Two Hours After a Kidney Transplant, the Nurse Obtains All

Two hours after a kidney transplant, the nurse obtains all these data when assessing the patient. Which information is most important to communicate to the health care provider?

A) The BUN and creatinine levels are elevated.
B) The urine output is 900 to 1100 ml/hr.
C) The patient's central venous pressure (CVP) is decreased.
D) The patient has level 8 (on a 10-point scale) incision pain when coughing.