EKG certification Certification FREE EKG Certification Trivia Question and Answers 3

Question 1

Which EKG pattern is most consistent with hyperkalemia?

Accepted Answer

Peaked T waves

Answer

Peaked, narrow T waves are the earliest and most characteristic EKG sign of hyperkalemia.

Question 2

What rhythm is indicated by a saw-tooth pattern of P waves at approximately 300 bpm with a regular ventricular rate?

Accepted Answer

Atrial flutter

Answer

Atrial flutter produces characteristic saw-tooth flutter waves at about 300 bpm, typically with a 2:1 conduction ratio giving a ventricular rate near 150 bpm.

Question 3

In a third-degree (complete) heart block, what is the relationship between P waves and QRS complexes?

Accepted Answer

P waves and QRS complexes occur independently with no consistent relationship

Answer

In complete heart block, the atria and ventricles fire independently because no atrial impulses conduct through the AV node to the ventricles.

Question 4

ST elevation in leads II, III, and aVF most likely indicates ischemia in which coronary artery territory?

Accepted Answer

Right coronary artery

Answer

Leads II, III, and aVF reflect the inferior wall of the heart, which is most commonly supplied by the right coronary artery.

Question 5

What is the primary purpose of placing EKG electrodes in the V1–V6 precordial positions?

Accepted Answer

To visualize electrical activity in the horizontal plane of the heart

Answer

The six precordial leads record electrical activity across the horizontal (transverse) plane, providing views of the anterior, lateral, and septal walls.

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EKG certification Practice Test

EKG certification Certification FREE EKG Certification Trivia Question and Answers 3