Identify an accurate statement about arrhythmias.
A. The arrhythmias that originate below the atrioventricular node are known as supraventricular arrhythmias.
B. Arrhythmias are often caused by electrolyte disturbances and overstimulation of the heart.
C. All arrhythmias originate in the atria of the heart.
D. Arrhythmias result in an increase in cardiac output and blood pressure.
Answer: B
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