A nurse is preparing to administer furosemide 2 mg/kg/day IV bolus divided in equal doses every 8hr to a toddler who weighs 22 lb . Available is furosemide injection 5 mg/mL. how many mL should the nurse administer per dose? (Round the answer to the nearest tenth.)
Explanation & Rationale
1. Convert the toddler's weight from pounds to kilograms: 1 lb = 0.454 kg Weight in kg = 22 lb X 0.454 kg/lb = 9.988 kg (approximately 10 kg) Calculate the total daily dose of furosemide: Daily dose = 2 mg/kg X 10 kg = 20 mg Calculate the dose per administration: The daily dose is divided into equal doses every 8 hours. Since there are 24 hours in a day, this means 24 hours / 8 hours = 3 doses per day. Dose per administration = 20 mg / 3 doses = 6.666... mg (approximately 6.67 mg) Determine the concentration of the furosemide injection: The available furosemide injection is 5 mg/mL. Calculate the volume (in mL) to administer per dose: Use the concentration as a conversion factor: Volume (mL) = Dose per administration (mg) / Concentration (mg/mL) Volume (mL) = 6.67 mg / 5 mg/mL = 1.334 mL Round to the nearest tenth: 1.3 mL.