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

Answer and Explanation

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.

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Correct Answer is A

Explanation

Choice A reason: Guarding and rebound tenderness are signs of peritonitis, which is a serious complication of colonoscopy. Peritonitis is an inflammation of the peritoneum, the membrane that lines the abdominal cavity. It can be caused by perforation or puncture of the colon during the colonoscopy, which allows bacteria and fecal matter to enter the peritoneal space. The nurse should monitor the client for signs of peritonitis, such as abdominal pain, rigidity, fever, and leukocytosis.

Choice B reason: Nausea and vomiting are not specific signs of a complication of colonoscopy. They may be caused by other factors, such as the sedation, the bowel preparation, or the ingestion of food or fluids after the procedure. Nausea and vomiting may also be symptoms of other conditions, such as gastroenteritis, food poisoning, or pregnancy.

Choice C reason: Diarrhea is not a sign of a complication of colonoscopy. Diarrhea may be a normal consequence of the bowel preparation, which involves taking laxatives or enemas to clear the colon before the procedure. Diarrhea may also be caused by other factors, such as the ingestion of food or fluids after the procedure, or the presence of an underlying bowel disorder, such as irritable bowel syndrome or inflammatory bowel disease.

Choice D reason: Hyperactive bowel sounds are not a sign of a complication of colonoscopy. Hyperactive bowel sounds may indicate increased peristalsis, which is the movement of the digestive tract. Hyperactive bowel sounds may be a normal response to the bowel preparation, the ingestion of food or fluids after the procedure, or the stimulation of the colon during the colonoscopy. Hyperactive bowel sounds may also be present in conditions such as diarrhea, gastroenteritis, or intestinal obstruction.

A. Half-normal saline solution B. 10% dextrose in water C. 5% dextrose and half-normal saline solution D. Lactated Ringer's solution

Correct Answer is D

Explanation

Choice A reason: Half-normal saline solution is a hypotonic solution, which means it has a lower concentration of solutes than the blood plasma. It can cause fluid to shift from the blood vessels into the cells, leading to cellular swelling and edema.

Choice B reason: 10% dextrose in water is a hypertonic solution, which means it has a higher concentration of solutes than the blood plasma. It can cause fluid to shift from the cells into the blood vessels, leading to cellular shrinkage and dehydration.

Choice C reason: 5% dextrose and half-normal saline solution is a hypertonic solution, which has the same effects as choice B. The dextrose increases the osmolarity of the solution, while the half-normal saline provides some electrolytes.

Choice D reason: Lactated Ringer's solution is an isotonic solution, which means it has the same concentration of solutes as the blood plasma. It maintains fluid balance and provides electrolytes such as sodium, potassium, calcium, and lactate. It is commonly used for fluid resuscitation, dehydration, and acidosis.

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A nurse is to administer a hypotonic solution to a patient with a critically high sodium. Which solution is hypotonic?

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Explanation

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Correct Answer is D

Explanation

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