Final answer:
The nurse suspects a decrease in dosage of levothyroxine when the client exhibits fatigue, weight gain, cold intolerance, slow heart rate, and poor memory.
Step-by-step explanation:
The nurse suspects that a decrease in dosage of levothyroxine is needed when the client exhibits the following clinical manifestations for hypothyroidism: fatigue, weight gain, cold intolerance, slow heart rate, and poor memory.
For example, the client may experience tiredness, abnormal weight gain, and feel extremely cold even in warm temperatures. They may also have a slow heart rate and difficulty remembering things. These manifestations suggest that the current dosage of levothyroxine may not be sufficient to manage the hypothyroidism.
It is important for the nurse to monitor the client's symptoms closely and communicate with the healthcare provider for any necessary adjustments in the medication dosage.