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: Pale yellow is the normal color of urine, indicating adequate hydration and no bilirubin in the urine. Bilirubin is a pigment that is produced when red blood cells are broken down. It is normally excreted in the bile, but if the bile duct is obstructed, it can accumulate in the blood and urine, causing jaundice and dark urine.
Choice B reason: Red urine can indicate blood in the urine, which can be caused by various conditions such as urinary tract infection, kidney stones, trauma, or cancer. It is not related to bile duct obstruction or cholecystitis.
Choice C reason: Greenish-brown urine can indicate bilirubin in the urine, which can be caused by bile duct obstruction or liver disease. It is a sign of cholestasis, which is a reduced or stopped flow of bile. The nurse should monitor the client for other signs of cholestasis such as jaundice, clay-colored stools, pruritus, and abdominal pain.
Choice D reason: Dark and concentrated urine can indicate dehydration, which can be caused by various factors such as fluid loss, fever, vomiting, or diarrhea. It is not related to bile duct obstruction or cholecystitis.
Correct Answer is B
Explanation
Choice A reason: This is not a correct answer because intracorporeal lithotripsy is a procedure that uses a laser or an ultrasonic probe to break up gallstones inside the gallbladder or the bile ducts. It is not a preferred treatment for cholecystitis, as it does not remove the inflamed gallbladder.
Choice B reason: This is a correct answer because laparoscopic cholecystectomy is a surgery that removes the gallbladder through small incisions in the abdomen. It is the preferred treatment for cholecystitis, as it eliminates the source of inflammation and prevents further complications.
Choice C reason: This is not a correct answer because extracorporeal shock wave lithotripsy (ESWL) is a procedure that uses shock waves to break up gallstones outside the body. It is not a preferred treatment for cholecystitis, as it does not remove the inflamed gallbladder and may not be effective for all types of gallstones.
Choice D reason: This is not a correct answer because methyl tertiary butyl ether (MTBE) infusion is a procedure that uses a chemical solvent to dissolve gallstones inside the gallbladder. It is not a preferred treatment for cholecystitis, as it does not remove the inflamed gallbladder and may cause side effects such as nausea, vomiting, and liver damage.
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