The nurse is administering atropine 0.3mg IV to a 75-year-old patient with a heart rate of 45, and his heart rate decreases to 38. What is the most likely explanation?
A. Atropine exerts its affects by stimulating the vagus nerve.
B. The order dose was too low
C. Adenosine was indicated, not atropine
D. Atropine typically slows the heart rate first and then increases it.
