A client at 34 weeks gestation is undergoing an ultrasound.The report shows the amniotic fluid volume is estimated at 1900 mL. Which deduction does the nurse make from this finding?
Oligohydramnios is present.
Polyhydramnios is present.
Follow-up glucose test is warranted.
Fluid is normal for gestational age.
The Correct Answer is B
Choice A rationale
Oligohydramnios refers to a condition where there is too little amniotic fluid. An amniotic fluid volume of 1900 mL is above the normal range, indicating that oligohydramnios is not present.
Choice B rationale
Polyhydramnios is the condition of having too much amniotic fluid. The normal range for amniotic fluid volume at 34 weeks gestation is between 800 and 1000 mL. An estimated volume of 1900 mL indicates polyhydramnios, which can be associated with various maternal and fetal conditions.
Choice C rationale
A follow-up glucose test is not directly indicated by the finding of polyhydramnios. While polyhydramnios can be associated with gestational diabetes, the decision to perform a glucose test would depend on other clinical factors and the patient’s history.
Choice D rationale
An amniotic fluid volume of 1900 mL is above the normal range for 34 weeks gestation, so it is not considered normal for gestational age. This finding indicates polyhydramnios rather than a normal fluid level.
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Correct Answer is A
Explanation
Choice A rationale
The uterus can indeed increase in size by 20 times its non-pregnant size. This significant expansion is necessary to accommodate the growing fetus and the increased blood supply required during pregnancy.
Choice B rationale
While the weight of the uterus does increase significantly during pregnancy, from about 100 grams to approximately 1,000 grams, this statement does not directly address the client’s concern about the uterus’s ability to stretch.
Choice C rationale
About 25% of the increased capacity of the uterus is related to uteroplacental content, but this does not fully explain the uterus’s ability to stretch to accommodate a full-term baby.
Choice D rationale
The increase in uterus size during pregnancy is not solely related to amniotic fluid volume. The uterus itself grows and stretches significantly to accommodate the developing fetus.
Correct Answer is C
Explanation
Choice A rationale
The umbilical cord does not typically contain one artery and one vein. This configuration would not provide the necessary blood flow to support fetal development. The umbilical cord must have two arteries to carry deoxygenated blood and waste products from the fetus to the placenta, and one vein to carry oxygenated blood and nutrients from the placenta to the fetus.
Choice B rationale
Two veins and one artery is also incorrect. The umbilical cord must have two arteries to ensure that deoxygenated blood and waste products are efficiently transported from the fetus to the placenta. Having only one artery would not suffice for the required blood flow.
Choice C rationale
Two arteries and one vein is the correct configuration of the umbilical cord. The two arteries carry deoxygenated blood and waste products from the fetus to the placenta, while the single vein carries oxygenated blood and nutrients from the placenta to the fetus. This arrangement is essential for maintaining proper fetal circulation during pregnancy.
Choice D rationale
Two arteries and two veins is incorrect. The umbilical cord only needs one vein to carry oxygenated blood and nutrients from the placenta to the fetus. Having two veins would be redundant and unnecessary for fetal development.