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A child who weighs 42 kg receives a prescription for methy/prednisolone succinate 5 mg/kg/day IV in divided doses every 6 hours. The medication is available in "Methy prednisolone succinate 40 mg/mL vials." How many mL. should the nurse administer with each dose? (Enter numerical value only. If rounding is required, round to the nearest tenth)
Answer and Explanation

The Correct Answer is ["0.4"]

Given:

Ordered dose of methylprednisolone succinate: 1.5 mg/kg/day IV in divided doses every 6 hours

Child's weight: 42 kg

Concentration of methylprednisolone succinate: 40 mg/mL

 

Step 1: Calculate the total daily dose of methylprednisolone succinate:

Total daily dose (mg) = Ordered dose (mg/kg/day) x Child's weight (kg)

Total daily dose (mg) = 1.5 mg/kg/day x 42 kg

Total daily dose (mg) = 63 mg/day

 

Step 2: Calculate the dose per administration:

Since the medication is given every 6 hours, there are 4 administrations per day.

Dose per administration (mg) = Total daily dose (mg) / Number of administrations per day

Dose per administration (mg) = 63 mg/day / 4 administrations/day

Dose per administration (mg) = 15.75 mg

 

Step 3: Calculate the volume to be administered per dose:

Volume (mL) = Dose per administration (mg) / Concentration (mg/mL)

Volume (mL) = 15.75 mg / 40 mg/mL

Volume (mL) = 0.39375 mL

 

Step 4: Round to the nearest tenth:

Volume (mL) ≈ 0.4 mL


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Related Questions

Correct Answer is ["42"]

Explanation

Given:

Volume of fluid: 1 liter = 1000 mL

Infusion time: 8 hours

Drop factor: 20 gtt/mL

Formula:

Flow rate (gtt/min) = (Volume (mL) / Time (hr)) x Drop factor (gtt/mL) / 60 min/hr

Step 1: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Volume (mL) / Time (hr)

Infusion rate (mL/hr) = 1000 mL / 8 hr

Infusion rate (mL/hr) = 125 mL/hr

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = (Infusion rate (mL/hr) x Drop factor (gtt/mL)) / 60 min/hr

Flow rate (gtt/min) = (125 mL/hr x 20 gtt/mL) / 60 min/hr

Flow rate (gtt/min) = 2500 gtt/hr / 60 min/hr

Flow rate (gtt/min) = 41.667 gtt/min

Step 3: Round to the nearest whole number:

Flow rate (gtt/min) ≈ 42 gtt/min

Correct Answer is ["28"]

Explanation

Given:

Volume of fluid: 1 liter = 1000 mL

Infusion time: 6 hours

Drop factor: 10 gtt/mL

Formula:

Flow rate (gtt/min) = (Volume (mL) / Time (hr)) x Drop factor (gtt/mL) / 60 min/hr

Step 1: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Volume (mL) / Time (hr)

Infusion rate (mL/hr) = 1000 mL / 6 hr

Infusion rate (mL/hr) = 166.67 mL/hr

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = (Infusion rate (mL/hr) x Drop factor (gtt/mL)) / 60 min/hr

Flow rate (gtt/min) = (166.67 mL/hr x 10 gtt/mL) / 60 min/hr

Flow rate (gtt/min) = 1666.7 gtt/hr / 60 min/hr

Flow rate (gtt/min) = 27.778 gtt/min

Step 3: Round to the nearest whole number:

Flow rate (gtt/min) ≈ 28 gtt/min

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