CCT Artifact Recognition and Troubleshooting 2

Question 1

Dried or insufficient electrode gel is most likely to cause:

Accepted Answer

Increased skin-electrode impedance and poor signal quality

Answer

Dried electrode gel increases skin-electrode impedance, leading to poor signal quality, increased artifact, and unreliable tracings.

Question 2

Reversal of the left arm (LA) and right arm (RA) electrodes would most likely produce:

Accepted Answer

Inverted P wave and negative QRS in lead I with swapped leads II and III

Answer

Swapping LA and RA reverses the polarity of lead I, causing inverted P waves and QRS in lead I, and effectively swaps leads II and III.

Question 3

Intermittent baseline wander that correlates with the respiratory cycle is best corrected by:

Accepted Answer

Checking and improving electrode-skin contact and adhesion

Answer

Respiratory baseline wander is typically caused by poor electrode-skin contact; improving skin preparation and electrode adhesion resolves the artifact.

Question 4

A patient with Parkinson's disease undergoing an ECG is most likely to exhibit which type of artifact?

Accepted Answer

Somatic tremor artifact due to involuntary muscle movement

Answer

Parkinson's disease causes involuntary resting tremors that appear as somatic tremor artifact on the ECG tracing.

Question 5

Which of the following BEST describes the appearance of somatic tremor artifact on an ECG?

Accepted Answer

Irregular, variable oscillations that can obscure the baseline and waveforms

Answer

Somatic tremor produces irregular, variable oscillations arising from muscle electrical activity that can obscure and mimic cardiac waveforms.

CCT - Certified Cardiographic Technician Exam Practice Test

CCT - Certified Cardiographic Technician Exam Practice Test

CCT Artifact Recognition and Troubleshooting 2