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RN Dosage Calculation Critical Care

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Exam Details !

Title : RN Dosage Calculation Critical Care

Type : Nursing

Category : RN Nursing Exam(s)

Subcategory : ATI Exam(s)

Domain : RN ATI Dosage Calculations

Fragment : N/A

Module : RN-NURSING

Exam Status : active

Rating : 95.00%

Attempts Allowed : 100

Exam Year : 2023

Duration : 60 minutes

Total Questions : 10

Passing Score : 100%

Difficulty : Easy

Instructions : Read each question carefully and select the correct answer. Ensure you manage your time effectively to complete all questions within the given timeframe, as answers cannot be changed after submission.

Description : This exam assesses students' proficiency in dosage calculations, including drug conversions, IV flow rates, weight-based dosing, and safe medication administration. Numerical calculation-based questions.

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1 : A nurse is preparing to administer 0.9% sodium chloride IV infusion I-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.)

Hint : Always divide the total mL by the infusion rate to determine the time.

Correct Answers:

Rationale :

Use the formula: Total Volume (mL)/Infusion Rate (mL/hr) Substitute values: 1000/200=5hrs

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2 : 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.)

Hint : Convert hours to minutes before calculating gtt/min.

Correct Answers:

Rationale :

Use the formula: Total Volume× Drop Factor/Infusion Time (min) Convert hours to minutes;6×60=360 minutes Calculate drops per minute:1000×10/360=28 gtt/min

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3 : 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.)

Hint : Use a small-volume syringe for accurate subcutaneous injections.

Correct Answers:

Rationale :

Use the formula: Ordered Dose/Available Dose× Volume Substitute values:30/40×1=0.8 mL

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4 : A nurse is completing an 8-hr 1&0 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?

Hint : Count ice chips as half of their volume when measuring fluid intake.

Correct Answers:

Rationale :

Convert ounces to mL (1 oz = 30 mL):Juice: 4 × 30 = 120 mL Tea: 6 × 30 = 180 mL Ice chips (half count): 100 ÷ 2 = 50 mL IV bolus: 150 mL Broth: 8 × 30 = 240 mL Add all values: 120+180+50+150+240=790 mL

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5 : 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.)

Hint : Always convert pounds to kilograms before calculating weight-based medication doses.

Correct Answers:

Rationale :

Convert weight to kg:245÷2.2=111.4 kg Calculate dose:5×111.4=167 mg

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6 : 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.)

Hint : Always divide the total volume by the time in minutes before applying the drop factor.

Correct Answers:

Rationale :

Convert hours to minutes:3×60=180 min Calculate drops per minute: 150×10/180=8 gtt/min

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7 : 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.)

Hint : Convert micrograms to milligrams before determining the volume needed.

Correct Answers:

Rationale :

Convert weight to kg:33÷2.2=15 kg Calculate total daily dose:8×15=120 mcg Divide by 2 doses per day:120÷2=60 mcg per dose Convert to mg: 60 mcg = 0.06 mg Convert to mL:0.06/0.05=1.2ml

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8 : 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.)

Hint : Convert infusion time to minutes before calculating the pump rate.

Correct Answers:

Rationale :

Use the formula:Total Volume×60/infusion time Substitute values:50× 60/30=100ml/hr

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9 : 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 wholenumber. Use a leading zero if it applies. Do not use a trailing zero.)

Hint : For intermittent IV boluses, use the total volume and time to determine the rate.

Correct Answers:

Rationale :

Use the same formula as question 8 since 50 mL in 30 minutes gives the same rate.

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10 : 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?

1600

1800

1700

1500

Hint : divide the remaining volume by the current infusion rate to determine how long it will last.

Correct Answers:

1800

Rationale :

Calculate infusion rate:1000÷8=125 mL/hr Calculate remaining time for 500 mL:500÷125=4 hours Add 4 hours to the current time (1400): 1800

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