A nurse is teaching a client who is at 18 weeks of gestation and is to undergo an amniocentesis. The nurse should explain that the purpose of this test is to identify which of the following? (Select all that apply.)
"Gender of the fetus"
"Anomalies in fetal chromosomes"
"Rh incompatibility"
"Cephalopelvic disproportion"
"Neural tube defects"
Correct Answer : B,E
Choice A: Amniocentesis is not primarily performed to determine the gender of the fetus. The main indication for this procedure is to detect genetic abnormalities or chromosomal disorders.
Choice B: The primary purpose of an amniocentesis is to detect chromosomal abnormalities such as Down syndrome (trisomy 21), trisomy 18, and trisomy 13, among others.
Choice C: Rh incompatibility is assessed through blood tests, not amniocentesis. It involves determining the Rh factor of the mother's blood and monitoring for potential Rh sensitization.
Choice D: Cephalopelvic disproportion refers to a situation where the baby's head is too large or the mother's pelvis is too small to allow for a vaginal delivery. It is not related to amniocentesis.
Choice E: While detecting neural tube defects can be done through amniocentesis, it is not the primary indication for the procedure. Neural tube defects can also be screened for through blood tests and ultrasound examinations. Amniocentesis is more commonly used for chromosomal analysis.
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Related Questions
Correct Answer is B
Explanation
Choice A: An ultrasound can indeed determine the number of fetuses if a client is carrying multiples, but this is not the primary reason for performing an ultrasound before amniocentesis.
Choice B: An ultrasound is typically done before an amniocentesis to visualize the location of the placenta and fetus. This information is important to ensure that the amniocentesis needle is safely inserted away from the placenta and the fetus.
Choice C: The primary purpose of an amniocentesis is to obtain a sample of amniotic fluid to screen for genetic conditions, not specifically for spina bifida.
Choice D: Fetal age can be estimated through an ultrasound, but this is not the primary reason for performing an ultrasound before an amniocentesis. The main goal of the procedure is to obtain a sample of amniotic fluid for genetic testing.
Correct Answer is D
Explanation
Choice A: It is not accurate to say that a repeat cesarean birth will always be safer. The decision for a repeat cesarean or a trial of labor after cesarean (TOLAC) depends on various factors, including the client's medical history and the type of incision used in the previous cesarean.
Choice B: While there are multiple factors to consider, the nurse can still provide general information about the possibility of attempting a vaginal birth after cesarean (VBAC).
Choice C: While focusing on the health of the newborn is important, the client's question about the possibility of a future VBAC can be addressed without dismissing her concerns.
Choice D: The type of incision used in the previous cesarean birth (such as low transverse incision) is a significant factor in determining the eligibility for a VBAC in subsequent pregnancies. Clients with certain types of incisions may have a higher likelihood of success with a VBAC.
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