A nurse is caring for a client who is at 37 weeks of gestation and received a provider order for group B streptococcus beta-hemolytic culture.
Which of the following statements should the nurse include in the teaching?
Acyclovir will be prescribed if this test result is positive.
This test will be repeated 24 hours after the initial test is done.
Antibiotics will be administered before labor if this test result is positive.
This test will require a blood specimen to be collected from a vein.
The Correct Answer is C
Choice A rationale
Acyclovir is an antiviral medication used primarily to treat herpes simplex virus (HSV) infections to prevent vertical transmission to the neonate. Group B Streptococcus (GBS) is a bacterium and is treated with antibiotics, specifically penicillin or ampicillin, administered intravenously during labor and delivery to prevent neonatal sepsis.
Choice B rationale
The Group B Streptococcus (GBS) culture is typically collected as a single screen between 36 weeks 0 days and 37 weeks 6 days of gestation from the lower vagina and perirectal area. This one-time positive result is sufficient to indicate the need for intrapartum antibiotic prophylaxis (IAP); repeat testing 24 hours later is not standard practice.
Choice C rationale
If the Group B Streptococcus (GBS) culture is positive, the client is considered colonized and requires intrapartum antibiotic prophylaxis (IAP), usually penicillin G, administered intravenously at the onset of labor or rupture of membranes. This reduces the risk of GBS transmission to the newborn, which can cause severe neonatal morbidity like sepsis or pneumonia.
Choice D rationale
The Group B Streptococcus (GBS) culture is a screening test obtained via a swab of the client's lower vagina and perirectal area, not a blood test. The GBS bacteria colonize these areas, and the swab is sent for culture and sensitivity to determine the need for prophylactic antibiotics during labor.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Bilirubin monitoring is critical for jaundice due to hemolysis, often seen in ABO incompatibility or cephalohematoma. While Large for Gestational Age (LGA) infants can have polycythemia, hypoglycemia is a more immediate and life-threatening risk that requires priority monitoring in the first hours of life. The normal total bilirubin range is typically less than 5 mg/dL in the first 24 hours.
Choice B rationale
LGA infants are often born to mothers with uncontrolled or gestational diabetes, leading to fetal hyperinsulinism. After birth, the maternal glucose supply is cut off, and the high insulin levels persist, causing a rapid and profound drop in the newborn's blood glucose, hence hypoglycemia is a major concern. The normal newborn glucose range is 40 to 60 mg/dL and should be monitored.
Choice C rationale
White blood cell (WBC) count is primarily monitored to detect neonatal sepsis or infection. While all newborns are at risk, the LGA classification does not inherently place them at a higher, unique risk for infection compared to the immediate metabolic derangement risks like hypoglycemia. The normal WBC count range is 9,000 to 30,000 cells/mm.
Choice D rationale
Arterial Blood Gases (ABGs) are used to assess the newborn's respiratory status and acid-base balance, particularly in respiratory distress syndrome or persistent pulmonary hypertension. While LGA infants can experience birth trauma or meconium aspiration, ABG monitoring is not routine unless significant respiratory symptoms are present.
Correct Answer is C
Explanation
Step 1 is: Start with the first day of the last menstrual period (LMP): July 21st.
Step 2 is: Subtract 3 months: July minus 3 months is April.
Step 3 is: Add 7 days to the LMP day: 21 plus 7 days is the 28th.
Step 4 is: Add 1 year: April 28th of the following year. Final calculated answer: April 28th.
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