12 Questions
Sinus bradycardia is characterized by atrial and ventricular rates greater than 100 to 180 beats per minute
False
Premature ventricular contractions (PVCs) result from decreased irritability of the ventricles
False
Flutter is characterized by rapid, regular contraction of atria or ventricles reaching up to 250/300 beats per minute
True
Fibrillation is characterized by rapid, random, irregular contraction reaching up to 350-400 beats per minute
True
Sinus tachycardia is characterized by atrial and ventricular rates more than 100 to 180 beats per minute
True
Cardioversion is used mainly in atrial tachycardia
False
Premature ventricular contractions (PVCs) result from increased irritability of the ventricles
False
Cardioversion delivers an unsynchronized electrical shock to change a dysrhythmia to a rhythm
False
Electrodes for cardioversion are placed at the right of the sternum below the clavicle and at the base of the heart
False
Which of the following can cause dysrhythmias?
Coronary artery disease
What are ectopic beats in the context of dysrhythmias?
Irregular heartbeats caused by impulses from specialized cells in the heart
What is the characteristic feature of dysrhythmia known as flutter?
Rapid, regular contraction of atria or ventricles reaching up to 250/300 beats per minute
Test your knowledge of cardiac arrhythmias with this quiz covering sinus bradycardia, sinus tachycardia, premature ventricular contractions (PVCs), atrial and ventricular flutter, and fibrillation.
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