The nurse is caring for a patient receiving parenteral nutrition (PN) .In planning the patient's care for the day,which nursing assessment is most essential?

A) Electrolyte levels
B) Weight
C) Temperature
D) Condition of catheter insertion site

Since the need for parenteral nutrition (PN)is usually associated with conditions that result in electrolyte instability,maintaining electrolyte balance during therapy is crucial.Monitor the patient's electrolyte levels (potassium,magnesium,and phosphorus)for low serum levels which may indicate a risk for arrhythmias and muscle weakness,Patients at risk may require having electrolyte panels done several times a day.While it is necessary to monitor the patient's weight and temperature and be alert for signs of infection at the insertion site,the biggest risk to the patient is electrolyte instability.