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A nurse is caring for a client in the obstetric clinic who is 22 weeks of gestation, calculated by her last menstrual period.The fundal height measurement is 19 centimeters.This measurement could indicate which of the following? (Select all that apply).

A.

Intrauterine growth restriction.

B.

Consistent for estimated gestational age by LMP.

C.

Fetal anomaly.

D.

Polyhydramnios.

E.

Miscalculation of due date.

Question Solution

Correct Answer : A,C,E

Choice A rationale

 

Intrauterine growth restriction (IUGR) can result in a smaller fundal height measurement than expected for gestational age. This condition indicates that the fetus is not growing at the normal rate inside the womb.

 

Choice B rationale

 

A fundal height measurement of 19 centimeters at 22 weeks of gestation is not consistent with the estimated gestational age by LMP. Typically, the fundal height in centimeters should be approximately equal to the number of weeks of gestation.

 

Choice C rationale

 

Fetal anomalies can affect the size and growth of the fetus, leading to discrepancies in fundal height measurements. This could result in a smaller or larger than expected measurement.

 

Choice D rationale

 

Polyhydramnios, or excessive amniotic fluid, would typically result in a larger fundal height measurement than expected for gestational age. Therefore, this choice is incorrect.

 

Choice E rationale

 

Miscalculation of the due date can lead to discrepancies in fundal height measurements. If the gestational age is miscalculated, the fundal height may not match the expected measurement for the given weeks of gestation.


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Correct Answer is A

Explanation

Choice A rationale

The ductus venosus, foramen ovale, and ductus arteriosus are shunts in fetal circulation that bypass the lungs and liver, directing oxygenated blood to the brain and body. The foramen ovale allows blood to flow from the right atrium to the left atrium, bypassing the lungs. The ductus arteriosus connects the pulmonary artery to the aorta, allowing blood to bypass the lungs. The ductus venosus shunts blood from the umbilical vein to the inferior vena cava, bypassing the liver.

Choice B rationale

This choice is incorrect because the primary purpose of these shunts is not to ensure proper development of the fetal heart. While they do play a role in directing blood flow, their main function is to bypass the non-functional fetal lungs and liver.

Choice C rationale

This choice is incorrect because the shunts are not primarily involved in regulating blood pressure in the fetus. Their main function is to direct oxygenated blood to vital organs like the brain and heart.

Choice D rationale

This choice is incorrect because the shunts bypass the lungs, which are not yet functional in the fetus. Gas exchange occurs in the placenta, not the fetal lungs.

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.

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