Final answer:
The nurse should report the sodium level of 125 mEq/L to the provider as it indicates hyponatremia, which can affect lithium treatment for bipolar disorder.
The correct answer is D) Sodium level 125 mEq/L
Step-by-step explanation:
The client who has bipolar disorder and is being treated with lithium has a morning lithium level of 1.5 mEq/L. The nurse should report the sodium level of 125 mEq/L to the provider.
This value represents hyponatremia, which is a lower-than-normal level of sodium in the blood. Hyponatremia can be particularly concerning in the context of bipolar treatment as it may affect the distribution and excretion of lithium, potentially leading to toxicity.