When might a patient with second-degree block, Mobitz type II, exhibit symptoms of decreased cardiac output?
A. When the rate of ventricular contractions decreases below 40 bpm
B. When the rate of atrial contractions decreases below 60 bpm
C. When the rate of atrial contractions increases above 80 bpm
D. When the rate of ventricular contractions increases above 60 bpm
Answer: A
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