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Basic Dysrhythmia Practice Exam 2025-2026
Exam Test Questions And Verified Answers
What is the flow of conduction in the heart? -
✔ANASWER✔-SA Node --> AV Node --> Bundle of His --
> Purkinje fibers
Identify the parts of the conduction system -
✔ANASWER✔-Left side: SA node, AV node, Right bundle
branch
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Right side: Bundle of His, Left bundle branch, Left anterior
division, Left posterior division
In which AV block should we use Atropine with caution? -
✔ANASWER✔-2nd degree TYPE 2
What is the special quality of the heart in relation to other
muscles in the body? - ✔ANASWER✔-The heart generates its
own electrical impulses
What is the normal HR when the SINUS node is in charge of
heart conduction? - ✔ANASWER✔-60-100 bpm
What is the normal HR when the AV node is in charge of heart
conduction? - ✔ANASWER✔-40-60 bpm
What is the normal HR when the Purkinje Fibers is in charge of
heart conduction? - ✔ANASWER✔-20-40 bpm
What does the P-wave represent? - ✔ANASWER✔-Atrial
depolarization
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What does the QRS complex represent? - ✔ANASWER✔-
Ventricular depolarization
What does the T wave represent? - ✔ANASWER✔-
Ventricular repolarization
Why is there no wave representing atrial repolarization? -
✔ANASWER✔-Atrial repolarization is covered by the
ventricular depolarization wave
What is the danger of a prolonged QT interval? -
✔ANASWER✔-Mailed to types of ventricular tachycardia
One small box - ✔ANASWER✔-0.04 seconds
One large box - ✔ANASWER✔-0.20 seconds (5 tiny boxes)
Normal PR interval - ✔ANASWER✔-0.12-0.20 seconds
Normal QRS complex - ✔ANASWER✔-0.04-0.10 seconds
Normal QT interval - ✔ANASWER✔-Less than 0.46 seconds
Basic Dysrhythmia Practice Exam 2025-2026
Exam Test Questions And Verified Answers
What is the flow of conduction in the heart? -
✔ANASWER✔-SA Node --> AV Node --> Bundle of His --
> Purkinje fibers
Identify the parts of the conduction system -
✔ANASWER✔-Left side: SA node, AV node, Right bundle
branch
,2|Page
Right side: Bundle of His, Left bundle branch, Left anterior
division, Left posterior division
In which AV block should we use Atropine with caution? -
✔ANASWER✔-2nd degree TYPE 2
What is the special quality of the heart in relation to other
muscles in the body? - ✔ANASWER✔-The heart generates its
own electrical impulses
What is the normal HR when the SINUS node is in charge of
heart conduction? - ✔ANASWER✔-60-100 bpm
What is the normal HR when the AV node is in charge of heart
conduction? - ✔ANASWER✔-40-60 bpm
What is the normal HR when the Purkinje Fibers is in charge of
heart conduction? - ✔ANASWER✔-20-40 bpm
What does the P-wave represent? - ✔ANASWER✔-Atrial
depolarization
, 3|Page
What does the QRS complex represent? - ✔ANASWER✔-
Ventricular depolarization
What does the T wave represent? - ✔ANASWER✔-
Ventricular repolarization
Why is there no wave representing atrial repolarization? -
✔ANASWER✔-Atrial repolarization is covered by the
ventricular depolarization wave
What is the danger of a prolonged QT interval? -
✔ANASWER✔-Mailed to types of ventricular tachycardia
One small box - ✔ANASWER✔-0.04 seconds
One large box - ✔ANASWER✔-0.20 seconds (5 tiny boxes)
Normal PR interval - ✔ANASWER✔-0.12-0.20 seconds
Normal QRS complex - ✔ANASWER✔-0.04-0.10 seconds
Normal QT interval - ✔ANASWER✔-Less than 0.46 seconds
