ECG/Heart

4. Exercise electrocardiography that is done to determine if the heart is receiving enough blood during exercise; also called a cardiac stress test
8. ECG pattern that shows the length of a wave with a segment
10. Life threatening condition of ventricular twitching that causes ineffective pumping action, stopping blood circulation
11. Representative of the space between heartbeats when the heart is resting
13. Leads that measure in only one direction
14. Slow heart rate, less than 60 beats per minute
16. Devices made of a conductive material to pick up the electrical activity of the heart
17. Heart attack
18. Standard limb leads
19. Sinoatrial(SA) node of the heart; device that delivers electrical impulses to the heart muscle when the SA node is unable to do so
20. Body tremor caused by voluntary or involuntary muscle movement
21. Ambulatory heart monitor that records heart activity during a 24 to 48 hour period

1. Covered wires that carry electrical impulses from the sensors to the ECG machine
2. Unwanted changes in ECG tracing caused by movement, machine malfunction, or other factors
3. Three or more consecutive PVC's with heart rate exceeding 100 beats per minute
5. Rapid heart rate, 100-180 beats per minute
6. Atrioventricular bundle; small band of atypical cardiac muscle fibers that receive electrical impulses from the AV node
7. Shift on the ECG tracing from the baseline or center of the paper
9. Abnormal heart rate, rhythm, and conduction system; also called dysrhythmia
12. Recording of cardiac cycles; graphic picture of the heart's electrical activity
15. Deficiency of a blood supply to tissue because of obstruction