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.
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A patient's EKG reveals a wide QRS complex (>120 ms) with an RSR' pattern in lead V1 and a wide S wave in leads I and V6. What is the most likely diagnosis?
Answer: Right bundle branch block
An RSR' pattern in V1 with a wide S wave in leads I and V6 and QRS duration greater than 120 ms is the classic presentation of right bundle branch block.
Which EKG finding is characteristic of Wolff-Parkinson-White syndrome?
Answer: Shortened PR interval with delta wave
WPW syndrome features a short PR interval, delta wave slurring the QRS upstroke, and a widened QRS due to ventricular pre-excitation via an accessory pathway.
An EKG shows a regular wide-complex tachycardia at 180 bpm with AV dissociation. What is the most likely rhythm?
Answer: Ventricular tachycardia
A regular wide-complex tachycardia with AV dissociation strongly suggests ventricular tachycardia rather than a supraventricular origin.
On a 12-lead EKG, which finding suggests left ventricular hypertrophy using the Sokolow-Lyon criteria?
Answer: S wave in V1 plus R wave in V5 or V6 greater than 35 mm
The Sokolow-Lyon criteria define LVH as the sum of S wave depth in V1 and R wave height in V5 or V6 exceeding 35 mm.
A patient's rhythm strip shows a progressively lengthening PR interval followed by a dropped QRS complex, then the cycle repeats. What is this rhythm?
Answer: Second-degree AV block Type I (Wenckebach)
Progressive PR prolongation culminating in a non-conducted P wave with a repeating cycle is the defining pattern of Mobitz Type I (Wenckebach) block.
Which EKG change is most commonly associated with acute pericarditis?
Answer: Diffuse ST elevation with PR depression
Acute pericarditis produces widespread concave-up ST elevation across multiple lead territories along with PR segment depression, distinguishing it from focal ischemic changes.