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 D
Explanation
Choice A reason: Excessive stomach acid secretion is not the correct answer because it is not a diagnostic test, but a possible cause of peptic ulcer disease. Peptic ulcers are sores that develop in the lining of the stomach or duodenum due to damage from stomach acid and digestive enzymes.
Choice B reason: An incompetent pyloric sphincter is not the correct answer because it is not a diagnostic test, but a possible complication of peptic ulcer disease. The pyloric sphincter is a muscular valve that controls the passage of food from the stomach to the small intestine. If it becomes damaged or weakened, it can cause gastric outlet obstruction, which is a blockage of the stomach.
Choice C reason: A metabolic acid-base imbalance is not the correct answer because it is not a diagnostic test, but a possible consequence of peptic ulcer disease. Peptic ulcers can cause bleeding, perforation, or gastric outlet obstruction, which can affect the acid-base balance of the body. For example, vomiting can cause metabolic alkalosis, which is a condition where the blood is too alkaline.
Choice D reason: An infection with Helicobacter pylori is the correct answer. Helicobacter pylori is a type of bacteria that can infect the stomach and duodenum and cause inflammation and ulcers. It is the most common cause of peptic ulcer disease. The health care provider can order a diagnostic test to detect the presence of Helicobacter pylori in the client's stomach or blood, such as a urea breath test, a stool antigen test, or a blood antibody test.
Correct Answer is A
Explanation
Choice A reason: This is a correct finding for a client with an obstruction of the common bile duct. Fatty stools are caused by the reduced or absent flow of bile into the intestine, which impairs the digestion and absorption of fats.
Choice B reason: This is not a correct finding for a client with an obstruction of the common bile duct. Tenderness in the left upper abdomen may indicate a problem with the spleen, the stomach, or the pancreas, but not the bile duct.
Choice C reason: This is not a correct finding for a client with an obstruction of the common bile duct. Ecchymosis of the extremities is a bruising of the skin due to bleeding under the surface. It may be caused by trauma, medication, or bleeding disorders, but not by bile duct obstruction.
Choice D reason: This is not a correct finding for a client with an obstruction of the common bile duct. Pale-colored urine is a sign of dilute or low concentration of urine, which may be caused by excessive fluid intake, diabetes insipidus, or kidney failure, but not by bile duct obstruction.
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