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A client who weighs 165 pounds receives a prescription for lorazepam 0.05 mg/kg per IM 2 hours before a scheduled procedure. The medication is available in 4 mg/mL vial. How many mg should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Answer and Explanation

The Correct Answer is ["3.7"]

Given:

Ordered dose of Lorazepam: 0.05 mg/kg

Patient weight: 165 pounds

Concentration of Lorazepam: 4 mg/mL

Step 1: Convert patient weight from pounds to kilograms:

1 pound (lb) = 0.453592 kilograms (kg)

Patient weight in kg = 165 lbs x 0.453592 kg/lb = 74.8423 kg

Step 2: Calculate the total dose of Lorazepam:

Total dose (mg) = Ordered dose (mg/kg) x Patient weight (kg)

Total dose (mg) = 0.05 mg/kg x 74.8423 kg

Total dose (mg) = 3.742115 mg

Step 3: Round to the nearest tenth:

Total dose (mg) ≈ 3.7 mg

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Correct Answer is ["33"]

Explanation

Rationale:

Given:

Total dose of Potassium Chloride: 30 mEq

Volume of solution: 100 mL

Infusion rate: 10 mEq/hour

Step 1: Determine the concentration of Potassium Chloride in the solution:

Concentration (mEq/mL) = Total Potassium Chloride (mEq) / Volume of solution (mL)

Concentration (mEq/mL) = 30 mEq / 100 mL

Concentration (mEq/mL) = 0.3 mEq/mL

Step 2: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Infusion rate (mEq/hr) / Concentration (mEq/mL)

Infusion rate (mL/hr) = 10 mEq/hr / 0.3 mEq/mL

Infusion rate (mL/hr) = 33.33 mL/hr

Step 3: Round to the nearest whole number:

Infusion rate (mL/hr) ≈ 33 mL/hr

Correct Answer is ["120"]

Explanation

Given:

Ordered dose of Labetalol HCl: 2 mg/minute

Concentration of Labetalol HCl: 200 mg in 200 mL (1 mg/mL)

Step 1: Calculate the infusion rate in mg/hour:

Infusion rate (mg/hour) = Ordered dose (mg/minute) x 60 minutes/hour

Infusion rate (mg/hour) = 2 mg/minute x 60 minutes/hour

Infusion rate (mg/hour) = 120 mg/hour

Step 2: Calculate the infusion rate in mL/hour:

Infusion rate (mL/hour) = Infusion rate (mg/hour) / Concentration (mg/mL)

Infusion rate (mL/hour) = 120 mg/hour / 1 mg/mL

Infusion rate (mL/hour) = 120 mL/hour

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A client who weighs 165 pounds receives a prescription for lorazepam 0.05 mg/kg per IM 2 hours before a scheduled procedure. The medication is available in 4 mg/mL vial. How many mg should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

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Naxlex Comprehensive Predictor Exams

Correct Answer is ["33"]

Explanation

The healthcare provider prescribes a continuous infusion of labetalol HCl at 2 mg/minute. "Labetalol HCI Injection USP 200 mg in 200 mL of 5% Dextrose Injection," is delivered to the unit. How many mL/hour should the nurse program the infusion pump? (Enter numerical value only.)

Correct Answer is ["120"]

Explanation

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