Rn Hesi Dosage Calculations Proctored Exam
Calculation
The healthcare provider prescribes hydromorphone 1 mg intravenously (IV) every 3 hours for an older client after hip replacement surgery. The nurse prepares the prescribed dose from an ampule labeled, "Hydromorphone Injection 2 mg/mL." Additional instructions for opiate naive clients recommend diluting the dosage with 3 mL of sterile normal saline (NS) for IV push over 2 to 3 minutes. How many mL is the total volume of diluted medication? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)
mL
Explanation & Rationale
To calculate the total volume of diluted medication, we need to use the formula: Total volume (mL) = Drug volume (mL) + Diluent volume (mL) First, we need to calculate the drug volume by dividing the dose by the concentration. In this case, 1 mg of hydromorphone is equivalent to 0.5 mL of hydromorphone injection. Plugging in the given values, we get: Total volume (mL) = 0.5 mL + 3 mL Simplifying, we get: Total volume (mL) = 3.5 mL
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