The nurse is caring for a client who is being treated with Magnesium Sulphate.
Ordered 2g/hr
Supplied 10g/250ml bag
What would be the correct calculations for the maintenance dose in ml/hr
50mg/hr
50ml/hr
5mg/mi
5ml/hr
The Correct Answer is B
A. 50mg/hr is not the correct unit for volume, it’s the dose in milligrams.
B. 50 mL/hr is the correct volume to administer to achieve the ordered dose of 2g/hr. Determine the concentration of the solution: The supply is 10g in 250mL. This means the concentration is 10g / 250mL, or 0.04g/mL (since 10g = 10,000mg, this is equivalent to 40mg/mL). Convert the ordered dose to match the concentration: The order is for 2g/hr (which is 2,000mg/hr). Calculate the volume to be infused to deliver the desired dose: Dose = Ordered/concentration= 2000/40= 50 mL/hr
C. 5mg/mL refers to the concentration, not the rate of infusion.
D. 5 mL/hr would administer only 200mg/hr, which is much lower than the ordered dose of 2g/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Ferrous sulfate is typically prescribed to prevent or treat iron deficiency anemia, which may be needed postpartum if there was significant blood loss during delivery, but it is not related to the care of a perineal laceration.
B. Methylergonovine is a medication used to prevent or treat postpartum hemorrhage by promoting uterine contraction. While it is important for hemorrhage management, it is not used for perineal laceration care.
C. Bromocriptine is used to suppress lactation in clients who are not breastfeeding, but it is not relevant to a fourth-degree laceration.
D. Docusate is a stool softener, which is often prescribed after a fourth-degree perineal laceration. The client needs to avoid straining during bowel movements, as it could put strain on the perineal area and hinder healing. Docusate helps prevent constipation and reduces the risk of further injury to the perineum.
Correct Answer is B
Explanation
A. Evidence that the newborn is becoming chilled would typically include signs such as cool skin, mottling, or acrocyanosis ,not active behaviors like head movement and eye contact.
B. A good time to initiate breast-feeding is correct. The described behaviors ,eye contact, head movement, and tongue thrusting, are characteristic of the first period of reactivity, which occurs within the first 30 minutes after birth. During this time, the newborn is alert, responsive, and exhibits strong rooting and sucking reflexes, making it an ideal window to begin breastfeeding.
C. The period of decreased responsiveness preceding sleep typically occurs after the first period of reactivity and is marked by reduced activity and interest in feeding, not alert behaviors.
D. A sign that the infant is being overstimulated would usually involve signs like gaze aversion, hiccupping, or flailing ,not purposeful movements or eye contact.
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