Questions and Answers
What is the role of the SA node in the heart's conduction system?
Acting as the pacemaker of the heart
What condition is characterized by a regular but slow heart rate?
Bradycardia
Which atrial abnormality involves contracting outside the normal conduction pathway?
Premature atrial contractions
What is the main risk associated with atrial fibrillation?
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What occurs in a third-degree heart block?
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Which ventricular abnormality involves muscle fibers contracting independently and rapidly?
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What effect can ventricular tachycardia have on cardiac output?
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What distinguishes bundle branch block as a ventricular conduction abnormality?
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What is a key characteristic of premature ventricular contractions (PVCs)?
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What distinguishes sick sinus syndrome among sinus node abnormalities?
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