After the nurse gives IV atropine to a patient with symptomatic type 1, second-degree atrioventricular (AV) block, which finding indicates that the medication has been effective?
a. Increase in the patient's heart rate
b. Increase in strength of peripheral pulses
c. Decrease in premature atrial contractions
d. Decrease in premature ventricular contractions
ANS: A
Atropine will increase the heart rate and conduction through the AV node. Because the medication increases electrical conduction, not cardiac contractility, the quality of the peripheral pulses is not used to evaluate the drug effectiveness. The patient does not have premature atrial or ventricular contractions.
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