Exhibits
The practical nurse (PN) notifies the healthcare provider that the client continues to have signs of fluid volume deficit. The health care provider prescribes a continuous infusion of isotonic fluids.
Which fluid(s) is/are classified as isotonic? Select all that apply.
50% dextrose
0.45% sodium chloride
20% dextrose
5% dextrose
5% dextrose with 0.45% sodium chloride
5% dextrose with lactated Ringer's
lactated Ringer's
0.9% sodium chloride
Correct Answer : G,H
A. 50% dextrose
50% dextrose is not isotonic; it is a hypertonic solution. Hypertonic solutions have a higher concentration of solutes compared to the cells, causing water to move out of the cells and into the extracellular space, which does not treat fluid volume deficit effectively.
B. 0.45% sodium chloride
0.45% sodium chloride, also known as half-normal saline, is a hypotonic solution. Hypotonic solutions have a lower concentration of solutes compared to the cells, which would cause water to move into the cells rather than stay in the extracellular space to address fluid volume deficit.
C. 20% dextrose
20% dextrose is a hypertonic solution. It contains a higher concentration of dextrose compared to the extracellular fluid, which draws water into the extracellular space but is not used for treating fluid volume deficits.
D. 5% dextrose
5% dextrose (D5W) is initially isotonic but becomes hypotonic once metabolized, as the dextrose is used up and only water remains. It is not suitable for continuous isotonic fluid therapy for fluid volume deficit.
E. 5% dextrose with 0.45% sodium chloride
5% dextrose with 0.45% sodium chloride is a hypertonic solution. While it starts isotonic, it becomes hypotonic once the dextrose is metabolized, making it unsuitable for long-term isotonic fluid replacement.
F. 5% dextrose with lactated Ringer's
5% dextrose with lactated Ringer's is a hypertonic solution. It contains both dextrose and electrolytes, which are not purely isotonic and may not be ideal for addressing fluid volume deficits on their own.
G. Lactated Ringer's
Lactated Ringer's is an isotonic solution. It has a similar osmolarity to plasma and is used for fluid volume replacement, helping to restore blood volume and maintain electrolyte balance.
H. 0.9% sodium chloride
0.9% sodium chloride, or normal saline, is an isotonic solution. It has the same osmolarity as plasma and is commonly used for fluid volume replacement and maintaining hydration
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Understanding what the voices are saying is the most important initial step in assessing auditory hallucinations. This information helps the PN gauge the content of the hallucinations, which is crucial for developing a treatment plan and determining the level of risk to the client or others.
B. While knowing when the voices are most disturbing provides useful information for managing symptoms, it is less critical than understanding the content of the hallucinations for developing an initial treatment plan.
C. Assessing how the client copes with the voices is important for ongoing management but comes after understanding what the voices are saying. Coping strategies can be developed based on the nature of the hallucinations.
D. Determining which medication works best is not an immediate priority during the initial assessment. Medication effectiveness will be evaluated over time rather than being a primary focus during the first report of hallucinations.
Correct Answer is A
Explanation
A. Folic acid deficiency is the most significant maternal factor associated with the development of spina bifida occulta. Adequate folic acid intake before and during pregnancy is crucial for preventing neural tube defects.
B. Preeclampsia is a serious pregnancy complication but does not have a direct link to spina bifida occulta compared to the impact of folic acid deficiency.
C. A short interval between pregnancies is associated with other risks but is not a known direct cause of spina bifida occulta.
D. Tobacco use has various adverse effects on pregnancy and fetal development but is not as directly linked to the risk of spina bifida occulta as folic acid deficiency.
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