Dosage Calculation RN Maternal Newborn Proctored Assessment 3.2 Retake 1

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Sample questions from Dosage Calculation RN Maternal Newborn Proctored Assessment 3.2 Retake 1

This material has 90 questions with answers and rationales. Here are the first 5.

1. 1.The provider prescribes folic acid 800 mcg by mouth daily for a client planning pregnancy. The tablets contain 0.4 mg each. How many tablets should the client take per dose?

   • A.2 tablets
   • B.4 tablets
   • C.1 tablet
   • D.8 tablets

   Rationale: Convert 800 mcg to 0.8 mg, then divide by 0.4 mg per tablet to obtain 2 tablets. One tablet provides only 0.4 mg, while 4 and 8 tablets provide excessive doses. Convert units before dividing when the prescribed dose and available strength use different units.

2. 2.The provider prescribes a magnesium sulfate loading dose of 4 g in 100 mL of solution to infuse over 20 minutes for a client with severe preeclampsia. At what rate should the nurse set the infusion pump in mL/hr?

   • A.200 mL/hr
   • B.100 mL/hr
   • C.400 mL/hr
   • D.300 mL/hr

   Rationale: Twenty minutes is one-third of an hour, so 100 mL divided by one-third hour equals 300 mL/hr. A rate of 100 mL/hr would deliver the solution over an hour, and 200 mL/hr would take 30 minutes. A rate of 400 mL/hr would infuse the dose in 15 minutes, faster than prescribed.

3. 3.A client with gestational diabetes is prescribed 18 units of NPH insulin and 6 units of regular insulin before breakfast. Which actions are appropriate when preparing and administering these doses? Select all that apply.

   • A.Withdraw 6 units of regular insulin before withdrawing 18 units of NPH insulin from the vials.
   • B.Shake the NPH vial vigorously until a uniform foam forms before drawing up the dose.
   • C.Administer the combined 24-unit dose subcutaneously as prescribed.
   • D.Withdraw 18 units of NPH insulin before withdrawing 6 units of regular insulin from the vials.
   • E.Verify the prescribed doses and the client's current blood glucose before administration.

   Rationale: Verifying the doses and current glucose supports safe insulin administration, and when mixing regular and NPH insulin, draw up the clear regular insulin before the cloudy NPH insulin. The combined prescribed dose is 24 units and is administered subcutaneously when mixing is appropriate. Drawing up NPH first can contaminate the regular insulin vial, and vigorously shaking NPH can damage the suspension; gently roll it to resuspend.

4. 4.In the prenatal clinic, a client who is Rh-negative and unsensitized is prescribed 300 mcg of Rh immune globulin. The available product contains 300 mcg/mL. How many milliliters should the nurse administer?

   • A.1.5 mL
   • B.3 mL
   • C.1 mL
   • D.0.5 mL

   Answer and rationale are in the full material.

5. 5.A client at 29 weeks of gestation is prescribed betamethasone 12 mg IM. The vial concentration is 6 mg/mL. How many milliliters should the nurse prepare for one dose?

   • A.1 mL
   • B.2 mL
   • C.6 mL
   • D.3 mL

   Answer and rationale are in the full material.