Lactated Ringers solution does not affect the fluid balance of surrounding cells and tissues; therefore, it is classified as an
Hypertonic
hypotonic
therapeutic
isotonic
The Correct Answer is D
A. hypertonic: Hypertonic solutions have a higher solute concentration than plasma, pulling water out of cells and shrinking them. Lactated Ringer’s does not draw water from cells, so it is not classified as hypertonic.
B. therapeutic: "Therapeutic" refers to the intended treatment effect of a medication or fluid but is not a classification related to the osmolarity or fluid balance behavior of a solution.
C. isotonic: Lactated Ringer's has a similar osmolarity to plasma, meaning it does not cause water to move into or out of cells. Because it maintains fluid balance across cell membranes, it is accurately classified as an isotonic solution.
D. hypotonic: Hypotonic solutions have a lower solute concentration than body fluids, causing water to move into cells and potentially leading to cellular swelling. Lactated Ringer's does not cause this shift and therefore is not hypotonic.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. the remaining volume and original time: Using the original time does not reflect how much time is actually left for the infusion. This could lead to under- or over-infusion if the clock has already started.
B. the original volume and time: This method is used only at the start of the infusion. Once some fluid has already infused, this combination is no longer valid for adjusting the current flow rate.
C. the remaining volume and time: To accurately adjust the flow rate mid-infusion, the nurse must use the amount of fluid left to infuse and the remaining time ordered for the infusion. This ensures the patient receives the correct volume within the prescribed timeframe.
D. the original volume and remaining time: Using the full original volume over the shortened remaining time would lead to an excessively high flow rate, potentially causing fluid overload or complications.
Correct Answer is A
Explanation
- Calculate the total milligrams of fluconazole in the prescription.
Total milligrams = Concentration (mg/mL) × Total volume (mL)
= 40 mg/mL × 25 mL
= 1000 mg.
Fluconazole used on the first day = 200 mg.
- Calculate the remaining milligrams of fluconazole after the first day.
Remaining milligrams = Total milligrams - First-day dose
= 1000 mg - 200 mg
= 800 mg.
- Calculate the number of days the remaining medication will last.
Daily dose after the first day = 100 mg.
Remaining days = Remaining milligrams / Daily dose
= 800 mg / 100 mg/day
= 8 days.
- Calculate the total days' supply.
Total days' supply = Day 1 + Remaining days
= 1 day + 8 days
= 9 days.
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