How it Works
Try Naxlex NCLEX-RN (Free-Trial)

A nurse is preparing to administer phytonadione 0.5 mg IM to a newborn.Available in phytonadione injection 1 mg/0.5 mL. How many mL should the nurse plan to administer?
(Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Explanation

The Correct Answer is ["0.25"]

Amount of injection in mls = Dose ordered (mg) / Dose available Therefore:

Amount of injection in mls = 0.5 mg Therefore;

Amount of injection in mls = 0.5 mg x 0.5 mL / 1 mg Amount of injection in mls = 0.25 mL


Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Free Nursing Study Resources

Related Questions

Correct Answer is D

Explanation

Choice A reason: Ensuring that the rate of the client's terbutaline infusion does not exceed 18 mg/hr is incorrect. The prescription specifies the maximum rate as 30 mcg/min, not 18 mg/hr. The units are different, and the prescribed rate is much lower than 18 mg/hr. Terbutaline is typically administered in micrograms per minute, and the nurse should follow the specific rate and titration instructions provided in the prescription.

Choice B reason: Weighing the client to determine the rate of the terbutaline infusion is not necessary according to the prescription. The dosage and titration instructions are based on the number of uterine contractions and not on the client's weight. While weight-based dosing is common for some medications, this prescription provides clear guidelines for adjusting the infusion rate based on the client's contraction pattern.

Choice C reason: Increasing the drip rate of the infusion by 5 mL/hr when titrating the dosage is incorrect. The prescription specifies increasing the infusion rate by 5 mcg/min every 10 minutes until contractions stop, not by 5 mL/hr. The nurse should follow the prescribed titration instructions, which are based on micrograms per minute, to ensure the correct dosage and avoid potential complications.

Choice D reason: This is the correct interpretation of the prescription. The nurse should initiate the infusion of terbutaline if the client has five or more contractions in 1 hour. The prescription indicates that the infusion should start at 2.5 mcg/min and be increased by 5 mcg/min every 10 minutes until the contractions stop, with a maximum rate of 30 mcg/min. This approach helps manage uterine contractions effectively and ensures the client receives the appropriate dosage based on their contraction pattern.

Correct Answer is ["2.9"]

Explanation

Let’s calculate the IV pump rate for administering dobutamine to a preterm newborn.

Step 1 is to convert the dose from mcg/kg/min to mg/kg/min. We know that 1 mg = 1000 mcg, so we have:

12 mcg/kg/min ÷ 1000 = 0.012 mg/kg/min

Step 2 is to calculate the total amount of dobutamine the newborn needs per minute:

0.012 mg/kg/min × 2 kg = 0.024 mg/min

Step 3 is to convert this to an hourly rate:

0.024 mg/min × 60 min/hr = 1.44 mg/hr

Step 4 is to calculate the volume of the solution that contains this amount of dobutamine. We know that 250 mg of dobutamine is dissolved in 500 mL of solution, so:

(1.44 mg/hr ÷ 250 mg) × 500 mL = 2.88 mL/hr

So, the nurse should set the IV pump to deliver approximately 2.9 mL/hr (rounded to the nearest tenth).

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Register