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410 Dosage Calculation
ATI 410 Dosage Calculation
Total Questions : 50
Showing 10 questions Sign up for moreA nurse is preparing to administer 0.9% sodium chloride IV infusion 1-L bag at a rate of 200 mL/hr for a client who has rhabdomyolysis. The nurse should expect the IV pump to infuse over how many hours? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Total volume to be infused = 1000 mL
Desired infusion rate = 200 mL/hr
To determine the infusion time, we can use the formula:
Infusion time (hours) = Total volume (mL) / Infusion rate (mL/hr)
Substituting the values:
Infusion time = 1000 mL / 200 mL/hr = 5 hours
Therefore, the IV pump will infuse for 5 hours.
A nurse is preparing to administer 000 mL of lactated Ringer's IV over 6 hr. The drop factor of the manual IV tubing is 10 gtt/mL. The nurse should set the manual IV infusion to deliver how many gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculate the total infusion time in minutes:
6 hours X 60 minutes/hour = 360 minutes
Calculate the total number of drops:
1000 mL X 10 gtt/mL = 10,000 gtt
Calculate the drip rate:
Drip rate (gtt/min) = Total drops / Total infusion time (minutes)
Drip rate = 10,000 gtt / 360 minutes = 27.78 gtt/min
Rounded to the nearest whole number, the drip rate is 28 gtt/min.
A client is to receive enoxaparin 30 mg subcutaneously. Available is enoxaparin 40 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Desired dose = 30 mg
Available concentration = 40 mg/mL
To calculate the volume to administer, use the formula:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 30 mg / 40 mg/mL = 0.75 mL
Rounded to the nearest tenth, the nurse should administer 0.8 mL of enoxaparin.
A nurse is completing an 8-hr 1&O record for a client who consumed 4 oz juice. 6 oz tea, a 100 mL cup full of ice chips. an IV bolus of 150 mL, and 8 oz broth. The nurse should record how many mL of intake on the client's record?
Explanation
Here's the breakdown of the calculations:
1 ounce = 30 mL
4 oz juice = 4 X 30 mL = 120 mL
6 oz tea = 6 X 30 mL = 180 mL
8 oz broth = 8 X 30 mL = 240 mL
Total intake = 120 mL + 180 mL + 100 mL + 150 mL + 240 mL = 790 mL
Since ice chips are mostly water, they are counted as intake.
Therefore, the nurse should record 790 mL of intake on the client's record.
A nurse is caring for a client who has a pulmonary embolism and has a new prescription for enoxaparin 5mg/kg/dose subcutaneous every 12 hr. The client weighs 245 lbs. How many mg should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Convert pounds to kilograms: 245 lbs / 2.2 lbs/kg = 111.36 kg
Calculate the enoxaparin dose: 1.5 mg/kg X 111.36 kg = 167.04 mg
Round to the nearest whole number: 167 mg
Therefore, the nurse should administer 167 mg of enoxaparin per dose.
A nurse is preparing to administer dextrose 5% in water (DSW) 150 mL IV to infuse over 3 hr. The drop factor of the manual IV tubing is 10 gtt/mL. The nurse should set the manual IV infusion to deliver how many gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Convert hours to minutes: 3 hours X 60 minutes/hour = 180 minutes
Calculate the total number of drops: 150 mL X 10 gtt/mL = 1500 gtt
Calculate the drip rate: 1500 gtt / 180 minutes = 8.33 gtt/min
Round to the nearest whole number: 8 gtt/min
A nurse is preparing to administer digoxin 8 mcg/kg/day PO to divide equally every 12 hr for a preschooler who weighs 33 lb. Available is digoxin elixir 0.05 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Here's how to calculate the digoxin dosage:
1. Convert the child's weight to kilograms:
- There are approximately 2.2 pounds in 1 kilogram.
- 33 lbs / 2.2 lbs/kg = 15 kg
2. Calculate the total daily dose:
- The child needs 8 mcg of digoxin per kilogram of weight per day.
- 8 mcg/kg * 15 kg = 120 mcg
3. Calculate the dose per administration:
- The daily dose is divided into two doses (every 12 hours).
- 120 mcg / 2 = 60 mcg
4. Convert the dose per administration to milligrams:
- There are 1000 mcg in 1 mg.
- 60 mcg / 1000 mcg/mg = 0.06 mg
5. Calculate the volume to administer:
- The digoxin elixir has a concentration of 0.05 mg/mL.
- 0.06 mg / 0.05 mg/mL = 1.2 mL
A nurse is preparing to administer clindamycin 300 mg by intermittent IV bolus over 30 min to a client who has a staphylococci infection. Available is clindamycin premixed in 50 mL 0.90% sodium chloride (NaCl). The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Convert minutes to hours: 30 minutes = 0.5 hours
Calculate the infusion rate: 50 mL / 0.5 hours = 100 mL/hr
A nurse is preparing to administer ticarcillin/clavulanate 3.1 g by intermittent IV bolus over 30 min. Available is ticarcillin/clavulanate 3.1 g in 50 mL 0.9% sodium chloride (NSS). The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the IV pump rate in mL/hr, follow these steps:
Total volume to be infused: 50 mL
Infusion time: 30 minutes
Convert the infusion time to hours:
30 minutes ÷ 60 minutes/hour = 0.5 hours
Calculate the IV pump rate:
Rate (mL/hr) = Total volume (mL) ÷ Infusion time (hours)
Rate = 50 mL ÷ 0.5 hours = 100 mL/hr
The nurse should set the IV pump to deliver 100 mL/hr.
A nurse is reviewing a client's prescription for 1.000 mL of 5% dextrose in water IV to infuse over 8 hr. At 1400, the nurse observes that there is 500 mL of solution remaining in the client's current IV bag. At what time should the nurse administer the next bag of IV solution?
Explanation
A) 1600: If the nurse were to administer the next bag at 1600, it would imply that the current solution would need to last only 2 more hours. However, with 500 mL remaining and a total infusion time of 8 hours, this timing would not align with the need to complete the full infusion period appropriately.
B) 1800: Since the IV solution is meant to be infused over 8 hours and 500 mL (half of the total 1,000 mL) has been infused by 1400, the remaining 500 mL should also be infused over the next 4 hours. Infusing the next bag at 1800 would ensure that the entire 8-hour infusion time is met correctly.
C) 1700: Administering the next bag at 1700 would mean that there would be only 3 hours left to infuse the remaining solution. This timing would not allow for a complete 8-hour infusion period as required.
D) 1500: If the nurse were to administer the next bag at 1500, it would be too early, as only 2 hours would have passed since starting the current bag. This would not be appropriate given the need to infuse the solution over the full 8-hour period.
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