In a client's seventh month of pregnancy, she reports feeling "dizzy, like I'm going to pass out, when I lie down ﬂat on my back". The nurse explains that this is due to:
Select one:

Physiologic anemia due to maternal increased plasma volume.

Pressure of the gravid uterus on the maternal inferior vena cava and aorta.

Pressure of the presenting fetal part on the maternal diaphragm.

A 50% increase in maternal blood volume during pregnancy.

Answer and Explanation

The Correct Answer is B

Choice A Reason: Physiologic anemia due to maternal increased plasma volume. This is an incorrect answer that refers to a diﬀerent condition that aﬀects hemoglobin levels, not blood pressure. Physiologic anemia is a condition where the maternal plasma volume increases more than the red blood cell mass during pregnancy, which dilutes the hemoglobin concentration and lowers the hematocrit value. Physiologic anemia does not cause significant symptoms or complications in pregnant women, as it is an adaptive mechanism that enhances oxygen delivery and prevents ﬂuid overload.

Choice B Reason: Pressure of the gravid uterus on the maternal inferior vena cava and aorta. This is because this statement explains the cause of supine hypotensive syndrome, which is a condition where lying ﬂat on the back causes compression of the major blood vessels by the gravid uterus, which reduces venous return and cardiac output, which lowers blood pressure and perfusion to vital organs. Supine hypotensive syndrome can cause symptoms such as dizziness, lightheadedness, nausea, pallor, or syncope in pregnant women, especially in the third trimester.

Choice C Reason: Pressure of the presenting fetal part on the maternal diaphragm. This is an incorrect answer that indicates a diﬀerent condition that aﬀects respiratory function, not blood pressure. Pressure of the presenting fetal part on the maternal diaphragm is a result of cephalic engagement or lightening, which occurs when the fetal head descends into the pelvis and occupies more space in the abdominal cavity. Pressure of the presenting fetal part on the maternal diaphragm can cause symptoms such as dyspnea, heartburn, or rib pain in pregnant women.

Choice D Reason: A 50% increase in maternal blood volume during pregnancy. This is an incorrect answer that describes a normal physiological change that occurs during pregnancy, not a cause of supine hypotensive syndrome. A 50% increase in maternal blood volume during pregnancy is due to increased production of plasma and red blood cells, which helps meet the increased oxygen and nutrient demands of the fetus and placenta, and prepares the mother for blood loss during delivery. A 50% increase in maternal blood volume during pregnancy does not cause hypotension or dizziness in pregnant women.

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Correct Answer is C

Explanation

Choice A Reason: Continuing to monitor and document fetal heart rate. This is an inadequate response that does not address the urgency of the situation or intervene to prevent fetal distress or demise.

Choice B Reason: Changing the mother's position to left lateral and giving oxygen by nasal cannula. This is a partial response that may improve maternal-fetal blood ﬂow and oxygenation, but it does not resolve the cord compression or facilitate delivery.

Choice C Reason: With a sterile glove, maintaining pressure to lift the presenting part and emergently notifying the provider for a STAT C-section. This is an appropriate response that aims to reduce the cord compression by elevating the fetal head away from the cord and prepare for an immediate cesarean delivery.

Choice D Reason: Bolusing the patient with 1000cc lactated ringers. This is an irrelevant response that does not address the cause of the problem or improve fetal outcome.

A. The cheek of the newborn is touched, and the newborn turns toward the side that was touched. B. The newborn is suddenly lowered or startled, and they extend their arms, legs and neck, then rapidly bring their arms together. C. The newborn is supine and their head is turned to one side, then the arm on that same side extends. D. The lateral aspect of the sole of the newborn's foot is stroked, and the toes extend and fan outward.

Correct Answer is B

Explanation

Choice A Reason: The cheek of the newborn is touched, and the newborn turns toward the side that was touched. This is an incorrect answer that describes a diﬀerent reﬂex called the rooting reﬂex. The rooting reﬂex is a feeding reﬂex that helps the newborn locate the nipple and initiate sucking. The rooting reﬂex is elicited by stroking the cheek or corner of the mouth of the newborn, which causes them to turn their head and open their mouth toward the stimulus.

Choice B Reason: The newborn is suddenly lowered or startled, and they extend their arms, legs and neck, then rapidly bring their arms together. This is because this response describes the Moro reﬂex, which is a primitive reﬂex that is present at birth and disappears by 3 to 6 months of age. The Moro reﬂex is elicited by simulating a falling sensation or a loud noise, which triggers a fear response in the newborn. The Moro reﬂex consists of four phases: extension, abduction, adduction, and crying.

Choice C Reason: The newborn is supine and their head is turned to one side, then the arm on that same side extends. This is an incorrect answer that refers to another reﬂex called the tonic neck reﬂex. The tonic neck reﬂex is a postural reﬂex that helps prepare the newborn for voluntary reaching. The tonic neck reﬂex is elicited by placing the newborn in a supine position and turning their head to one side, which causes them to assume a "fencing" posture with one arm extended and one arm ﬂexed.

Choice D Reason: The lateral aspect of the sole of the newborn's foot is stroked, and the toes extend and fan outward. This is an incorrect answer that indicates a diﬀerent reﬂex called the Babinski reﬂex. The Babinski reﬂex is a neurological reﬂex that tests for spinal cord integrity. The Babinski reﬂex is elicited by stroking the lateral aspect of the sole of the foot from heel to toe, which causes the big toe to dorsiﬂex and the other toes to fan out.

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In a client's seventh month of pregnancy, she reports feeling "dizzy, like I'm going to pass out, when I lie down ﬂat on my back". The nurse explains that this is due to: Select one:

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Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is B

Explanation

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In a client's seventh month of pregnancy, she reports feeling "dizzy, like I'm going to pass out, when I lie down ﬂat on my back". The nurse explains that this is due to:
Select one: