The nurse is preparing to hang a bag of 0.9% sodium chloride (normal saline) for a patient who has hyponatremia. The nurse knows that this type of solution is:
Hypotonic and will move fluid out of the vascular space.
Hypertonic and will move fluid into the vascular space.
Isotonic and will expand the vascular space.
Isotonic and will have no effect on fluid movement.
The Correct Answer is C
Choice A reason: This is incorrect because 0.9% sodium chloride (normal saline) is an isotonic solution, not a hypotonic one. Isotonic solutions have the same concentration of solutes as blood plasma and do not cause fluid movement across the cell membrane.
Choice B reason:
This is incorrect because 0.9% sodium chloride (normal saline) is an isotonic solution, not a hypertonic one. Hypertonic solutions have a higher concentration of solutes than blood plasma and cause fluid to move out of the cells and into the vascular space.
Choice C reason:
This is correct because 0.9% sodium chloride (normal saline) is an isotonic solution that will expand the vascular space by adding fluid without changing the concentration of solutes. This is useful for patients with hyponatremia (low sodium level in the blood) who need to restore their fluid and electrolyte balance.
Choice D reason:
This is incorrect because 0.9% sodium chloride (normal saline) is an isotonic solution that will expand the vascular space by adding fluid without changing the concentration of solutes. It will not have no effect on fluid movement, as it will increase the intravascular volume.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason:
Applying warm compresses to the site and elevating the arm may help to reduce pain and swelling, but they do not address the underlying cause of the problem, which is likely infiltration or phlebitis of the IV site. Infiltration occurs when the IV fluid leaks into the surrounding tissue, causing edema, coolness, and pallor. Phlebitis occurs when the vein becomes inflamed, causing pain, erythema, and warmth. Both conditions require immediate removal of the IV catheter and restarting a new IV in another site.
Choice B reason:
Slowing down the infusion rate and documenting the findings may be appropriate actions after removing the IV catheter and starting a new IV in another site, but they are not sufficient to resolve the problem. Slowing down the infusion rate may reduce the discomfort and prevent further complications, but it does not stop the leakage or inflammation of the IV site. Documenting the findings is important for legal and quality improvement purposes, but it does not provide any intervention for the patient's pain or risk of infection.
Choice C reason:
Stopping the infusion, removing the IV catheter, and starting a new IV in another site is the most appropriate action by the nurse. This action prevents further damage to the tissue or vein, reduces the risk of infection, and restores adequate IV access for fluid and medication administration. The nurse should also apply a sterile dressing to the affected site, monitor for signs of infection or complications, and notify the physician if needed. This is the correct answer.
Choice D reason:
Notifying the physician and obtaining an order for an antihistamine is not an appropriate action by the nurse. This action implies that the patient is having an allergic reaction to the IV fluid or medication, which is not supported by the assessment findings. An antihistamine may help to reduce itching or swelling, but it does not address the cause of the pain or prevent further tissue or vein damage. The nurse should notify the physician after removing the IV catheter and starting a new IV in another site, and only if there are signs of infection or complications that require medical intervention.
Correct Answer is ["A","B","C","D"]
Explanation
Choice A reason: Pneumothorax: This is a condition where air accumulates in the pleural space, causing the lung to collapse. It can occur during insertion of a central venous catheter if the needle or catheter punctures the lung or the pleura.
Choice B reason:. Air embolism. This is a condition where air bubbles enter the bloodstream and obstruct blood flow. It can occur during insertion, removal or maintenance of a central venous catheter if air enters the catheter or the vein.
Choice C reason:. Catheter-related bloodstream infection. This is an infection that occurs when microorganisms colonize the catheter or the insertion site and enter the bloodstream. It can cause fever, chills, sepsis and other serious complications. It can be prevented by using strict aseptic technique and following infection control guidelines.
Choice D reason:. Catheter occlusion. This is a condition where the catheter lumen becomes blocked by blood clots, fibrin sheaths, precipitates or kinks. It can impair the infusion or withdrawal of fluids and medications. It can be prevented by flushing the catheter regularly with saline or heparin solutions.
Choice E reason: Hematoma formation. This is a condition where blood accumulates under the skin or in the tissues around the insertion site. It can occur due to bleeding from the punctured vein or artery, or from trauma to the site. It can cause pain, swelling, bruising and infection.
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