A client who had a kidney transplant last week is receiving cyclosporine. This morning the client reports experiencing a headache and blurred vision. Based on which assessment finding should the nurse withhold the medication until the healthcare provider (HCP) is notified?

A. Temperature of 100.8° F (38.2° C): A mildly elevated temperature in a post-transplant client may suggest infection or early rejection, both of which warrant monitoring. However, this is not a direct reason to withhold cyclosporine, which is essential for preventing organ rejection.B. Elevated blood urea nitrogen (BUN): Elevated BUN could indicate impaired renal function, which should be monitored during cyclosporine therapy. However, this alone is not an urgent reason to withhold the medication without further evaluation of kidney function trends and symptoms.C. Renal output of 120 mL/hour: This is a healthy urine output and suggests good renal perfusion and function. It does not present any contraindication to continuing cyclosporine and supports that the transplanted kidney is functioning well.D. Blood pressure 180/98 mm Hg: Hypertension is a known side effect of cyclosporine and can become severe. A blood pressure this high, especially when accompanied by headache and blurred vision, suggests possible cyclosporine-induced hypertensive crisis or toxicity, and warrants immediate withholding of the medication and notification of the HCP.