Across
- 3. the pen which produces the ECG drawing
- 5. a missed heartbeat
- 6. to check or adjust an instrument before use
- 7. an exercise _____ test (checks how well a patient deals with exercise)
- 8. the flow of electric current
Down
- 1. ____ disturbance (change in chemical composition of body fluids)
- 2. testing for disease before there are symptoms
- 4. the marks produced by an ECG stylus