How fast would the heart beat if the AV node were diseased, as occurs in total heart block?
A. 20 to 40 beats per minute
B. The heart rate would be very erratic, and rates would fluctuate widely.
C. An average of 75 beats per minute
D. 40 to 60 beats per minute
E. More than 90 beats per minute
Answer: A
Anatomy & Physiology
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