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 C
Explanation
Choice A rationale:
Blood pressure of 136/88 mm Hg should be monitored, but it is not a finding that the nurse needs to urgently report to the provider following the administration of butorphanol. The blood pressure reading is slightly elevated but might be attributed to pain or anxiety during labor.
Choice B rationale:
Moderate fetal heart rate variability is a reassuring sign of fetal well-being and is an expected finding during labor. It does not require immediate reporting to the provider.
Choice C rationale:
Respiratory rate of 100/min is significantly increased and should be reported to the provider following the administration of butorphanol. Respiratory depression is a potential side effect of opioids like butorphanol, and a respiratory rate of 100/min raises concern for potential respiratory compromise.
Choice D rationale:
Urinary output of 120 mL in 2 hours is an acceptable finding during labor and does not require immediate reporting to the provider. Adequate urinary output varies, but generally, 30 mL/hour is considered acceptable during labor.
Correct Answer is C
Explanation
Choice A rationale:
The nurse should not apply lotion to the newborn's skin during phototherapy. Phototherapy involves exposing the newborn's skin to light to treat jaundice by breaking down bilirubin. Applying lotion may interfere with the effectiveness of the therapy and may not be recommended as it can make it difficult for the skin to release heat generated during the process.
Choice B rationale:
Giving the newborn glucose water every 4 hours is not a necessary action during phototherapy. The primary concern during phototherapy is to treat jaundice, and giving glucose water may not have a direct impact on the effectiveness of the treatment. Additionally, it is important to focus on monitoring the newborn's bilirubin levels and hydration status.
Choice D rationale:
Dressing the newborn in a thin layer of clothing during phototherapy is not recommended. Phototherapy works best when the newborn's skin is exposed to a light source, and covering the skin with clothing may decrease the effectiveness of the treatment.
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