A nurse is reinforcing teaching with a 36-year-old client who is at 16 weeks of gestation and is scheduled for an amniocentesis. The nurse should include in the teaching that an amniocentesis is performed to identify which of the following findings?
Chromosomal abnormalities
Placental circulation
Rh incompatibility
Fetal breathing movements
The Correct Answer is A
Rationale:
A. Chromosomal abnormalities: Amniocentesis involves analyzing amniotic fluid to detect genetic and chromosomal disorders such as Down syndrome, trisomy 18, and neural tube defects. It is typically performed between 15 and 20 weeks gestation for diagnostic accuracy during this stage of fetal development.
B. Placental circulation: Assessment of placental blood flow and circulation is usually done via Doppler ultrasound, not amniocentesis. Amniocentesis does not evaluate the vascular function or perfusion status of the placenta.
C. Rh incompatibility: While amniocentesis may reveal fetal anemia due to Rh sensitization in rare cases, it is not the primary test used for diagnosing Rh incompatibility. Blood antibody screening and Doppler assessment of the middle cerebral artery are preferred for Rh-related concerns.
D. Fetal breathing movements: Fetal breathing is assessed through a biophysical profile or real-time ultrasound, not via amniotic fluid sampling. Amniocentesis does not provide information about the fetus’s respiratory activity or movement patterns.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"A":{"answers":"A"},"B":{"answers":"A"},"C":{"answers":"A"},"D":{"answers":"A"},"E":{"answers":"B"}}
Explanation
Rationale:
• Monitor fetal heart rate: Continuous monitoring is essential after epidural placement to detect changes in fetal status. Minimal variability and early decelerations could indicate emerging fetal distress. Early detection guides timely intervention.
• Assist with administration of ampicillin IV: The client is GBS positive and in active labor with ruptured membranes. IV antibiotics reduce the risk of neonatal infection. Prompt administration is key for prophylaxis.
• Request a prescription for ephedrine: Epidural anesthesia may cause maternal hypotension, which decreases placental perfusion. Ephedrine helps maintain blood pressure. This supports uteroplacental circulation and fetal oxygenation.
• Place the client in left lateral position: This improves uterine perfusion and helps relieve vena cava compression. It is especially important after epidural anesthesia. It also supports better fetal oxygenation during decelerations.
• Decrease the IV flow rate: IV fluids help counteract hypotension that may result from epidural use. Reducing the rate would worsen perfusion and blood pressure. This could compromise fetal oxygen delivery.
Correct Answer is B
Explanation
Rationale:
A. "Colostrum provides vitamin K which is an essential nutrient for newborns." While vitamin K is essential for clotting, it is not found in sufficient amounts in colostrum. This is why newborns routinely receive a vitamin K injection shortly after birth, rather than relying on breast milk as a source.
B. "Colostrum provides many important antibodies that the newborn lacks." Colostrum is rich in immunoglobulins, especially IgA, which help protect the newborn from pathogens by providing passive immunity. These antibodies line the infant's gastrointestinal tract and offer critical defense during early life.
C. "Colostrum contains iron, which is important for a newborn's brain development." Although breast milk contains iron, colostrum is not a major source of it. Newborns are typically born with adequate iron stores to last several months, and the primary role of colostrum is immune protection, not iron supplementation.
D. "Colostrum contains a natural diuretic that stimulates the newborn to void." While colostrum has a laxative effect that helps the newborn pass meconium, there is no known diuretic component. Its primary importance lies in delivering antibodies and coating the GI tract to reduce infection risk.
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