The nurse is observing the monitor of a patient with a first-degree atrioventricular (AV) block. What is the nurse aware characterizes this block?
a) P waves hidden with the QRS complex
b) An irregular rhythm
c) A variable heart rate, usually fewer than 60 bpm
d) Delayed conduction, producing a prolonged PR interval
Answer: d) Delayed conduction, producing a prolonged PR interval
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