A nurse is reviewing the morning laboratory results of electrolytes for four clients who are receiving digoxin. Which of the following clients should the nurse identify as being at risk for developing digoxin toxicity?

a. "This test will inform your provider if you are anemic." Serum creatinine is not used to assess anemia. Anemia is often evaluated through tests like hemoglobin and hematocrit.

b. "This test will inform your provider if you have an infection." Serum creatinine is not a direct indicator of infection. It is primarily used to assess kidney function.

c. "This test will inform your provider if you have a thyroid disorder." Serum creatinine is not

used to evaluate thyroid function. Thyroid function is typically assessed through thyroid function tests.

d. "This test will inform your provider how your kidneys are functioning." This is the correct

response. Serum creatinine is a waste product that is filtered by the kidneys, and elevated levels may indicate impaired renal function.

a. "Both illnesses begin in the rectum." This statement is not accurate. Ulcerative colitis typically begins in the rectum and progresses proximally, while Crohn's disease can involve any part of the digestive tract.

b. "Both illnesses are inflammatory in nature." This is the correct statement. Both ulcerative colitis and Crohn's disease are inflammatory bowel diseases characterized by chronic

inflammation of the gastrointestinal tract.

c. "Both illnesses manifest fistula formation." Fistula formation is more commonly associated with Crohn's disease, not ulcerative colitis.

d. "Both illnesses result in malabsorption of nutrients." While malabsorption can occur in both conditions, it is generally more associated with Crohn's disease than ulcerative colitis.