EKG Interpretation and Cardiac Function Quiz

What is the natural pacemaker of the heart?

• SA node

• Bundle of His

• Purkinje fibers

• AV node

What does the P wave represent in an EKG?

• Atrial repolarization

• Atrial depolarization

• Ventricular repolarization

• Ventricular depolarization

What is the normal range for a heart rate generated by the SA node?

• 60 to 100 beats per minute

• 40 to 60 beats per minute

• 100 to 120 beats per minute

• 20 to 40 beats per minute

Where does atrial repolarization occur in the EKG?

• Within the QRS complex

• During the T wave

• Before the P wave

• After the T wave

What is the inherent rate of the AV node and Bundle of His?

• 20 to 40 beats per minute

• 40 to 60 beats per minute

• 60 to 100 beats per minute

• 100 to 120 beats per minute

What does the QRS complex represent?

• Ventricular repolarization

• Atrial depolarization

• Ventricular depolarization

• Atrial repolarization

What is the correct duration for the PR interval?

• 0.20 to 0.30 seconds

• 0.30 to 0.40 seconds

• 0.12 to 0.20 seconds

• 0.06 to 0.12 seconds

Which method is used to calculate heart rate for irregular rhythms using a 6 second EKG strip?

• 6 second method

• Big box method

• Small box method

• R-R interval method

What could an absent or inverted P wave indicate?

• Normal sinus rhythm

• Ventricular fibrillation

• Junctional rhythm

• Atrial flutter

What is the maximum normal duration for the QRS complex?

• 0.06 seconds

• 0.10 seconds

• 0.12 seconds

• 0.15 seconds