FREE EKG Certification 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 Question and Answers flashcards as text
A patient's EKG shows a regular rhythm with a rate of 150 bpm, narrow QRS complexes, and no visible P waves. What is the most likely rhythm?
Answer: Supraventricular tachycardia
SVT typically presents with a regular narrow-complex tachycardia around 150 bpm with P waves buried in the QRS or T waves.
Which EKG finding is most characteristic of hyperkalemia?
Answer: Peaked T waves
Peaked, tall T waves are the earliest and most characteristic EKG manifestation of hyperkalemia.
In a 12-lead EKG, ST elevation in leads II, III, and aVF indicates ischemia in which coronary artery territory?
Answer: Right coronary artery
Leads II, III, and aVF reflect the inferior wall of the heart, which is most commonly supplied by the right coronary artery.
What does a prolonged PR interval greater than 0.20 seconds on an EKG indicate?
Answer: First-degree AV block
A PR interval consistently greater than 0.20 seconds with all P waves conducted defines first-degree AV block.
Which EKG lead is best for evaluating atrial rhythm and identifying P waves?
Answer: Lead II
Lead II provides the best view of P waves because its axis is nearly parallel to the normal atrial depolarization vector.
A wide QRS complex greater than 0.12 seconds with an RSR' pattern in lead V1 is characteristic of which condition?
Answer: Right bundle branch block
RBBB classically shows a wide QRS with an RSR' (rabbit ears) pattern in lead V1 due to delayed right ventricular depolarization.