A nurse is caring for a client who has a new prescription for lithium carbonate. Prior to administering the first dose, which of the following laboratory values should the nurse evaluate?

A. Levothyroxine is a medication used to treat hypothyroidism by replacing or supplementing thyroid hormone. It is not typically associated with decreased blood pressure.

B. Weight loss can be an indicator that levothyroxine therapy is effective in treating hypothyroidism. Hypothyroidism often leads to weight gain, and successful treatment with levothyroxine can help reverse this trend.

C. Levothyroxine therapy primarily targets thyroid hormone levels and is not directly associated with decreased inflammation.

D. Seizures are not typically associated with hypothyroidism or its treatment with levothyroxine.

The effectiveness of levothyroxine is primarily assessed by monitoring thyroid function tests and clinical symptoms such as weight loss, improved energy levels, and resolution of hypothyroid symptoms.

A. This client's symptom of shortness of breath while ambulating indicates possible worsening heart failure, which requires prompt assessment but is not immediately life-threatening.

B. Vomiting coffee-ground emesis suggests upper gastrointestinal bleeding, which could be

indicative of a serious condition such as a gastrointestinal ulcer or tear and requires immediate assessment to determine the cause and initiate appropriate treatment.

C. While urinary retention in a client with benign prostatic hyperplasia requires attention, it is not as urgent as upper gastrointestinal bleeding.

D. Green drainage from the T-tube in a client who had an open cholecystectomy may indicate bile leakage, which requires assessment and intervention, but upper gastrointestinal bleeding takes precedence due to its potential for rapid deterioration.