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Hesi rn dosage calculation d441
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Showing 10 questions, Sign in for moreA client is receiving a secondary infusion of vancomycin 1,500 mg in 250 ml to be infused over two hours. The intravenous (IV) administration set delivers 15 gtt/ml. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If sounding is required, round to the nearest whole number.)
Explanation
Given Information:
Vancomycin dose: 1,500 mg
Volume: 250 mL
Infusion time: 2 hours
Drop factor: 15 gtt/mL
Calculate the total infusion time in minutes
2 hours x 60 min/hour = 120 minutes
Calculate the total volume to be infused
250 mL
Calculate the infusion rate in mL/min
Infusion rate = Total volume / Infusion time
Infusion rate = 250 mL / 120 min = 2.08 mL/min
Calculate the gtt/min
gtt/min = Infusion rate (mL/min) x Drop factor (gtt/mL)
gtt/min = 2.08 mL/min x 15 gtt/mL = 31.2 gtt/min
Round to the nearest whole number (as instructed)
gtt/min = 31 gtt/min
A client with deep vein thrombosis (DVT) is receiving a continuous IV infusion of heparin sodium 20,000 units in 5% dextrose Injection 500 ml at the rate of 25 mL/hour. How many units of heparin should the client receive in 12 hours? (Enter numeric value only.)
Explanation
Given Information:
Heparin dose: 20,000 units
Volume: 500 mL
Infusion rate: 25 mL/hour
Time: 12 hours
Calculate the total volume infused in 12 hours
Total volume = Infusion rate x Time
Total volume = 25 mL/hour x 12 hours = 300 mL
Calculate the proportion of heparin infused in 12 hours
Proportion = Total volume infused / Total volume
Proportion = 300 mL / 500 mL = 0.6
Calculate the units of heparin infused in 12 hours
Units of heparin = Total heparin units x Proportion
Units of heparin = 20,000 units x 0.6 = 12,000 units
The healthcare provider prescribes interferon bela-1b 0.0625 mg SUBO every other day for a client with multiple sclerosis. The nurse reconstitutes the single-use vial of powder labeled, "0.3 mg with 2 mL of sterile water. How many mil should the nurse administer to the client? (Enter the numerical value only. If rounding is required, sound to the nearest hundredth.)
Explanation
Given Information:
Prescribed dose: 0.0625 mg
Powder in vial: 0.3 mg
Volume of diluent: 1.2 mL
Calculate the concentration of the reconstituted solution
Concentration = Powder in vial / Volume of diluent
Concentration = 0.3 mg / 1.2 mL = 0.25 mg/mL
Calculate the volume of the reconstituted solution to be administered
Volume to be administered = Prescribed dose / Concentration
Volume to be administered = 0.0625 mg / 0.25 mg/mL = 0.25 mL
The healthcare provider prescribes a liter of normal saline IV to be infused over 9 hours for a client who is NPO. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only. If rounding is required, round to the nearest whole number).
Explanation
Given Information:
Volume: 1 liter
Time: 9 hours
Convert liters to milliliters
1 liter = 1000 mL
Calculate the infusion rate
Infusion rate = Volume / Time
Infusion rate = 1000 mL / 9 hours = 111.11 mL/hour
Round to the nearest whole number (as instructed)
Infusion rate = 111 mL/hour
The healthcare provider prescribes cefazolin 800 mg IM every 6 hours. The available vial is labeled, "Cefazolin 1 gram," and instructions for reconstitution state, "For IM use, add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL. How many mL should the nurse administer? (Enter numerical value only. It rounding is required, round to the nearest tenth.)
