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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. 1 cm below the umbilicus: This is too low for a client at 22 weeks of gestation.
B. 3 cm below the umbilicus: This is also too low for a client at 22 weeks of gestation.
C. 2 cm above the umbilicus: At 22 weeks of gestation, the fundus should be palpated about 2 cm above the umbilicus, which is at approximately the level of the maternal belly button.
D. 3 cm above the umbilicus: This is too high for a client at 22 weeks of gestation.
Correct Answer is C
Explanation
The correct answer is: c. The cervix is 1 cm dilated.
Choice A reason:
The presenting part is 1 cm above the ischial spines. This statement would be documented as -1 station. Fetal station is measured in centimeters relative to the ischial spines, with negative numbers indicating the presenting part is above the spines.
Choice B reason:
The cervix is effaced 1 cm. Effacement is measured in percentages, not centimeters. It refers to the thinning of the cervix, which progresses from 0% (not effaced) to 100% (fully effaced).
Choice C reason:
The cervix is 1 cm dilated. This means the cervix has opened 1 cm, which is a common measurement during early labor. Cervical dilation ranges from 0 cm (closed) to 10 cm (fully dilated).
Choice D reason:
The presenting part is 1 cm below the ischial spines. This would be documented as +1 station. Positive numbers indicate the presenting part is below the ischial spines, moving towards delivery.
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