Dysrhythmia ECG Monitoring & Analysis

Question 1

What is the normal range for a PR interval on an ECG?

Accepted Answer

0.12 - 0.20 seconds

Answer

0.08 - 0.10 seconds

Answer

0.22 - 0.30 seconds

Answer

0.30 - 0.40 seconds

Question 2

Which ECG finding is characteristic of myocardial infarction?

Accepted Answer

ST-segment elevation

Answer

Shortened PR interval

Answer

Prolonged QT interval

Answer

Flattened T waves

Question 3

Which ECG lead placement provides a view of the heart’s electrical activity from the left lateral perspective?

Accepted Answer

Lead aVL

Answer

Lead II

Answer

Lead III

Answer

Lead V1

Question 4

What does a prolonged QT interval indicate?

Accepted Answer

Risk for Torsades de Pointes

Answer

Risk for bradycardia

Answer

Risk for atrial fibrillation

Answer

Improved cardiac output

Question 5

Which ECG abnormality suggests hyperkalemia?

Accepted Answer

Tall, peaked T waves

Answer

ST-segment depression

Answer

Shortened PR interval

Answer

Prolonged QRS complex

Question 6

Which ECG change is commonly associated with hypokalemia?

Accepted Answer

Flattened or inverted T waves

Answer

Elevated ST segment

Answer

Peaked T waves

Answer

Shortened QT interval