A 70-year-old client returned from a transurethral resection…

A 70-year-old client returned from a transurethral resection of the prostate 8 hours ago with a continuous bladder irrigation infusing wide open at a constant flow.  The nurse reviews his laboratory results as follows: Sodium (136-145) 128 mEq/L Hemoglobin 15 g/dL Hematocrit 42% Red blood cell count 4.5     Along with labs and accurate patient assessment, What action by the nurse is the most appropriate?