A nurse is to administer a hypotonic solution to a patient with a critically high sodium. Which solution is hypotonic?
0.9% Sodium Chloride
Lactated Ringer's
D5W (5% Dextrose in Water)
0.45% Sodium Chloride
The Correct Answer is D
Choice A reason: This is not a correct answer because 0.9% Sodium Chloride is an isotonic solution, which means it has the same osmolarity as the blood plasma. It does not cause any fluid shifts between the intracellular and extracellular compartments.
Choice B reason: This is not a correct answer because Lactated Ringer's is an isotonic solution, which means it has the same osmolarity as the blood plasma. It does not cause any fluid shifts between the intracellular and extracellular compartments.
Choice C reason: This is not a correct answer because D5W (5% Dextrose in Water) is an isotonic solution when it is in the IV bag, but it becomes hypotonic once it enters the body, as the dextrose is rapidly metabolized and only water remains. However, it is not a preferred solution for a patient with critically high sodium, as it can cause cerebral edema and worsen the neurological status.
Choice D reason: This is a correct answer because 0.45% Sodium Chloride is a hypotonic solution, which means it has a lower osmolarity than the blood plasma. It causes fluid to shift from the extracellular to the intracellular compartment, which can help lower the sodium level and correct the fluid imbalance.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: This is not a correct instruction because drinking a carbonated beverage before bed can worsen the reflux symptoms by increasing the gastric pressure and the production of gas.
Choice B reason: This is not a correct instruction because increasing fatty foods can worsen the reflux symptoms by delaying the gastric emptying and relaxing the lower esophageal sphincter (LES), which allows the stomach acid to flow back into the esophagus.
Choice C reason: This is a correct instruction because elevating the head of the bed when sleeping can help prevent the reflux symptoms by using gravity to keep the stomach contents from flowing back into the esophagus.
Choice D reason: This is not a correct instruction because eating dinner late in the evening can worsen the reflux symptoms by increasing the amount and acidity of the stomach contents, which can easily flow back into the esophagus when lying down. The client should avoid eating within 3 hours of bedtime.
Correct Answer is C
Explanation
Choice A reason: The upper right quadrant is not the correct location for McBurney's point. This quadrant contains the liver, gallbladder, right kidney, and part of the colon. Pain in this area may indicate problems with these organs, such as hepatitis, gallstones, or kidney infection.
Choice B reason: The upper left quadrant is not the correct location for McBurney's point. This quadrant contains the stomach, spleen, left kidney, and part of the colon. Pain in this area may indicate problems with these organs, such as gastritis, splenomegaly, or kidney stones.
Choice C reason: The lower right quadrant is the correct location for McBurney's point. This quadrant contains the appendix, right ovary, and right fallopian tube. McBurney's point is a point on the abdomen that is one-third of the distance from the right anterior superior iliac spine to the umbilicus. Pain in this area may indicate appendicitis, ovarian cyst, or ectopic pregnancy.
Choice D reason: The lower left quadrant is not the correct location for McBurney's point. This quadrant contains the sigmoid colon, left ovary, and left fallopian tube. Pain in this area may indicate problems with these organs, such as diverticulitis, ovarian torsion, or pelvic inflammatory disease.

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