Explanation
Given Information:
Prescribed dose: 800 mg
Vial label: 1 gram (1000 mg)
Volume after reconstitution: 3.0 mL
Determine the concentration of the reconstituted solution
Concentration = Amount in vial / Volume after reconstitution
Concentration = 1000 mg / 3.0 mL = 333.33 mg/mL
Calculate the volume of cefazolin to be administered
Volume to be administered = Prescribed dose / Concentration
Volume to be administered = 800 mg / 333.33 mg/mL = 2.4 mL
A client is receiving a secondary infusion of azithromycin 500 mg in 500 mL of normal saline (NS) to be infused over 2 hours. The IV administration set delivers 10 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If sounding is required, round to the nearest whole number)
Explanation
Given Information:
Azithromycin dose: 500 mg
Volume: 500 mL
Infusion time: 2 hours
Drop factor: 10 gtt/mL
Calculate the total infusion time in minutes
2 hours x 60 min/hour = 120 minutes
Calculate the total volume to be infused
500 mL
Calculate the infusion rate in mL/min
Infusion rate = Total volume / Infusion time
Infusion rate = 500 mL / 120 min = 4.17 mL/min
Calculate the gtt/min
gtt/min = Infusion rate (mL/min) x Drop factor (gtt/mL)
gtt/min = 4.17 mL/min x 10 gtt/mL = 41.7 gtt/min
Round to the nearest whole number (as instructed)
gtt/min = 42 gtt/min
The nurse is preparing to administer ampicillin PO to a 12-year-old child with impetigo who weighs 88 pounds. The prescription is for 50 mg/kg/day. How many mg should the child receive per day? (Enter numeric value only)
Explanation
Given Information:
Child's weight: 88 pounds
Prescribed dose: 50 mg/kg/day
Convert weight to kilograms
1 pound is approximately 0.453592 kilograms
88 pounds x 0.453592 = 39.94 kilograms (approximately 40 kilograms)
Calculate the daily dose
Daily dose = Prescribed dose x Weight in kg
Daily dose = 50 mg/kg/day x 40 kg = 2000 mg/day
The healthcare provider prescribes 2 L of 5% dextrose in water (DW) IV to infuse in 24 hours. The IV administration set delivers 15 gft/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, rour the nearest whole number.)
Explanation
Given Information:
Volume: 2 liters
Infusion time: 24 hours
Drop factor: 15 gtt/mL
Convert liters to milliliters
2 liters x 1000 mL/liter = 2000 mL
Calculate the total infusion time in minutes
24 hours x 60 min/hour = 1440 minutes
Calculate the infusion rate in mL/min
Infusion rate = Total volume / Infusion time
Infusion rate = 2000 mL / 1440 min = 1.39 mL/min
Calculate the gtt/min
gtt/min = Infusion rate (mL/min) x Drop factor (gtt/mL)
gtt/min = 1.39 mL/min x 15 gtt/mL = 20.85 gtt/min
Round to the nearest whole number (as instructed)
gtt/min = 21 gtt/min
The healthcare provider prescribes a loading dose of digoxin 0.6 mg intravenously (IV) for a client with heart failure (HF) The nurse obtains digoxin Injection 500 meg in 2 mL vial from the electronic medication system. How many ml. should the n administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
Explanation
Given Information:
Prescribed dose: 0.6 mg
Vial concentration: 500 mcg/2 mL
Convert the prescribed dose to micrograms
0.6 mg x 1000 mcg/mg = 600 mcg
Calculate the volume to be administered
Volume to be administered = Prescribed dose / Concentration
Volume to be administered = 600 mcg / 500 mcg/mL = 1.2 mL
The healthcare provider prescribes ganciclovir 375 mg intravenously (IV) every 12 hours to infuse over 90 minutes. The pharmacy delivers ganciclovir 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump (Enter a whole number only)
Explanation
Given Information:
Volume: 150 mL
Infusion time: 90 minutes
Calculate the total infusion time in hours
90 minutes / 60 min/hour = 1.5 hours
Calculate the infusion rate in mL/hour
Infusion rate = Total volume / Infusion time
Infusion rate = 150 mL / 1.5 hours = 100 mL/hour
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