A client is receiving an intravenous (IV) solution over a short amount of time to replace volume losses. The nurse understands that this IV solution is most likely to be:
isotonic.
hypotonic.
hypertonic.
Hyperosmotic
The Correct Answer is A
A. Isotonic solutions have a similar osmolarity to that of blood plasma, meaning they exert the same osmotic pressure as blood. This equilibrium prevents the movement of water across cell membranes, thereby maintaining cell volume and preventing cellular dehydration or swelling. Examples of isotonic solutions commonly used for intravenous fluid replacement include 0.9% saline (normal saline) and lactated Ringer's solution.
B. Hypotonic solutions have a lower osmolarity than blood plasma, meaning they exert less osmotic pressure than blood. When administered, hypotonic solutions cause water to move into cells, leading to cellular swelling. While hypotonic solutions can help hydrate cells and replenish intracellular fluid, they are not typically used for rapid volume replacement because they can exacerbate extracellular fluid deficits and cause complications such as cerebral edema or cardiovascular collapse.
C. Hypertonic solutions have a higher osmolarity than blood plasma, meaning they exert greater osmotic pressure than blood. When administered, hypertonic solutions cause water to move out of cells, leading to cellular shrinkage. Hypertonic solutions are often used to expand intravascular volume in cases of severe hypovolemia or shock, as they rapidly increase blood osmolarity and draw fluid from the interstitial space into the bloodstream. Examples of hypertonic solutions include 3% saline and 5% dextrose in 0.9% saline.
D. Hyperosmotic solutions have an elevated osmolarity compared to blood plasma, indicating a higher concentration of solutes. These solutions exert osmotic pressure that draws water out of cells, leading to cellular dehydration. While hyperosmotic solutions are not commonly used for rapid volume replacement due to their pot
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
B. When a client experiences symptoms of extravasation, such as pain, burning, and swelling, especially with a vesicant medication, the priority is to stop the infusion and remove the catheter immediately to prevent further tissue damage. Removing the catheter promptly helps minimize the amount of medication that may have leaked into the surrounding tissues.
A. Elevating the extremity on a pillow may help reduce swelling and discomfort in some cases, but it is not the first action the nurse should take when a vesicant medication has caused pain, burning, and swelling at the IV site.
C. Keeping the catheter in place is not advisable when extravasation has occurred, especially with a vesicant medication. Continuing the infusion could lead to further tissue damage and exacerbate the client's symptoms. Removing the catheter is necessary to prevent additional medication from entering the surrounding tissues.
D. While applying a cool compress may provide temporary relief from discomfort, it is not the first action the nurse should take when managing extravasation caused by a vesicant medication. The priority is to stop the infusion, remove the catheter, and assess the extent of tissue damage. Cool compresses may be used after the catheter removal to help reduce swelling and discomfort.
Correct Answer is A
Explanation
A. Infiltration occurs when the intravenous solution leaks into the surrounding tissue instead of flowing into the vein. This can cause discomfort, swelling, and potential tissue damage. Stopping the infusion immediately helps prevent further infiltration and minimizes the risk of complications such as tissue necrosis or damage.
B. While documenting the findings is important for the client's medical record, it is not the first action to take when suspecting infiltration. Immediate intervention to stop the infusion and assess the site for complications takes precedence over documentation.
C. Flushing the catheter with normal saline may be necessary after stopping the infusion to ensure patency and clear any remaining solution from the catheter. However, this step should follow the immediate cessation of the infusion to prevent further infiltration.
D. Removing the catheter may be necessary if significant infiltration has occurred or if there are signs of tissue damage. However, this should be done after stopping the infusion to prevent further infiltration and should be based on the assessment findings and healthcare provider's instructions.
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