A nurse is obtaining vital signs for a client who has been taking propranolol. Which of the following findings should the nurse identify as an adverse effect of the medication?

A. A respiratory rate of 24/min is elevated and may suggest respiratory distress, but it is not a specific adverse effect of propranolol. B. An oral temperature of 38.9° C (102° F) indicates fever, which is not a typical adverse effect of propranolol. C. A blood pressure of 118/78 mm Hg is within normal limits and does not indicate an adverse effect of propranolol, which is often used to manage hypertension. D. An apical pulse of 50/min indicates bradycardia, a known adverse effect of propranolol, which can occur due to its action on the heart rate.