A physician orders an isotonic IV solution for a client. Which solution should the nurse plan to administer?
Half-normal saline solution
10% dextrose in water
5% dextrose and half-normal saline solution
Lactated Ringer's solution
The Correct Answer is D
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: This is not a correct finding for hypervolemia. Hypotension is a low blood pressure, which can be caused by hypovolemia (low blood volume) or other factors. Hypervolemia is an excess of fluid in the body, which can increase the blood pressure.
Choice B reason: This is not a correct finding for hypervolemia. Bradycardia is a slow heart rate, which can be caused by heart block, medication, or other factors. Hypervolemia can cause tachycardia (fast heart rate) as the heart tries to pump the excess fluid.
Choice C reason: This is a correct finding for hypervolemia. Peripheral edema is a swelling of the extremities due to fluid accumulation in the tissues. Hypervolemia can cause peripheral edema as the fluid leaks from the blood vessels into the interstitial spaces.
Choice D reason: This is not a correct finding for hypervolemia. Weight loss is a decrease in body weight, which can be caused by dehydration, malnutrition, or other factors. Hypervolemia can cause weight gain as the body retains more fluid.
Correct Answer is D
Explanation
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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