EKG certification Certification EKG Interpretation & Waveforms 2

Question 1

A patient's EKG shows a prolonged QT interval measuring 520 ms. Which of the following is the MOST significant risk associated with this finding?

Accepted Answer

Torsades de pointes

Answer

Atrial fibrillation

Answer

First-degree AV block

Answer

Sinus bradycardia

Question 2

Which EKG finding is characteristic of Wolff-Parkinson-White (WPW) syndrome?

Accepted Answer

Delta wave with shortened PR interval

Answer

Prolonged PR interval with dropped beats

Answer

ST elevation in contiguous leads

Answer

Peaked T waves with widened QRS

Question 3

On a standard 12-lead EKG, which leads directly view the inferior wall of the heart?

Accepted Answer

II, III, aVF

Answer

V1, V2, V3

Answer

I, aVL

Answer

V5, V6

Question 4

A rhythm strip shows an irregularly irregular rhythm with no discernible P waves and a ventricular rate of 130 bpm. What is the MOST likely interpretation?

Accepted Answer

Atrial fibrillation with rapid ventricular response

Answer

Multifocal atrial tachycardia

Answer

Atrial flutter with variable block

Answer

Sinus arrhythmia

Question 5

What does ST segment depression in leads V1-V4 during an acute clinical presentation MOST likely indicate?

Accepted Answer

Posterior wall myocardial infarction

Answer

Anterior wall STEMI

Answer

Pericarditis

Answer

Benign early repolarization

Question 6

Which of the following EKG changes is MOST consistent with hyperkalemia?

Accepted Answer

Peaked T waves and widened QRS complex

Answer

Prominent U waves and flattened T waves

Answer

Diffuse ST elevation with PR depression

Answer

Short QT interval with ST depression