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 A
Explanation
A. This approach involves providing medication education to the client as each medication is administered. While this ensures that the client receives information about each medication in a timely manner, it may not allow for comprehensive education or adequate time for the client to ask questions or clarify information. Additionally, the client may feel overwhelmed by receiving information about multiple medications at once.
B. Incorporating medication education into another activity, such as assisting the client with his bath, can be an efficient use of time. However, it may not provide an optimal environment for focused learning and discussion. The client may be distracted or uncomfortable during the bath, limiting their ability to absorb and retain information effectively.
C. This approach involves providing medication education to the client after discharge via a follow-up phone call. While this allows for more time and flexibility in providing education, it may not address the client's immediate needs or questions prior to discharge. Additionally, the client may have already started taking the medications by the time of the follow-up call, potentially leading to missed opportunities for clarification or adjustment of the medication regimen.
D. Providing written instructions for the client to read at home is an efficient way to ensure that the client has access to information about their medications. This allows the client to review the information at their own pace and refer back to it as needed. However, written instructions alone may not be sufficient for addressing all aspects of medication education, such as potential side effects, drug interactions, or administration techniques.
Correct Answer is A
Explanation
A. "STAT" stands for "immediately" or "at once" in medical terminology. When a medication order is marked as STAT, it means that the medication should be administered as soon as possible, without delay. This abbreviation is used for urgent situations where the medication needs to be given promptly.
B. "PRN" stands for "pro re nata," which translates to "as needed" in Latin. When a medication order is marked as PRN, it means that the medication should be administered as required based on the patient's needs or symptoms. The timing of administration is not fixed but depends on specific conditions or situations, such as pain or nausea.
C. "TID" stands for "ter in die," which translates to "three times a day" in Latin. When a medication order is marked as TID, it means that the medication should be administered three times daily, at regular intervals throughout the day.
D. "QID" stands for "quater in die," which translates to "four times a day" in Latin. When a medication order is marked as QID, it means that the medication should be administered four times daily, at regular intervals throughout the day.
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