CMA130
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| ECG: | Graphic representation of the electrical activity of the heart
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| SA Node: | Specialized cells that initiates the heart beats, sets its pace and has a rate of 60-100 impulses.
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| AV Node: | Specialize cells located in the lower right atrial septum-has a rate of 40-60 impulses per minute.
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| Bundle of His: | Has an intrinsic rate of 20-40 impulses per minute.
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| Automaticity: | The ability of cardiac cells to generate its own electrical stimulus
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| Conductivity: | Cardiac cells to receive a stimulus from a neighboring cell and pass it to the next.
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| Polarization: | Cardiac cells are in a resting, negatively charged state
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| Depolarization: | Cells are discharging a positively charged electrical impulse to create a contraction
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| Repolarization: | Transformation of cardiac cells from an active to resting state for recharging.
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| P Wave: | Demonstrates atrial depolarization
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| QRS Complex: | Demonstrates ventricular depolarization
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| T Wave: | Demonstartes ventricular repolarization
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| Isoelectric Line: | There is no upward or downward deflection is present indicating no electrical activity or voltage
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| Segment: | Lines between or connecting waves.
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| Interval: | A wave in addition to a connecting line.
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| Large Block (Horizontally) | 0.2 Seconds
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| Large Block (Veritically) | 0.5 Millivolts
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| Unipolar Leads: | Represent 9 out of 12 leads
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| aVR: | Heart voltage between right arm electrode and a central point between left arm and left leg
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| aVL: | Heart voltage between left arm electrode and a central point between right arm and left leg
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| aVF: | Heart voltage between left leg electrode and a central point between right arm and left arm
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| V1: | Electrode is placed at the fourth intercostal space just to the right of the sternum
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| V2: | Electrode is placed at the fourth intercostal space just to the left of the sternum.
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| V4: | Electrode is placed at the left mid-clavicular line in the fifth intercostal space.
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| V3: | Electrode is placed midway between leads V2 and V4.
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| V5: | Electrode is placed anterior left axillary line at the same level as V4.
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| V6: | The electrode is placed at the left mid-axillary line at the same level as lead V4.
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| Artifact: | Defects on the electrocardiogram due to the electrical activity of the heart interferes.
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| Wandering Baseline Artifact: | Caused by loose electrodes.
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| Bipolar Lead: | Measures cardiac electrical activity between two extremities; between a negative and a positive electrode.
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| Lead I: | Measures electrical activity from the right arm to the left arm
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| Lead II: | Used for rhythm lead.
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| Lead III: | Measures electrical activity from left arm to left leg.
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| Somatic Tremor: | Due to involuntary muscle movement aka muscle artifact.
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| Small Block (Horizontally) | 0.04 Seconds
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| Small Block (Vertically) | ?
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