A nurse is caring for a newborn whose mother is positive for the hepatitis B surface antigen.Which of the following should the infant receive?
Hepatitis B immune globulin at 1 week followed by hepatitis B vaccine monthly for 6 months.
Hepatitis B immune globulin and hepatitis B vaccine within 12 hr of birth.
Hepatitis B vaccine monthly until the newborn tests negative for the hepatitis B surface antigen.
Hepatitis B vaccine at 24 hr followed by hepatitis B immune globulin every 12 hr for 3 days.
The Correct Answer is B
Choice A rationale
Hepatitis B immune globulin at 1 week followed by hepatitis B vaccine monthly for 6 months is incorrect. This schedule delays the immune response and leaves the infant unprotected during the critical early period when the risk of transmission is highest.
Choice B rationale
Hepatitis B immune globulin and hepatitis B vaccine within 12 hr of birth is the correct approach. This combination provides immediate passive immunity through the immune globulin and active immunity through the vaccine, significantly reducing the risk of hepatitis B transmission from mother to child.
Choice C rationale
Hepatitis B vaccine monthly until the newborn tests negative for the hepatitis B surface antigen is incorrect. Monthly administration alone is insufficient without the initial dose of immune globulin, especially since the infant may remain at risk until the negative test result.
Choice D rationale
Hepatitis B vaccine at 24 hr followed by hepatitis B immune globulin every 12 hr for 3 days is incorrect. The delay in the first vaccine dose reduces its efficacy, and the immune globulin schedule does not align with established guidelines for preventing hepatitis B transmission.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
At 9 weeks gestation, the primary purpose of an ultrasound is to confirm the presence of a fetal heartbeat, which indicates a viable pregnancy.
Choice B rationale
Chromosomal defects are typically assessed using different tests, such as chorionic villus sampling or amniocentesis, rather than an ultrasound at this early stage.
Choice C rationale
Fetal lung maturity cannot be assessed at 9 weeks gestation because the lungs are not yet developed. This assessment is usually done later in pregnancy if preterm delivery is anticipated.
Choice D rationale
The position of the fetus in utero is not a concern at this early stage of pregnancy. Fetal positioning becomes relevant later in pregnancy, closer to delivery.
Correct Answer is B
Explanation
Choice A rationale
Zidovudine (ZVD) is given intravenously during labor to reduce the risk of mother-to-child transmission of HIV.
Choice B rationale
HIV-positive mothers are advised not to breastfeed as HIV can be transmitted through breast milk. This statement indicates the need for further teaching.
Choice C rationale
Administering Zidovudine (ZVD) orally to the baby immediately after birth for 6 weeks is standard practice to prevent HIV transmission.
Choice D rationale
Adherence to taking Zidovudine (ZVD) at the same time every day during pregnancy is crucial for maintaining effective drug levels and reducing the risk of mother-to-child transmission.
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