FREE EKG Certification Interpretation Question and Answers Flashcards
6 cards from real EKG certification Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 FREE EKG Certification Interpretation Question and Answers flashcards as text
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?
Answer: Atrial flutter with 2:1 conduction
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.
On a 12-lead EKG, ST elevation is noted in leads V1 through V4. Which coronary artery is most likely occluded?
Answer: Left anterior descending artery
Leads V1-V4 correspond to the anterior wall of the heart, which is supplied by the left anterior descending artery.
A rhythm strip shows an irregularly irregular rhythm with no discernible P waves and a narrow QRS complex. What is the correct interpretation?
Answer: Atrial fibrillation
An irregularly irregular rhythm with absent P waves and narrow QRS complexes is the hallmark of atrial fibrillation.
Which EKG finding is most consistent with hyperkalemia?
Answer: Peaked T waves with widened QRS
Hyperkalemia classically produces tall, peaked T waves and progressive QRS widening as potassium levels rise.
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?
Answer: Inferior MI
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.
What does a prolonged PR interval greater than 200 ms on an EKG indicate?
Answer: First-degree AV block
A PR interval consistently greater than 200 ms with every P wave followed by a QRS complex defines first-degree AV block.