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Chamberlain University-Illinois
NR 222
Cardiac Dysrhythmias (Edapt- Exam 2)
Questions and Answers 2026 Latest Update
Cardiac dysrhythmias affect perfusion by reducing the efficiency of the
heart's pumping cycle. Which factors contribute to the reduction in
efficiency? Select all that apply. Ans: -Irregular contractions that interfere
with normal filling
-Preventing adequate filling during diastole with rapid heart rate
-Heart rate fluctuation between 60-100
-Conduction from the sinoatrial to the atrioventricular node
-Very slow heart rate reducing output to tissue
Atrial Fibrillation (A-Fib) Ans: The conduction system is disrupted, and
electrical signals move erratically around the atria.
Atrial Flutter Ans: It is caused when electrical impulses begin in a different
spot inside the atria instead of the SA node and the impulse begins to travel
through the atria in a circuit (a closed loop).
ventricular fibrillation Ans: The conduction system is disrupted, and
electrical signals move erratically around the ventricles.
ventricular tachycardia Ans: The conduction system is disrupted and causes
the ventricles to beat quickly and not in harmony with the atria (upper
chambers).
What is the natural Pacemaker of the heart? Ans: SA node
What are Cardiac Dysrhythmias? Ans: they are irregular or abnormal
electrical signals that may cause the heart to contract too quickly, too
slowly, or in an abnormal direction.
© 2026 All rights reserved
Chamberlain University-Illinois
NR 222
Cardiac Dysrhythmias (Edapt- Exam 2)
Questions and Answers 2026 Latest Update
Cardiac dysrhythmias affect perfusion by reducing the efficiency of the
heart's pumping cycle. Which factors contribute to the reduction in
efficiency? Select all that apply. Ans: -Irregular contractions that interfere
with normal filling
-Preventing adequate filling during diastole with rapid heart rate
-Heart rate fluctuation between 60-100
-Conduction from the sinoatrial to the atrioventricular node
-Very slow heart rate reducing output to tissue
Atrial Fibrillation (A-Fib) Ans: The conduction system is disrupted, and
electrical signals move erratically around the atria.
Atrial Flutter Ans: It is caused when electrical impulses begin in a different
spot inside the atria instead of the SA node and the impulse begins to travel
through the atria in a circuit (a closed loop).
ventricular fibrillation Ans: The conduction system is disrupted, and
electrical signals move erratically around the ventricles.
ventricular tachycardia Ans: The conduction system is disrupted and causes
the ventricles to beat quickly and not in harmony with the atria (upper
chambers).
What is the natural Pacemaker of the heart? Ans: SA node
What are Cardiac Dysrhythmias? Ans: they are irregular or abnormal
electrical signals that may cause the heart to contract too quickly, too
slowly, or in an abnormal direction.
© 2026 All rights reserved
