A patient in active labor is prescribed oxytocin 12 milliunits/min intravenously (IV). The IV bag contains 5 units of oxytocin in 500 mL of lactated Ringer’s solution.
How many mL/hour should the nurse set the infusion pump to? (Enter numerical value only) .
The Correct Answer is ["0.72"]
Step 1 is to calculate the total amount of oxytocin in the IV bag. This is done by multiplying the total volume of the bag by the concentration of oxytocin. In this case, the bag contains 5 units of oxytocin in 500 mL, so the concentration is 5 units ÷ 500 mL = 0.01 units/mL.
Step 2 is to convert the prescribed dose from milliunits/min to units/hour. There are 1000 milliunits in a unit and 60 minutes in an hour, so 12 milliunits/min = 12 ÷ 1000 units/min = 0.012 units/min. Then, 0.012 units/min × 60 min/hour = 0.72 units/hour.
Step 3 is to calculate the infusion rate in mL/hour. This is done by dividing the prescribed dose in units/hour by the concentration of oxytocin in units/mL. So, 0.72 units/hour ÷ 0.01 units/mL = 72 mL/hour. Therefore, the nurse should set the infusion pump to 72 mL/hour.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["-"]
Explanation
Step 1: The patient’s vital signs are as follows: Temperature 100.4° F (38° C) orally, Heart rate 86 beats/minute, Respiratory rate 16 breaths/minute, Blood pressure 102/12 mm Hg, Pain 4 on a 0 to 10 pain scale.
Step 2: She was assisted to the bathroom where she voided 150 mL of clear yellow urine. Lochia rubra is moderate with small clots, no foul odor noted. The fundus is firm at the umbilicus. The episiotomy edges are well approximated, with no redness, edema, drainage, or ecchymosis. There is no pain, redness, or swelling in the calves.
Step 3: A 1,000 mL bag of lactated Ringer’s solution containing 10 units of oxytocin is infusing via an 18-gauge peripheral IV in the left forearm at 125 mL per hour, with 500 mL remaining in the bag. The IV is patent, without redness or swelling, and can be discontinued when this bag’s infusion is complete.
Correct Answer is B
Explanation
Choice A rationale
Immediately after delivery, the breasts of a new mother are not likely to remain the same as before delivery. Hormonal changes during pregnancy prepare the breasts for lactation, and these changes do not typically revert immediately after delivery.
Choice B rationale
On the first postpartum day, the breasts of a new mother are most likely to be filling and secreting colostrum. Colostrum is the first form of milk produced by the mammary glands, and it usually starts to be produced during pregnancy and continues during the early days of breastfeeding.
Choice C rationale
An immediate let-down response is not typically observed on the first postpartum day. The letdown reflex, which releases milk from the breast, usually becomes more pronounced after the first few days of breastfeeding.
Choice D rationale
While the breasts may become larger due to milk production, they are not typically very tender to touch on the first postpartum day. Tenderness may occur later, especially if complications like engorgement or mastitis develop.
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