The nurse's teaching plan for a client taking lithium should include instructions to:

Choice A reason:
Prednisone is a corticosteroid that can cause hyperglycemia, especially in clients with diabetes. The nurse should monitor blood glucose levels because prednisone can increase insulin resistance and hepatic glucose production, leading to elevated blood glucose levels. Normal fasting blood glucose levels range from 70 to 99 mg/dL, and for individuals with diabetes, maintaining blood glucose levels within the target range set by their healthcare provider is crucial to prevent complications.

Choice B reason:
While corticosteroids can affect electrolyte balance, they typically cause a decrease in potassium levels, not an increase. Therefore, monitoring for hypokalemia, rather than hyperkalemia, would be more appropriate when a patient is on prednisone. The normal range for serum potassium is 3.5 to 5.0 mEq/L.

Choice C reason:
Corticosteroids like prednisone can cause leukocytosis, an increase in white blood cell count, as part of their immunosuppressive action. However, this is generally not a harmful side effect unless accompanied by infection or other complications. The normal range for white blood cell count is approximately 4,500 to 11,000 cells per microliter.

Choice D reason:
Increased ketones in the urine, or ketonuria, is not a typical side effect of prednisone. Ketonuria is more commonly associated with uncontrolled diabetes, particularly Type 1 diabetes, when there is an insulin deficiency and the body resorts to fat breakdown, leading to ketone production.

Choice a reason:
Including yogurt in the diet can be beneficial for a client experiencing diarrhea related to antibiotic therapy. Yogurt contains probiotics, which are live microorganisms that can provide health benefits when consumed. These probiotics can help restore the balance of good bacteria in the gut that antibiotics may have disrupted, potentially reducing the duration and severity of diarrhea. However, it's important to choose yogurts that contain active probiotics and to be aware that some individuals may not tolerate dairy well during a bout of diarrhea.

Choice b reason:
Administering famotidine 20 mg daily may help with symptoms of gastritis or peptic ulcers but is not directly related to treating antibiotic-associated diarrhea. Famotidine is a histamine-2 blocker used to reduce stomach acid and is not typically used as a treatment for diarrhea. It should be noted that if a patient is experiencing severe diarrhea, the underlying cause should be addressed rather than just managing symptoms.

Choice c reason:
Testing stool for occult blood is generally not a standard intervention for antibiotic-related diarrhea unless there is a suspicion of gastrointestinal bleeding or an infection like C. difficile, which can cause more severe colitis. Occult blood tests are more commonly used for screening for colorectal cancer or diagnosing conditions that cause gastrointestinal bleeding.

Choice d reason:
Arranging for IV administration of the antibiotic instead of the oral route may be considered if the client has severe diarrhea that prevents the absorption of oral medications or if the client is unable to tolerate oral intake[^10^]¹¹¹²¹³¹⁴. However, many antibiotics have excellent oral bioavailability, and switching from IV to oral antibiotics when appropriate can be just as effective and is often preferred due to convenience and lower risk of complications.