A nurse is reviewing the laboratory report for a client who is in active labor. The client tested positive for group B streptococcus B-hemolytic. Which of the following medications should the nurse plan to administer to the client?
Doxycycline.
Cefotetan.
Ampicillin.
Fluconazole.
The Correct Answer is C
The correct answer is c. Ampicillin.
Rationale:
- Group B Streptococcus (GBS) B-hemolytic is a bacterium that can colonize the vagina and rectum of pregnant women. While usually harmless to the mother, it can be passed to the newborn during birth and cause serious infections, including pneumonia, meningitis, and sepsis.
- Ampicillin is the first-line antibiotic recommended by the Centers for Disease Control and Prevention (CDC) for the prevention of GBS disease in newborns. It belongs to the penicillin class of antibiotics, which are highly effective against GBS and generally well-tolerated by pregnant women and newborns.
- Doxycycline is not recommended for GBS prophylaxis due to its poor penetration into amniotic fluid and potential for causing tooth discoloration and bone development problems in newborns.
- Cefotetan is an alternative option for women with penicillin allergy, but ampicillin is still preferred due to its lower cost and broader spectrum of activity against GBS strains.
- Fluconazole is an antifungal medication and has no activity against GBS bacteria.
Detailed Rationale for Each Choice:
a. Doxycycline:
- Rationale against:
- Poor penetration into amniotic fluid: Doxycycline does not effectively reach the amniotic sac, where the baby is surrounded, and therefore may not adequately protect the newborn from GBS infection.
- Adverse effects in newborns: Doxycycline can cause tooth discoloration and bone development problems in infants exposed in utero.
b. Cefotetan:
- Rationale for:
- Alternative for penicillin allergy: Cefotetan is a cephalosporin antibiotic effective against GBS and can be used in women with penicillin allergy.
- Rationale against:
- Second-line option: Ampicillin is the preferred choice due to its lower cost and broader spectrum of activity against GBS strains.
c. Ampicillin:
- Rationale for:
- First-line antibiotic: Ampicillin is the CDC-recommended first-line antibiotic for GBS prophylaxis due to its:
- High effectiveness against GBS: Ampicillin has a broad spectrum of activity against GBS strains.
- Good safety profile: Ampicillin is generally well-tolerated by pregnant women and newborns.
- Cost-effectiveness: Ampicillin is a relatively inexpensive antibiotic compared to other options.
- First-line antibiotic: Ampicillin is the CDC-recommended first-line antibiotic for GBS prophylaxis due to its:
d. Fluconazole:
- Rationale against:
- Antifungal medication: Fluconazole is an antifungal medication and has no activity against GBS, which is a bacterium.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
Fresh citrus fruits are not a good source of vitamin B12. They are rich in vitamin C but do not contain vitamin B12.
Choice B rationale:
Brown rice is not a good source of vitamin B12. While it is a nutritious grain, it does not contain vitamin B12.
Choice C rationale:
Raw carrots are not a good source of vitamin B12. Carrots provide essential nutrients but do not contain vitamin B12.
Choice D rationale:
Fortified soy milk is the correct choice as it is a suitable option for someone on a vegan diet looking to increase their vitamin B12 intake. Many brands of soy milk are fortified with vitamin B12, making it a reliable source for vegans. Vitamin B12 is essential for nerve function and red blood cell production, making it especially important during pregnancy.
Correct Answer is C
Explanation
Choice A rationale:
Preterm gestational age is not indicated by the presence of breast tissue with a flat areola and no bud. Preterm newborns may have immature breast tissue, but it does not manifest as a flat areola with no bud.
Choice B rationale:
Decreased maternal hormones during pregnancy would result in less developed breast tissue in the newborn, but it wouldn't present as a flat areola with no bud. Instead, the breast tissue may be small and less pronounced.
Choice C rationale:
Congenital anomaly refers to a birth defect or malformation that occurs during fetal development. In this case, the flat areola with no bud suggests an abnormality in the development of the breast tissue. Further assessment and evaluation may be required to determine the exact nature of the anomaly.
Choice D rationale:
Ambiguous secondary sex characteristics would involve the presence of characteristics that are not clearly male or female. The described breast tissue does not fit this category, as it is specifically described as having a flat areola with no bud, which is more indicative of a congenital anomaly.
Question 65.
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