The nurse is performing a newborn physical assessment and is about to elicit the Moro reflex. Which of the following responses should the nurse expect to see?
Select one:
The cheek of the newborn is touched, and the newborn turns toward the side that was touched.
The newborn is suddenly lowered or startled, and they extend their arms, legs and neck, then rapidly bring their arms together.
The newborn is supine and their head is turned to one side, then the arm on that same side extends.
The lateral aspect of the sole of the newborn's foot is stroked, and the toes extend and fan outward.
The Correct Answer is B
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.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason: Contact the physician, as it indicates early DIC. This is an incorrect answer that confuses a low pulse rate with a high pulse rate. DIC stands for disseminated intravascular coagulation, which is a life-threatening condition where abnormal clotting and bleeding occur simultaneously in the body. DIC can occur as a complication of postpartum hemorrhage, infection, or placental abruption. DIC can cause tachycardia (high pulse rate), not bradycardia (low pulse rate).
Choice B Reason: Contact the physician, as it is a first sign of postpartum eclampsia. This is an incorrect answer that misinterprets a low pulse rate as a sign of hypertension. Postpartum eclampsia is a condition where seizures occur in a woman who has preeclampsia or eclampsia after delivery. Preeclampsia and eclampsia are characterized by high blood pressure and proteinuria in pregnancy. Postpartum eclampsia can cause hypertension (high blood pressure), not hypotension (low blood pressure).
Choice C Reason: Document the finding as it is a normal finding at this time. This is because a pulse rate of 60 beats per minute is within the normal range for an adult and may reflect a physiological adaptation to the postpartum period. During pregnancy, the maternal blood volume and cardiac output increase, which can elevate the pulse rate. After delivery, these parameters gradually return to pre-pregnancy levels, which can lower the pulse rate.
Choice D Reason: Obtain an order for a CBC, as it suggests postpartum anemia. This is an incorrect answer that assumes that a low pulse rate is caused by anemia. Anemia is a condition where the red blood cell count or hemoglobin level is lower than normal, which can impair oxygen delivery to the tissues. Anemia can occur in the postpartum period due to blood loss during delivery or poor nutritional intake during pregnancy. Anemia can cause tachycardia (high pulse rate), not bradycardia (low pulse rate).

Correct Answer is D
Explanation
Choice A Reason: "Your body is responding to the events of labor, just like after a tough workout." This is an inaccurate statement that does not explain the cause of the contractions or reassure the client.
Choice B Reason: "This could be a sign that your body is trying to get rid of retained placental fragments." This is an alarming statement that may scare the client and imply that something is wrong. Retained placental fragments are rare and usually cause heavy bleeding, fever, and infection.
Choice C Reason: "Let me check your vaginal discharge just to make sure everything is fine." This is an unnecessary statement that does not answer the client's question or provide any information.
Choice D Reason:"The baby's sucking releases oxytocin which causes your uterus to contract." This is a correct statement that explains the physiological mechanism of the contractions and reassures the client that they are normal and beneficial.
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