A nurse is reinforcing teaching with a client who is at 38 weeks of gestation and has a positive group B streptococcus B-hemolytic screening.
Which of the following medications should the nurse discuss as the prophylaxis treatment during labor for this client?
Penicillin.
Cefazolin.
Erythromycin.
Vancomycin.
The Correct Answer is A
Choice A rationale
Penicillin is the recommended prophylactic treatment for a client at 38 weeks of gestation with a positive group B streptococcus B-hemolytic screening. It is highly effective in preventing the transmission of group B strep from mother to baby during labor and delivery. Administering Penicillin reduces the risk of neonatal sepsis, pneumonia, and meningitis caused by group B strep.
Choice B rationale
Cefazolin is an alternative antibiotic for clients allergic to penicillin. It is less preferred compared to penicillin due to its broader spectrum of activity and potential for resistance. Cefazolin can be used if the client has a non-severe penicillin allergy.
Choice C rationale
Erythromycin is not recommended for group B strep prophylaxis during labor due to its lower efficacy compared to penicillin and cefazolin. It is less effective in preventing neonatal group B strep infections and is used less frequently.
Choice D rationale
Vancomycin is used for clients with a severe penicillin allergy or for those with resistant strains of group B strep. It is a last-resort antibiotic due to its potent effect and potential side effects. It is only used when absolutely necessary.
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Correct Answer is A
Explanation
Choice A rationale
Amniocentesis is used to detect fetal genetic abnormalities, such as Down syndrome, by analyzing the amniotic fluid for genetic markers.
Choice B rationale
An empty bladder is required for the test only in late pregnancy to prevent bladder injury; however, in early pregnancy, a full bladder may be required to better visualize the uterus and amniotic fluid.
Choice C rationale
An x-ray is not typically used during the needle placement for amniocentesis. Ultrasound is the preferred method to guide the needle to avoid harm to the fetus and mother.
Choice D rationale
The test does not determine the volume of amniotic fluid; it is used primarily for genetic analysis, assessing fetal lung maturity, and diagnosing certain fetal infections.
Correct Answer is A
Explanation
Choice A rationale
"You will be tested again for GBS at about 36 weeks of gestation.”. This is correct because retesting for GBS at 35-37 weeks of gestation is standard practice to identify colonization status before delivery, which helps in planning intrapartum antibiotic prophylaxis.
Choice B rationale
"If you test positive for GBS, the provider will need to perform a cesarean birth.”. This is incorrect because GBS colonization is not an indication for cesarean delivery. The primary intervention is antibiotic administration during labor to prevent neonatal infection.
Choice C rationale
"You will take an antibiotic during the last 2 weeks of pregnancy to avoid transferring GBS to your baby.”. This is incorrect because antibiotics are given intrapartum (during labor) to prevent GBS transmission, not during the last weeks of pregnancy.
Choice D rationale
"This infection can cause your baby to experience hearing loss at birth.”. This is incorrect because GBS infection primarily causes sepsis, pneumonia, and meningitis in neonates, not hearing loss.