ECG ECG Equipment and Maintenance

Question 1

What is the standard paper speed used for ECG recordings in the United States?

Accepted Answer

25 mm/sec

Answer

15 mm/sec

Answer

50 mm/sec

Answer

100 mm/sec

Question 2

What voltage does each large square on ECG paper represent at standard calibration?

Accepted Answer

1 mV

Answer

0.5 mV

Answer

2 mV

Answer

5 mV

Question 3

How often should ECG electrodes be replaced to ensure optimal signal quality?

Accepted Answer

Per patient use (single-use)

Answer

Every week

Answer

Every month

Answer

Every 6 months

Question 4

What is the function of the galvanometer in an ECG machine?

Accepted Answer

Measures and records voltage differences

Answer

Amplifies electrical signals

Answer

Filters artifact

Answer

Stores patient data

Question 5

Which filter setting on an ECG machine is used to reduce muscle artifact?

Accepted Answer

Low-pass filter

Answer

High-pass filter

Answer

Notch filter

Answer

Band-pass filter

Question 6

What does the calibration pulse at the beginning of an ECG strip verify?

Accepted Answer

1 mV standardization mark

Answer

Paper speed

Answer

Correct lead placement

Answer

Battery level