Chapter 5
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| pericarditis: | inflammation of the pericardial-sac covering
the heart.
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| 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
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| lead | a configuration of positive and negative sensors, or electrodes, on the body surface that picks up the electrical information from the heart.
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| cable: | one or more insulated wires that connect sensors to an electrocardiograph.
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| stylus: | the needle of the ECG machine that forms a tracing on the graph paper.
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| 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.
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| graph paper: | paper on which the ECG is recorded that is preprinted wi th horizontal lines representing time and vertical lines representing voltage.
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| calibration: | the process of setting a machine to a standardized scale so the results will be comparable and tests can be compared.
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| 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.
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| isoelectric line: | the baseline; a straight line on the ECG recording that represents an absence of electrical activity.
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| ventricular hypertrophy: | enlargement of the ventricle.
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| ground lead: | a lead that is not used to determine electrical activity,but rather as a reference point.
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Or sort by any of the columns using the down arrow next to any column heading.
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