EKG certification Certification FREE EKG Certification MCQ Question and Answers 2

Question 1

A patient's EKG shows a prolonged PR interval greater than 0.20 seconds with consistent P-to-QRS conduction. What is the most likely diagnosis?

Accepted Answer

First-degree AV block

Answer

Second-degree AV block Type I

Answer

Second-degree AV block Type II

Answer

Third-degree AV block

Question 2

Which EKG finding is most characteristic of hyperkalemia?

Accepted Answer

Peaked T waves

Answer

Prolonged QT interval

Answer

ST elevation in leads II, III, aVF

Answer

Delta waves

Question 3

What does the QRS complex represent on an EKG tracing?

Accepted Answer

Ventricular depolarization

Answer

Atrial depolarization

Answer

Ventricular repolarization

Answer

Atrial repolarization

Question 4

A rhythm strip shows irregularly irregular R-R intervals with no identifiable P waves. What is the most likely rhythm?

Accepted Answer

Atrial fibrillation

Answer

Atrial flutter

Answer

Multifocal atrial tachycardia

Answer

Sinus arrhythmia

Question 5

In which lead grouping would you expect to see ST elevation during an anterior wall myocardial infarction?

Accepted Answer

V1-V4

Answer

II, III, aVF

Answer

I, aVL

Answer

V5, V6

Question 6

What is the normal duration of the QRS complex in a healthy adult?

Accepted Answer

0.06 to 0.10 seconds

Answer

Less than 0.04 seconds

Answer

0.12 to 0.16 seconds

Answer

0.20 to 0.24 seconds