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 ["A","B","E"]
Explanation
Choice A rationale
Body tremors are a key indicator of central nervous system (CNS) hyperirritability, which is a major component of neonatal abstinence syndrome (NAS) following in utero exposure to opioids like heroin. The newborn's immature CNS struggles to adapt after the abrupt cessation of the drug, leading to uncoordinated, jerky movements, exaggerated reflexes, and generalized irritability.
Choice B rationale
Tachypneic respirations (respiratory rate greater than 60 breaths/min) are a common sign of NAS. This occurs due to the dysregulation of the autonomic nervous system and increased metabolic rate associated with the hyperirritable state. Other respiratory signs include flaring, retractions, and frequent yawning or sneezing, reflecting CNS overstimulation.
Choice C rationale
The hyperirritability of the CNS in NAS typically leads to increased and exaggerated reflexes (hyperreflexia), such as a hyperactive Moro reflex, not decreased reflexes. Decreased reflexes would suggest CNS depression, which is characteristic of acute opioid intoxication, not the withdrawal state of NAS.
Choice D rationale
Newborns experiencing NAS are characterized by CNS hyperstimulation, leading to excessive wakefulness, irritability, and an inability to be consoled, often referred to as hyperactivity or agitation. Extreme lethargy and hypoactivity are signs of CNS depression or severe illness, which is contrary to the expected presentation of NAS.
Choice E rationale
The hyper-responsiveness of the newborn's CNS in NAS causes a characteristic high-pitched, non-stop, inconsolable crying. This shrill, distressed cry is due to the sustained state of irritability and neurological overstimulation, representing a significant manifestation of withdrawal symptoms that is distressing to both the newborn and the caregivers.
Correct Answer is C
Explanation
Choice A rationale
The car seat harness straps should be positioned at or slightly below the baby's shoulders when the car seat is installed rear-facing. Positioning the straps above the shoulders could allow the baby to slide up and out of the harness in a crash due to the forces involved, compromising the restraint system's effectiveness and increasing injury risk.
Choice B rationale
The retainer clip, also called the chest clip, must be positioned at the level of the armpits across the center of the chest or sternum, not the abdomen. This critical placement ensures that the harness straps are kept correctly positioned over the baby's shoulders, preventing the straps from slipping off during a collision and maintaining optimal force distribution across the torso.
Choice C rationale
A 45-degree recline angle for a rear-facing car seat is generally recommended to prevent the infant's head from falling forward, which can compromise the airway, particularly in newborns or infants with poor head control. This specific angle is crucial for maintaining a safe and open airway and is often achieved using built-in level indicators on the car seat base.
Choice D rationale
Current safety recommendations advise keeping a child in a rear-facing car seat as long as possible, typically until they reach the maximum weight or height limit allowed by the car seat manufacturer, which often extends well beyond 12 months of age, frequently up to 2 to 4 years of age, for maximum spinal protection.
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