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A hоspice pаtient with end-stаge cаncer pain is receiving IV hydrоmоrphone via PCA pump. The provider orders: Basal rate: 0.4 mg/hr PCA dose: 0.2 mg Lockout interval: 10 minutes The pharmacy prepares a syringe containing 10 mg hydromorphone in 50 mL normal saline. During a 4-hour period, the patient presses the PCA button 18 times, and 15 doses are successfully delivered. Questions 1. What is the concentration of hydromorphone in mg/mL? mg/ml 2. How many mg of hydromorphone does the patient receive from the basal rate in 4 hours? mg 3. How many mg are delivered from the PCA doses in those 4 hours? mg in 4 hours 4. What is the total mg of hydromorphone the patient received in 4 hours? mg received in 4 hours 5. How many total mL of solution were delivered in those 4 hours? ml in 4 hours