A nurse is caring for a client admitted with a hypertensive crisis. The healthcare provide… — NCLEX-RN

A nurse is caring for a client admitted with a hypertensive crisis. The healthcare provider prescribes a continuous intravenous (IV) infusion of sodium nitroprusside at $2.5 \text{ mcg/kg/min}$ . The client weighs $187 \text{ lbs}$ . The pharmacy dispenses an IV bag containing $50 \text{ mg}$ of sodium nitroprusside in $250 \text{ mL}$ of 5% dextrose in water (D5W). At what rate, in $\text{mL/hr}$ , should the nurse set the infusion pump? (Record answer to the nearest whole number).

Cevap: 64 mL/hr

Cevap

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

187 \text{ lbs} \div 2.2 = 85 \text{ kg}

). Next, the weight is multiplied by the ordered dose (

2.5 \text{ mcg/kg/min} \times 85 \text{ kg} = 212.5 \text{ mcg/min}

). The total dose per hour is

212.5 \text{ mcg/min} \times 60 \text{ min/hr} = 12,750 \text{ mcg/hr}

. The concentration of the IV bag is

50,000 \text{ mcg} \div 250 \text{ mL} = 200 \text{ mcg/mL}

. Dividing the hourly dose by the concentration yields

12,750 \text{ mcg/hr} \div 200 \text{ mcg/mL} = 63.75 \text{ mL/hr}

, which rounds up to

64

Adım Adım Çözüm

Convert the client's weight from pounds to kilograms.

187 \text{ lbs} \div 2.2 = 85 \text{ kg}

The prescribed dose is weight-based in kg, so the weight must be converted first.

Calculate the prescribed dose per minute.

2.5 \text{ mcg/kg/min} \times 85 \text{ kg} = 212.5 \text{ mcg/min}

This determines the exact amount of medication the client needs to receive every minute.

Determine the concentration of the medication provided by the pharmacy.

Convert mg to mcg:

50 \text{ mg} \times 1,000 = 50,000 \text{ mcg}

. Then,

50,000 \text{ mcg} \div 250 \text{ mL} = 200 \text{ mcg/mL}

Finding the concentration in mcg/mL aligns the units with the prescribed dose.

Calculate the required fluid volume per minute.

212.5 \text{ mcg/min} \div 200 \text{ mcg/mL} = 1.0625 \text{ mL/min}

This determines how much fluid volume must be delivered each minute to provide the ordered dose.

Convert the rate to mL/hr and round to the nearest whole number.

1.0625 \text{ mL/min} \times 60 \text{ min/hr} = 63.75 \text{ mL/hr}

. Rounded to the nearest whole number =

64 \text{ mL/hr}

Infusion pumps are typically programmed in mL/hr, and the stem requires rounding to the nearest whole number.

Anahtar Kavram

Weight-based Intravenous Infusion Rate Calculation

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