PCA Morphine Dosing for Elderly Patients

A 65-year-old patient with chronic pain related to osteoarthritis is scheduled to receive a patient-controlled analgesia (PCA) pump for post-operative pain management following knee replacement surgery. The PCA pump is programmed to deliver morphine at a rate of ____ mg per hour as a continuous infusion, along with ____ mg of bolus dose per patient request, with a lockout interval of 10 minutes. The physician orders the total daily morphine limit not to exceed ____ mg. You are tasked to calculate the values for the continuous infusion rate, bolus dose, and the daily limit based on the patient’s weight, current morphine regimen, and recommended guidelines for effective pain management in the elderly.