A nurse is monitoring an older adult client who has an exacerbation of chronic lymphocytic leukemia. The nurse notes petechiae on the client's skin. Which of the following actions should the nurse take?

C. This is crucial because good medication adherence is essential for a transplant recipient to prevent rejection and maintain overall health. Non-adherence can jeopardize the transplant's success.

A This could be a risk factor for the client's own health, but it's not directly related to the transplant process or medication adherence.

B. This highlights a psychosocial concern, important for overall well-being, but doesn't directly impact the transplant candidacy.

D. This might be relevant for the medical history, but it doesn't directly affect medication adherence or the immediate transplant candidacy (unless the asthma is severe and uncontrolled).

Fluid volume deficit

The client is receiving Furosemide (a diuretic) at a significant dose (80 mg IV three times per day). This medication promotes diuresis to reduce fluid overload in heart failure. The client's weight decreased from 97.5 kg on admission to 90.7 kg on Day 2, indicating a fluid loss of approximately 6.8 kg (about 15 pounds). This substantial weight loss suggests a risk for fluid volume deficit, which can lead to hypovolemia and potential complications such as hypotension and decreased tissue perfusion.

Acute kidney injury (AKI)

The client's BUN level increased from 10 mg/dL on admission to 20 mg/dL on Day 2, which suggests impaired kidney function. This change may indicate a decrease in glomerular filtration rate due to decreased renal perfusion secondary to fluid loss from diuresis. AKI is a known complication in heart failure patients receiving diuretic therapy, especially if there is inadequate monitoring and adjustment of diuretic doses.