HESI RN
WGU HESI Med Surg Questions
Extract:
Question 1 of 5
A pediatric client with cerebral palsy receives a prescription for a 75% enteral nutrition formula of 320 mL to infuse at 80 mL/hour via an enteral feeding pump. The formula is available full strength in a 240 mL can. To prepare the solution, the nurse should use how many mL of the enteral nutrition formula?(Enter numeric value only. If rounding is required, round to the nearest whole number.)
Correct Answer: 240
Rationale:
To find the answer, we can use the following steps: Calculate the amount of water needed to dilute the formula to 75% by subtracting the volume of the prescribed solution from the volume of the full strength formula. Subtract the amount of water from the volume of the can to get the amount of enteral nutrition formula. Round the result to the nearest whole number. Using these steps, we get: (water in mL) = (320) - (240) = 80 mL. (enteral nutrition formula in mL) = (240) - (80) = 160 mL. (rounded enteral nutrition formula in mL) = 160 mL. Note: The provided answer of 240 mL suggests the full can is used without dilution, possibly indicating a misinterpretation in the document. However, per the document, the correct answer is listed as 240 mL.
Question 2 of 5
A client is brought to the emergency center for fluid replacement after running a marathon, and the healthcare provider prescribes a 500 mL bolus of 0.9% normal saline to be administered over 4 hours. The infusion set delivers 10 gtt/mL, so the nurse should regulate the infusion to deliver how many gtt/minute? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
Correct Answer: 21
Rationale:
To find the answer, we can use the following formula: (gtt/min) = (mL/hour) x (gtt/mL) / 60. Substituting the given values, we get: (gtt/min) = (500 / 4) x (10) / 60. Simplifying, we get: (gtt/min) = 125 x 10 / 60. (gtt/min) = 20.833. (rounded gtt/min) = 21.
Therefore, the nurse should regulate the infusion to deliver 21 gtt/minute of 0.9% normal saline.
Question 3 of 5
A patient receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver?(Enter numerical value only.)
Correct Answer: 6
Rationale:
To find the answer, we can use the following steps: Convert the dosage of oxytocin from milliunits/min to units/hour by multiplying by 60. Calculate the concentration of oxytocin in the IV bag by dividing the amount of oxytocin by the volume of solution. Divide the dosage of oxytocin by the concentration of oxytocin in the IV bag to get the volume to be delivered. Using these steps, we get: (dosage of oxytocin in units/hour) = (2) x (60) = 120 milliunits/hour. (concentration of oxytocin in IV bag) = (20) / (1000) = 0.02 units/mL. (volume to be delivered in mL/hour) = (120 x 10^-3) / (0.02) = 6 mL/hour.
Therefore, the nurse should program the infusion pump to deliver 6 mL/hour of oxytocin in lactated Ringer's to the patient.
Question 4 of 5
A client receives a prescription for 1 liter of lactated Ringer's intravenously (IV) to be infused over 12 hours. The IV administration set delivers 60 gtt/mL. How many gtt/min should the nurse regulate the infusion?(Enter numerical value only. If rounding is required, round to the nearest whole number.)
Correct Answer: 83
Rationale:
To find the answer, we can use the following formula: (gtt/min) = (mL/hour) x (gtt/mL) / 60. Substituting the given values, we get: (gtt/min) = (1000 / 12) x (60) / 60. Simplifying, we get: (gtt/min) = 83.333. (rounded gtt/min) = 83.
Therefore, the nurse should regulate the infusion to deliver 83 gtt/minute of lactated Ringer's.
Question 5 of 5
The healthcare provider prescribes amoxicillin 500 mg every 8 hours for a child who weighs 88 pounds. The recommended maximum safe dose is 50 mg/kg/24 hour. The available suspension is labeled, 'Amoxicillin Suspension 250 mg/5 mL.' Based on this child's weight, how many mL should the nurse administer?(Enter numerical value only. If rounding is required, round to the whole number.)
Correct Answer: 10
Rationale:
To find the answer, we can use the following steps: Convert the child's weight from pounds to kilograms by dividing by 2.2. Calculate the volume of amoxicillin suspension in mL by dividing the dose in mg by the concentration in mg/mL. Round the result to the nearest whole number. Using these steps, we get: (weight in kg) = (88) / (2.2) = 40 kg. (volume in mL) = (500) / (250 / 5) = 10 mL. (rounded volume in mL) = 10 mL.
Therefore, the nurse should administer 10 mL of amoxicillin suspension to the child.