A healthcare provider prescribes a maintenance dose of 2 grams per hour of intravenous magnesium sulfate for a client with preeclampsia.
The IV bag contains 20 grams of magnesium sulfate in 500 mL of 5% dextrose in water.
How many mL/hour should the nurse set the infusion pump to deliver? (Note: This is a medical math, so no options are provided.)
The Correct Answer is ["50"]
To calculate the rate at which the infusion pump should be set, we need to determine how many mL of the solution contain 2 grams of magnesium sulfate.
Step 1: First, we find out how many grams of magnesium sulfate are in 1 mL of the solution. The IV bag contains 20 grams of magnesium sulfate in 500 mL, so we divide 20 grams by 500 mL to get the amount of magnesium sulfate per mL: 20 grams ÷ 500 mL = 0.04 grams/mL
Step 2: Next, we find out how many mL contain 2 grams of magnesium sulfate.
We divide 2 grams by the amount of magnesium sulfate per mL: 2 grams ÷ 0.04 grams/mL = 50 mL Therefore, the nurse should set the infusion pump to deliver 50 mL per hour.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice B rationale
When changing a newborn’s diaper, it is recommended to use clear water for cleaning. This is because newborns have sensitive skin, and clear water is gentle and unlikely to cause irritation.
Choice A rationale
Corn starch powder is not typically recommended for use in diaper changes. While it can help absorb moisture, it can also create a paste with the stool that is difficult to clean and can potentially cause skin irritation.
Choice C rationale
Talcum powder is not recommended for use in diaper changes. It can cause respiratory problems if inhaled by the baby.
Choice D rationale
While baby lotion can be used to moisturize a baby’s skin, it is not typically used during diaper changes. It does not have the same cleaning properties as water and can leave a residue on the skin.
Correct Answer is C
Explanation
Choice A rationale
Unilateral lower leg pain is not a normal finding postpartum and could indicate a deep vein thrombosis, which requires immediate medical attention.
Choice B rationale
A soft, spongy fundus is not a normal finding postpartum. The uterus should be firm to prevent excessive bleeding.
Choice C rationale
A pulse rate of 56 beats/minute can be a normal finding postpartum. Pregnancy increases blood volume and cardiac output, and these changes can persist for some time after delivery.
Choice D rationale
Saturating two perineal pads per hour is not a normal finding postpartum and could indicate excessive bleeding.
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