Jack Johnson is a 58-year-old who's been living with an internal, fixed-rate pacemaker. You're checking his readings on a cardiac monitor and notice an absence of spikes. What should you do?
a) Take Jack's blood pressure.
b) Double-check the monitoring equipment.
c) Nothing, there's no cause for alarm.
d) Suggest the need for a new beta-blocker to the doctor.
Answer: b) Double-check the monitoring equipment.
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