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Zorluk: OrtaPharmacological and Parenteral Therapies

A pediatric client weighing 48.4 lb48.4\text{ lb} is prescribed a continuous intravenous (IV) infusion of fentanyl at 2 \mug/kg/hr2\text{ \mu g/kg/hr} for pain management. The pharmacy dispenses an IV bag containing 500 \mug500\text{ \mu g} of fentanyl in 100 mL100\text{ mL} of 0.9%0.9\% sodium chloride. At what rate, in mL/hr\text{mL/hr}, should the nurse set the IV infusion pump? Record your answer using one decimal place.

Cevap: 8.8 mL/hr

Cevap

8.8
To determine the correct IV infusion rate, the nurse must first convert the client's weight to kilograms (48.4 lb÷2.2=22 kg48.4 \text{ lb} \div 2.2 = 22 \text{ kg}). Next, calculate the hourly dose by multiplying the weight by the prescribed rate (22 kg×2 \mug/kg/hr=44 \mug/hr22 \text{ kg} \times 2 \text{ \mu g/kg/hr} = 44 \text{ \mu g/hr}). Finally, divide the required hourly dose by the concentration of the supplied medication (500 \mug÷100 mL=5 \mug/mL500 \text{ \mu g} \div 100 \text{ mL} = 5 \text{ \mu g/mL}) to find the pump rate in mL/hr (44 \mug/hr÷5 \mug/mL=8.8 mL/hr44 \text{ \mu g/hr} \div 5 \text{ \mu g/mL} = 8.8 \text{ mL/hr}).

Adım Adım Çözüm

1
Convert the client's weight from pounds to kilograms.
22 kg
The prescribed medication dose is weight-based in kilograms, so the weight must be converted first.
2
Calculate the total hourly dose required in micrograms.
44μg/hr44 \mu g/hr
To determine the exact amount of active medication the client needs per hour based on their weight.
3
Determine the concentration of the dispensed fentanyl solution.
5μg/mL5 \mu g/mL
To find out how many micrograms of fentanyl are contained in each milliliter of the IV fluid.
4
Calculate the final IV infusion pump rate.
8.8 mL/hr
To determine the precise volume of fluid to administer per hour to safely deliver the required dose.

Anahtar Kavram

Weight-based intravenous continuous infusion calculation
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