EKG certification Certification EKG Equipment & Artifact Troubleshooting 1

Question 1

What is the standard paper speed used for a resting 12-lead EKG in the United States?

Accepted Answer

25 mm/sec

Answer

15 mm/sec

Answer

50 mm/sec

Answer

10 mm/sec

Question 2

Which artifact pattern on an EKG is most commonly caused by AC (alternating current) electrical interference?

Accepted Answer

60-cycle interference producing a thick, fuzzy baseline

Answer

Wandering baseline

Answer

Muscle tremor artifact

Answer

Intermittent signal dropout

Question 3

What is the standard sensitivity setting on most EKG machines?

Accepted Answer

10 mm/mV

Answer

5 mm/mV

Answer

20 mm/mV

Answer

1 mm/mV

Question 4

A wandering baseline artifact on an EKG is most likely caused by:

Accepted Answer

Electrode movement or poor skin preparation

Answer

Improper machine calibration

Answer

60 Hz electrical interference

Answer

Incorrect lead placement

Question 5

Which of the following best describes the purpose of EKG machine calibration?

Accepted Answer

To ensure the machine records a 1 mV signal as exactly 10 mm deflection

Answer

To adjust the paper speed

Answer

To set the filter frequency

Answer

To reset the patient data

Question 6

Muscle tremor artifact on an EKG most closely resembles which rhythm disturbance?

Accepted Answer

Ventricular fibrillation

Answer

Atrial flutter

Answer

Atrial fibrillation

Answer

Supraventricular tachycardia