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chapter 12
terminology
| Question | Answer |
|---|---|
| amplitude | refers to amount, extent, size, abundance, or fullness |
| artifact | additional electrical activity picked up by the electrocardiograph that interfers with the normal appearance of the ECG cycles |
| atherosclerosis | buildup of fibrous plaques of fatty deposit and cholesterol on the inner walls of the coronary arteries |
| baseline | the flat horizontal line that seperates the various waves of the ECG cycle |
| cardiac cycle | one complete heartbeat |
| dysrhythmia | an irregular heart rhythm also termed arrythmia |
| ECG cycle | the graphic represention of a heartbeat |
| electrocardiogram (ECG) | the graphic representation of the electrical activity of the heart |
| electrocardiograph | the instrument used to record the electrical activity of the heart |
| electrode | a conductor of electricity which is uded to promote contact between the body and the electrocardiograph |
| electrolyte | a chemical substance that promotes conduction of an electrical current |
| interval | the length of a wave or the length of a wave with a segment |
| ischemia | deficiency of blood in a body part |
| normal sinus rhythm | refers to an ECG that is within normal limits |
| segment | the portion of the ECG between two waves. |
| spirometer | an instrument for measuring air taken into and expelled from the lungs |
| spirometry | measurement of an individuals breathing capacity by means of a spirometer |