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the 12-Lead ECG
Chapter 5
| Question | Answer |
|---|---|
| pericarditis: | inflammation of the pericardial-sac covering the heart. |
| sensor: | a disc or tab made of plastic that has a metal component as wel l as a layer or well of gel or conducting substance |
| lead | a configuration of positive and negative sensors, or electrodes, on the body surface that picks up the electrical information from the heart. |
| cable: | one or more insulated wires that connect sensors to an electrocardiograph. |
| stylus: | the needle of the ECG machine that forms a tracing on the graph paper. |
| galvanometer: | a device in the ECG machine which detects electrical currents from a patient and converts it into mechanical energy,which is then recorded onto graph paper. |
| graph paper: | paper on which the ECG is recorded that is preprinted wi th horizontal lines representing time and vertical lines representing voltage. |
| calibration: | the process of setting a machine to a standardized scale so the results will be comparable and tests can be compared. |
| artifact: | additional electrical activity on an ECG tracing as a result of muscle movement, alternating current (AC), or disruption of the cable, rather than the electrical activity of the heart. |
| isoelectric line: | the baseline; a straight line on the ECG recording that represents an absence of electrical activity. |
| ventricular hypertrophy: | enlargement of the ventricle. |
| ground lead: | a lead that is not used to determine electrical activity,but rather as a reference point. |
Created by:
judithhuerta
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