and repolarization |
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Term
| each small box in ECG is how much time? |
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Definition
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Term
| describe bi-phastic deflection |
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Definition
| movement of an electrical impulse perpendicular to a line between the positive and negative electrodes result in a bi-phasic (part upright and part downward) deflection or no deflection |
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Term
| what is considered in a 6limb lead and 6 precordial leads of the 12 lead system? |
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Definition
- 6 limb leads (frontal plane)
- 3 standard bipolar leads I,II,III
- 3 augmented unipolar leads: aVR, aVF, aVL
- 6 precordial leads (transverse)
- 6 unipolar leads: V1,V2,V3,V4,V5,V6
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Term
| describe unipolar leads of augmented limb leads |
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Definition
- unipolar leads
- positive electrode is at the RA, LA, or LL, depending on lead
- negative electrode is the average potential between the other 2 limb electrodes
- a=augmented
- v=vector
- R=right arm
- L=left arm
- F=left foot
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Term
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Definition
| 4th intercostal space at right margin of the sternum |
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Term
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Definition
| 4th intercostal space at the left margin of the sternum |
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Term
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Definition
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Term
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Definition
| 5th intercostal space at the junction of the left midclavicular line |
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Term
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Definition
| horizontal to V4, anterior to axillary line |
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Term
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Definition
| horizontal to V4, left midaxillary line |
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