50 grams of Magnesium sulfate is added to 1L of Lactated Ringers.
After giving an initial loading dose, the nurse is to infuse a maintenance dose of 2 gm/hr. What rate should the IV pump be set at?
10 mL/hr
20 mL/hr
30 mL/hr
40 mL/hr
The Correct Answer is D
Step 1 is to calculate the total amount of Magnesium sulfate in the solution. This is done by multiplying the amount of Magnesium sulfate per mL (which is 50g/L or 0.05g/mL) by the total volume of the solution (which is 1000mL). So, 0.05g/mL × 1000mL = 50g.
Step 2 is to calculate the rate of the IV pump. The maintenance dose is 2g/hr. So, if there are 50g in 1000mL, then 2g would be in (2g ÷ 50g) × 1000mL = 40mL. Therefore, the IV pump should be set at 40 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
-
G (Gravida): Total number of pregnancies → 4
-
T (Term births): Delivered at 37 weeks or more → One (39 weeks) → T = 1
-
P (Preterm births): Delivered between 20–36 weeks → Twins (34 weeks, 1 pregnancy) + One at 35 weeks = 2 preterm pregnancies → P = 2
-
A (Abortions): Pregnancies ending before 20 weeks → 0
-
L (Living children): One from term birth, two from twins, and one from the other preterm = 4 living children → L = 4
Correct Answer: D. G4 T1 P2 A0 L4
Correct Answer is ["C","D","E"]
Explanation
The correct answers are Choices C, D, and E.
Choice A rationale
Fetal neck translucency is not typically evaluated during a biophysical profile. It is usually assessed during a first trimester ultrasound to screen for chromosomal abnormalities.
Choice B rationale
Fetal gender is not typically evaluated during a biophysical profile. The focus of a biophysical profile is on assessing the health and well-being of the fetus.
Choice C rationale
Fetal motion is one of the aspects evaluated during a biophysical profile. It is assessed to determine the activity level of the fetus.
Choice D rationale
Fetal breathing is one of the aspects evaluated during a biophysical profile. It is assessed to determine the respiratory function of the fetus.
Choice E rationale
Amniotic fluid volume is one of the aspects evaluated during a biophysical profile. It is assessed to determine the amount of amniotic fluid surrounding the fetus.
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