DYSRHYTHMIA CARDIAC RHYTHM
REVIEW 2026 QUESTIONS WITH
SOLUTIONS TESTED QUESTIONS.
■ What is sick sinus syndrome? Answer: A condition where the sinus
node fails, causing alternating periods of bradycardia and tachycardia.
■ What is the impact of dysrhythmias on heart perfusion? Answer:
They reduce the efficiency of the heart's pumping cycle, affecting
blood flow to tissues.
■ What are common clinical manifestations of dysrhythmias?
Answer: Symptoms can include anxiety, fainting, chest pain,
shortness of breath, dizziness, and rapid respirations.
■ What is the significance of potassium in cardiac function? Answer:
Potassium is critical for sending electrical impulses to the heart;
imbalances can lead to irregular heartbeats.
■ What is the difference between nonsustained and sustained
ventricular tachycardia? Answer: Nonsustained VT lasts less than 30
seconds, while sustained VT lasts more than 30 seconds and can
cause serious symptoms.
■ What is the relationship between atrial flutter and stroke risk?
Answer: Atrial flutter is linked to an increased risk of stroke due to
the potential for blood clots forming in the atria.
, ■ What are the two main groups of dysrhythmias based on heart rate?
Answer: Tachycardia (fast heart rate) and bradycardia (slow heart
rate).
■ What can be used to treat some dysrhythmias? Answer: Electricity
(defibrillation), pacemakers, or medications may be used to restore
normal rhythms.
■ What is the effect of rapid heart rates on ventricular function?
Answer: Rapid heart rates can prevent the ventricles from fully
contracting, leading to ineffective blood pumping.
■ What is the role of calcium in cardiac dysrhythmias? Answer:
Calcium imbalances can also cause irregular heart rhythms.
■ What are the potential consequences of untreated ventricular
fibrillation? Answer: It can lead to death if a normal heart rhythm is
not restored within minutes.
■ What is the primary cause of atrial fibrillation? Answer: Disruption
in the conduction system leading to erratic electrical signals in the
atria.
■ How does anxiety relate to cardiac dysrhythmias? Answer: Anxiety
can be a clinical manifestation of dysrhythmias affecting the heart.
REVIEW 2026 QUESTIONS WITH
SOLUTIONS TESTED QUESTIONS.
■ What is sick sinus syndrome? Answer: A condition where the sinus
node fails, causing alternating periods of bradycardia and tachycardia.
■ What is the impact of dysrhythmias on heart perfusion? Answer:
They reduce the efficiency of the heart's pumping cycle, affecting
blood flow to tissues.
■ What are common clinical manifestations of dysrhythmias?
Answer: Symptoms can include anxiety, fainting, chest pain,
shortness of breath, dizziness, and rapid respirations.
■ What is the significance of potassium in cardiac function? Answer:
Potassium is critical for sending electrical impulses to the heart;
imbalances can lead to irregular heartbeats.
■ What is the difference between nonsustained and sustained
ventricular tachycardia? Answer: Nonsustained VT lasts less than 30
seconds, while sustained VT lasts more than 30 seconds and can
cause serious symptoms.
■ What is the relationship between atrial flutter and stroke risk?
Answer: Atrial flutter is linked to an increased risk of stroke due to
the potential for blood clots forming in the atria.
, ■ What are the two main groups of dysrhythmias based on heart rate?
Answer: Tachycardia (fast heart rate) and bradycardia (slow heart
rate).
■ What can be used to treat some dysrhythmias? Answer: Electricity
(defibrillation), pacemakers, or medications may be used to restore
normal rhythms.
■ What is the effect of rapid heart rates on ventricular function?
Answer: Rapid heart rates can prevent the ventricles from fully
contracting, leading to ineffective blood pumping.
■ What is the role of calcium in cardiac dysrhythmias? Answer:
Calcium imbalances can also cause irregular heart rhythms.
■ What are the potential consequences of untreated ventricular
fibrillation? Answer: It can lead to death if a normal heart rhythm is
not restored within minutes.
■ What is the primary cause of atrial fibrillation? Answer: Disruption
in the conduction system leading to erratic electrical signals in the
atria.
■ How does anxiety relate to cardiac dysrhythmias? Answer: Anxiety
can be a clinical manifestation of dysrhythmias affecting the heart.
