A nurse is answering Questions about labor and delivery to a client.The client is concerned that she will need a blood transfusion due to all the blood loss during the delivery.The nurse explains that blood volume increases during pregnancy that will offset the loss.Which of the following is the correct percentage of increased blood volume during pregnancy that the nurse should explain to the client?
25%-35%.
10%-20%.
60%-70%.
40%-50%.
The Correct Answer is D
Choice A rationale
A 25%-35% increase in blood volume is lower than the actual increase observed during pregnancy. This choice is incorrect.
Choice B rationale
A 10%-20% increase in blood volume is significantly lower than the actual increase observed during pregnancy. This choice is incorrect.
Choice C rationale
A 60%-70% increase in blood volume is higher than the actual increase observed during pregnancy. This choice is incorrect.
Choice D rationale
The correct percentage of increased blood volume during pregnancy is 40%-50%. This increase helps accommodate the growing fetus and placenta, and prepares the body for the blood loss that occurs during delivery.
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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 B
Explanation
Choice A rationale
This response is dismissive and does not address the client’s feelings. It may make the client feel invalidated and unsupported.
Choice B rationale
This response acknowledges that ambivalent feelings are common in early pregnancy. It normalizes the client’s feelings and provides reassurance, which is appropriate and supportive.
Choice C rationale
This response imposes an expectation of happiness on the client, which may make her feel guilty or inadequate for not feeling happy. It does not validate her current feelings.
Choice D rationale
This response redirects the client’s feelings to another person (her mother) rather than addressing them directly. It may not be helpful if the client does not have a supportive relationship with her mother.