A patient is in preterm labor at 30 weeks gestation.
Her OB orders antenatal steroids.
The order is for the nurse to administer betamethasone IM and to repeat the dose after 2 hours.
Betamethasone is available as 4mg/mL in 10 mL vials.
How many mL will the nurse draw up in the syringe for each dose?
0.5 mL
1 mL
1.5 mL
3 mL
The Correct Answer is D
Step 1 is to calculate the volume of betamethasone to be drawn up for each dose. The order is to administer betamethasone IM and to repeat the dose after 2 hours. Betamethasone is available as 4mg/mL. Therefore, to administer a dose of 12mg, the nurse would need to draw up 12mg ÷ 4mg/mL = 3mL for each dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
If a patient in labor who has received an epidural anesthesia block has a blood pressure reading of 80/40 mm Hg, the nurse’s immediate course of action should be to position the patient laterally. This helps to maximize venous return and cardiac output, thereby improving maternal blood pressure and fetal perfusion.
Correct Answer is A
Explanation
Choice A rationale
The maternal serum alpha-fetoprotein (MSAFP) test is a screening test that measures the level of alpha-fetoprotein in the mother’s blood during pregnancy. It is used to assess the likelihood of certain birth defects, including neural tube defects such as spina bifida.
Choice B rationale
The MSAFP test does not assess fetal lung maturity. Other tests, such as amniocentesis, can be used to assess this.
Choice C rationale
The MSAFP test does not identify Rh incompatibility between the mother and fetus. Rh incompatibility is typically determined through blood typing and antibody screening.
Choice D rationale
While the MSAFP test can provide valuable information about the health of the fetus, it does not assess various markers of fetal well-being. It is specifically used to screen for certain birth defects.
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