A client admitted with a deep vein thrombosis is prescribed a continuous intravenous (IV) … — NCLEX-RN

A client admitted with a deep vein thrombosis is prescribed a continuous intravenous (IV) infusion of heparin. The client weighs $209 \text{ lbs}$ . The prescribed protocol dictates an initial infusion rate of $18 \text{ units/kg/hr}$ . The pharmacy supplies a premixed IV bag containing $25,000 \text{ units}$ of heparin in $250 \text{ mL}$ of $0.45\%$ sodium chloride. At what rate in mL/hr should the nurse program the infusion pump? Record your answer to one decimal place.

Cevap: 17.1 mL/hr

Cevap

17.1

To determine the correct infusion rate, the nurse must first convert the client's weight to kilograms (

209 \text{ lbs} \div 2.2 = 95 \text{ kg}

). Next, calculate the hourly dose by multiplying the weight by the prescribed rate (

95 \text{ kg} \times 18 \text{ units/kg/hr} = 1710 \text{ units/hr}

). Finally, divide the hourly dose by the concentration of the IV bag (

25,000 \text{ units} \div 250 \text{ mL} = 100 \text{ units/mL}

) to find the rate in mL/hr (

1710 \text{ units/hr} \div 100 \text{ units/mL} = 17.1 \text{ mL/hr}

Adım Adım Çözüm

Convert weight from pounds to kilograms.

95 \text{ kg}

The heparin dose is prescribed based on the client's weight in kilograms.

Calculate the required hourly dose of heparin.

1710 \text{ units/hr}

Multiply the client's weight in kg by the prescribed dosage rate of

18 \text{ units/kg/hr}

Determine the concentration of the available heparin solution.

100 \text{ units/mL}

Divide the total units in the bag (

25,000 \text{ units}

) by the total volume (

250 \text{ mL}

) to find the units per mL.

Calculate the volumetric IV pump infusion rate.

17.1 \text{ mL/hr}

Divide the required hourly dose (

1710 \text{ units/hr}

) by the solution concentration (

100 \text{ units/mL}

) to determine the required mL per hour.

Anahtar Kavram

Weight-based intravenous medication dosage calculation and infusion pump programming.

Soru

Cevap

Adım Adım Çözüm

Anahtar Kavram

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