FREE CCMA EKG Administration Questions and Answers

Question 1

Where is the V4 electrode placed for a standard 12-lead EKG?

Accepted Answer

5th intercostal space, midclavicular line

Answer

Proper lead placement is essential for an accurate EKG tracing. The V4 electrode is placed in the 5th intercostal space at the midclavicular line. This placement follows the placement of V2 and V3.

Question 2

What does the P wave on an EKG tracing represent?

Accepted Answer

Atrial depolarization

Answer

The P wave represents the electrical activity associated with atrial depolarization, which is the contraction of the atria. The QRS complex represents ventricular depolarization, and the T wave represents ventricular repolarization.

Question 3

A wandering baseline artifact on an EKG is most likely caused by which of the following?

Accepted Answer

Poor electrode contact or patient movement

Answer

A wandering baseline is a common artifact where the entire tracing drifts up and down. It is typically caused by poor electrode contact with the skin, which can be due to lotions, oils, or patient movement.

Question 4

What is the standard paper speed for an EKG machine?

Accepted Answer

25 mm/second

Answer

The standard paper speed for an EKG is 25 mm/second. This standardization allows for consistent interpretation of heart rate and intervals across different machines and settings. Changing this speed will compress or stretch the EKG complexes.

Question 5

Which instruction is most appropriate for a patient undergoing a routine EKG?

Accepted Answer

Lie still and try not to talk or move.

Answer

To obtain a clear EKG tracing free of artifacts, the patient must remain as still as possible. They should also be instructed to breathe normally, as holding their breath can alter the heart rate and rhythm.

CCMA - Certified Clinical Medical Assistant Practice Test

CCMA - Certified Clinical Medical Assistant Practice Test

FREE CCMA EKG Administration Questions and Answers