EKG certification Certification FREE EKG Certification MCQ Question and Answers 3

Question 1

A patient presents with a sawtooth pattern on EKG at a rate of approximately 300 bpm in the atria. What is the most likely rhythm?

Accepted Answer

Atrial flutter

Answer

Atrial flutter characteristically produces a sawtooth pattern of flutter waves at an atrial rate near 300 bpm, typically with a ventricular response around 150 bpm.

Question 2

Which EKG finding indicates Wolff-Parkinson-White (WPW) syndrome?

Accepted Answer

Delta waves with shortened PR interval

Answer

WPW syndrome is identified by a delta wave (slurred upstroke of the QRS), a shortened PR interval, and a widened QRS complex due to an accessory pathway.

Question 3

What is the correct placement for precordial lead V4?

Accepted Answer

Fifth intercostal space, midclavicular line

Answer

Lead V4 is placed at the fifth intercostal space at the left midclavicular line.

Question 4

A wide-complex tachycardia at 180 bpm with AV dissociation is most consistent with which diagnosis?

Accepted Answer

Ventricular tachycardia

Answer

AV dissociation in the setting of a wide-complex tachycardia is a strong indicator of ventricular tachycardia rather than SVT with aberrancy.

Question 5

Which artifact on an EKG is most commonly caused by patient movement or shivering?

Accepted Answer

Muscle tremor artifact

Answer

Muscle tremor artifact produces a fine, irregular baseline distortion caused by skeletal muscle contractions from shivering or tension.

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EKG certification Certification FREE EKG Certification MCQ Question and Answers 3