EKG certification Certification FREE EKG Certification Interpretation Question and Answers 2

Question 1

A patient's EKG shows a regular rhythm with sawtooth-shaped waves best seen in leads II, III, and aVF, with a ventricular rate of approximately 150 bpm. What is the most likely interpretation?

Accepted Answer

Atrial flutter with 2:1 conduction

Answer

Sawtooth flutter waves at approximately 300 bpm with a 2:1 block produce a ventricular rate near 150 bpm, which is characteristic of atrial flutter.

Question 2

On a 12-lead EKG, ST elevation is noted in leads V1 through V4. Which coronary artery is most likely occluded?

Accepted Answer

Left anterior descending artery

Answer

Leads V1-V4 correspond to the anterior wall of the heart, which is supplied by the left anterior descending artery.

Question 3

A rhythm strip shows an irregularly irregular rhythm with no discernible P waves and a narrow QRS complex. What is the correct interpretation?

Accepted Answer

Atrial fibrillation

Answer

An irregularly irregular rhythm with absent P waves and narrow QRS complexes is the hallmark of atrial fibrillation.

Question 4

Which EKG finding is most consistent with hyperkalemia?

Accepted Answer

Peaked T waves with widened QRS

Answer

Hyperkalemia classically produces tall, peaked T waves and progressive QRS widening as potassium levels rise.

Question 5

A patient presents with chest pain and the EKG shows ST elevation in leads II, III, and aVF with reciprocal ST depression in leads I and aVL. Which type of myocardial infarction does this indicate?

Accepted Answer

Inferior MI

Answer

Leads II, III, and aVF reflect the inferior surface of the heart, and ST elevation in these leads with reciprocal changes confirms an inferior MI.

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EKG certification Certification FREE EKG Certification Interpretation Question and Answers 2