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 A
Explanation
The correct answer is: d. Right lower
Choice A: Right upper
Reason: The right upper quadrant is not typically where fetal heart tones are auscultated when the fetal back is on the right side and the head is in the lower part of the uterus. This area is more likely to be associated with the breech presentation if the fetus’s head is in the fundus.
Choice B: Left upper
Reason: The left upper quadrant would be considered if the fetal back was on the left side and the head was in the fundus. Since the nurse palpated the fetal back on the right side, this option is not applicable.
Choice C: Left lower
Reason: The left lower quadrant would be relevant if the fetal back was on the left side and the head was in the lower part of the uterus. Given the fetal back is on the right side, this is not the correct location.
Choice D: Right lower
Reason: The correct answer is the right lower quadrant. When the nurse palpates a round, firm, movable part (likely the head) in the fundus and a long, smooth surface (the back) on the right side, it indicates that the fetus is in a cephalic (head-down) position with its back on the right. Therefore, the fetal heart tones are best auscultated in the right lower quadrant.
Correct Answer is A
Explanation
Step 1 is to calculate the volume of Toradol to be drawn up. Toradol is available in 60 mg/mL. Therefore, to administer a dose of 30 mg, the nurse would need to draw up 30 mg ÷ 60 mg/mL = 0.5 mL.
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