CCT - Certified Cardiographic Technician Rhythm Analysis: Atrial/Junctional Questions and Answers

Question 1

A CCT is analyzing a rhythm strip and observes an irregularly irregular rhythm, no discernible P waves, and a fibrillatory baseline.
The ventricular rate is 130 bpm.
Which of the following is the most likely interpretation?

Accepted Answer

Atrial Fibrillation

Answer

Multifocal Atrial Tachycardia

Answer

Atrial Flutter with variable block

Answer

Junctional Tachycardia

Question 2

An ECG tracing shows a regular rhythm at a rate of 48 bpm. There are no visible P waves, and the QRS complexes are narrow (<0.12 seconds). This rhythm is best described as:

Accepted Answer

Junctional Escape Rhythm

Answer

Sinus Bradycardia

Answer

Third-Degree AV Block

Answer

Agonal Rhythm

Question 3

A patient's rhythm strip displays a heart rate of 80 bpm. The technician notes that there are at least four different P wave morphologies, the R-R interval is irregular, and the PR interval varies. What is this rhythm?

Accepted Answer

Wandering Atrial Pacemaker

Answer

Atrial Fibrillation

Answer

Sinus Arrhythmia with frequent PACs

Answer

Atrial Flutter

Question 4

Which of the following ECG findings is characteristic of a Premature Junctional Contraction (PJC)?

Accepted Answer

An early, narrow QRS complex that may have an inverted or absent P wave.

Answer

An early, wide QRS complex with no preceding P wave.

Answer

A late, narrow QRS complex preceded by a different-looking P wave.

Answer

A normal QRS complex preceded by a P wave with a very long PR interval.

Question 5

A CCT observes a regular, narrow-complex tachycardia at a rate of 170 bpm. There are upright P waves in lead II, but they have a different morphology than the patient's baseline sinus P waves. The PR interval is constant. What is the most likely rhythm?

Accepted Answer

Atrial Tachycardia

Answer

Sinus Tachycardia

Answer

Junctional Tachycardia

Answer

Atrial Fibrillation with RVR

Question 6

A patient is found to have an Accelerated Junctional Rhythm on their ECG. Which of the following heart rate ranges is consistent with this diagnosis?

Accepted Answer

61-100 bpm

Answer

20-40 bpm

Answer

40-60 bpm

Answer

Greater than 100 bpm