A nurse is caring for a client who is receiving parenteral nutrition (PN) through a central venous catheter (CVC).
The current PN bag is empty, and a new PN bag is not available at this time.
Which of the following solutions should the nurse infuse until a new PN bag is available?
0.9% sodium chloride
Lactated Ringer’s
Dextrose 10% in water
Dextrose 5% in water.
The Correct Answer is C
Dextrose 10% in water. This is because parenteral nutrition (PN) is a mixture of nutrients that is given through a central venous catheter (CVC) that goes directly to the heart. PN contains high concentrations of nutrition and calories, and if the PN bag is empty, it needs to be replaced with a solution that has a similar osmolarity to prevent complications such as hypoglycemia (low blood sugar) or phlebitis (inflammation of the vein). Dextrose 10% in water has an osmolarity of about 500 mOsm/L, which is close to the osmolarity of PN solutions.
Choice A is wrong because 0.9% sodium chloride has an osmolarity of about 300 mOsm/L, which is lower than PN solutions and can cause fluid overload and electrolyte imbalance.
Choice B is wrong because lactated Ringer’s has an osmolarity of about 275 mOsm/L, which is also lower than PN solutions and can cause similar problems as 0.9% sodium chloride.
Choice D is wrong because dextrose 5% in water has an osmolarity of about 250 mOsm/L, which is much lower than PN solutions and can cause rapid drop in blood sugar and vein irritation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
This is because hypoglycemia in newborns can cause seizures, brain damage, and developmental delays, and frequent monitoring can help detect and correct low blood glucose levels promptly.
Some additional information about the other choices are:
Choice B. Administer glucagon subcutaneously as prescribed.This is wrong because glucagon is used to treat hypoglycemia caused by hyperinsulinism, which is a rare condition in newborns.Most cases of hypoglycemia in term infants are due to transient factors such as delayed feeding, maternal diabetes, or perinatal stress.
Choice C. Discontinue IV dextrose when blood glucose reaches 60 mg/dL.This is wrong because 60 mg/dL is still below the normal range of blood glucose for newborns, which is 70 to 100 mg/dL.Discontinuing IV dextrose too early can cause rebound hypoglycemia and increase the risk of neurologic complications.
Choice D. Feed breast milk or formula every four hours.This is wrong because feeding every four hours may not be enough to maintain adequate blood glucose levels in newborns with hypoglycemia.Infants with hypoglycemia should be fed more frequently, such as every two to three hours, or on demand.Breast milk or formula can also be supplemented with IV dextrose if needed.
Correct Answer is B
Explanation
Institute contact precautions.This is because the infant may havenecrotizing enterocolitis (NEC), which is the most common cause of bloody stool in preterm infants.
NEC is a serious condition that involves inflammation and necrosis of the intestinal wall and can lead to perforation, sepsis, and death.NEC is also a potential source of infection for other infants in the NICU, so contact precautions are necessary to prevent cross-contamination.
Choice A is wrong because obtaining a rectal temperature is not indicated for an infant with bloody stool.Rectal temperature can cause irritation and bleeding of the rectal mucosa and can also increase the risk of perforation if there is intestinal necrosis.
Choice C is wrong because decreasing the amount of the feeding is not enough to manage an infant with bloody stool.
The infant may need to have the feeding stopped completely and receive parenteral nutrition until the bowel heals.Decreasing the feeding may also compromise the infant’s growth and development.
Choice D is wrong because assessing for abdominal distention is not a nursing action but a nursing assessment.
Abdominal distention is a common sign of feeding intolerance and NEC, but it is not specific or sensitive enough to diagnose the condition.Other signs and symptoms of NEC include bile-stained or bloody gastric residuals, emesis, diarrhea, temperature instability, apnea, bradycardia, hypotension, and lethargy.
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