Term
| - Alternating Current Interference |
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Definition
| AKA AC Interference. Electrical interference that appears as small, uniform spikes on ECG tracing. |
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Term
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Definition
| Device on the electrocardiograph that magnifies or enlarges the heart’s electrical impulses so they can be recorded. |
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Term
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Definition
| Any deviation from “normal” on the ECG tracing originating from the patient’s heart. Abnormal heart rate, rhythm, & conduction system. |
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Term
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Definition
| Unwanted changes or interferences in an ECG tracing caused by movement, machine malfunction, or other factors. |
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Term
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Definition
| AKA Unipolar Leads. Leads that measure cardiac activity from one electrode on the body at a time; recordings are augmented (made larger) so they can be read. The aVR, aVL, and aVF are referred to as this collectively. |
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Term
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Definition
| AKA Atrioventricular Node. Knot of specialized cells in the lower portion of the right atrium that produces the heart’s electrical impulses. Will take over electrical impulse stimulation if the SA Node is unable to do so. |
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Term
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Definition
| AKA Isoelectric Line. Flat, horizontal line that separates the various cardiac waves; representative of the space between heartbeats while the heart is “resting”. |
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Term
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Definition
| Slow heart rate with pulse rate of less than 60 BPM. |
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Definition
| Small band of atypical cardiac muscle fibers that receive electrical impulses from the AV node. |
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Term
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Definition
| One heartbeat. One contraction/relaxation phase of the heart. |
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Term
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Definition
| AKA Treadmill Test. Is an exercise tolerance test. |
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Term
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Definition
| AKA ECG. Graphic picture/recording of the heart’s electrical activity. Are usually recorded with the ECG paper moving at the speed of 25 mm/second. |
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Term
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Definition
| Machine that records the electrical activity of the heart. |
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Term
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Definition
| AKA Sensors. Devices made of conductive material to pick up the electrical activity of the heart. |
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Term
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Definition
| ECG pattern that shows the length of a wave with a segment. |
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Term
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Definition
| Poor blood supply to body tissue causing a lack of oxygen to that tissue. |
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Term
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Definition
| AKA Ml. Commonly known as a Heart Attack. Death of heart tissue caused by blockage of the heart’s blood vessels. |
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Term
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Definition
| AKA NSR. Rhythm measurement that starts at the SA Node, occurs within an established time frame, and follows an expected, established pattern. Refers to when an ECG is within normal limits. |
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Term
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Definition
| Device that delivers electrical impulses to the heart muscle when the SA node is unable to do so. |
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Term
| - Premature Atrial Contraction |
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Definition
| AKA PAC. Condition in which an electrical impulse in the atria starts before the next expected heartbeat. |
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Term
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Definition
| Cardiac fibers that receive impulses from the bundle branches & take them throughout the heart muscle. |
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Term
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Definition
| AKA Sinoatrial Node. Pacemaker of the heart; knot of specialized cells located in the upper right atrium. |
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Term
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Definition
| ECG pattern between two waves. |
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Term
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Definition
| Heated device that records the heart’s activity on heat-sensitive graph paper. |
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Term
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Definition
| Fast heart rate with pulse rate above 100 BPM. |
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Term
| - Ventricular Tachycardia |
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Definition
| AKA V Tach. Three or more consecutive PVCs (Premature Ventricular Contractions) with heart rate exceeding 100 BPM. |
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Term
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Definition
| Normal, small upward curve that occasionally follows a complete ECG after the PQRST; has unknown indication. |
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Term
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Definition
| Shift on the ECG tracing from the baseline or center of the paper. |
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