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 fibrillation

Answer

Supraventricular tachycardia

Answer

Ventricular tachycardia

Question 2

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

Accepted Answer

Delta waves with shortened PR interval

Answer

Osborn waves

Answer

Epsilon waves

Answer

U waves

Question 3

What is the correct placement for precordial lead V4?

Accepted Answer

Fifth intercostal space, midclavicular line

Answer

Fourth intercostal space, right sternal border

Answer

Fourth intercostal space, left sternal border

Answer

Fifth intercostal space, anterior axillary line

Question 4

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

Accepted Answer

Ventricular tachycardia

Answer

Supraventricular tachycardia with aberrancy

Answer

Atrial flutter with 2:1 block

Answer

Torsades de pointes

Question 5

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

Accepted Answer

Muscle tremor artifact

Answer

60-cycle interference

Answer

Wandering baseline

Answer

Lead reversal

Question 6

On a standard 12-lead EKG, what does a pathological Q wave indicate?

Accepted Answer

Prior myocardial infarction

Answer

Current myocardial ischemia

Answer

Acute pericarditis

Answer

Bundle branch block