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: Late decelerations. This is an incorrect answer that refers to a different type of fetal heart rate patern that indicates uteroplacental insufficiency, which can reduce blood flow and oxygen delivery to the fetus. Late decelerations are characterized by gradual decreases in fetal heart rate that begin after the peak of uterine contractions and return to baseline after the end of contractions. Amnioinfusion is not effective for late decelerations, as it does not address the underlying cause of uteroplacental insufficiency, which may be due to maternal hypertension, diabetes, preeclampsia, or placental abruption.
Choice B Reason: Moderate decelerations. This is an incorrect answer that refers to a non-existent type of fetal heart rate patern, as there is no such term as moderate decelerations. The term moderate refers to the category of fetal heart rate variability, which is a measure of the fluctuations in fetal heart rate around the baseline. Moderate variability indicates normal fetal oxygenation and well-being, while absent or minimal variability indicates fetal hypoxia or distress.
Choice C Reason: Variable decelerations. This is because variable decelerations are a type of fetal heart rate patern that indicates cord compression, which can reduce blood flow and oxygen delivery to the fetus. Variable decelerations are characterized by abrupt decreases in fetal heart rate that vary in onset, depth, and duration, and do not have a consistent relationship with uterine contractions. Amnioinfusion is a procedure that involves infusing saline or lactated Ringer's solution into the amniotic cavity through a transcervical catheter, which can relieve cord compression by increasing the volume of amniotic fluid and cushioning the cord. Amnioinfusion can improve fetal oxygenation and reduce variable decelerations.
Choice D Reason: Early decelerations. This is an incorrect answer that refers to a different type of fetal heart rate patern that indicates head compression, which can stimulate the vagus nerve and slow down the fetal heart rate. Early decelerations are characterized by gradual decreases in fetal heart rate that begin with the onset of uterine contractions and return to baseline with the end of contractions. Early decelerations are benign and do not require intervention, as they reflect normal fetal head descent and progress of labor. Amnioinfusion is not indicated for early decelerations, as it does not affect head compression or vagal stimulation.
Correct Answer is B
Explanation
Choice A Reason: Pulmonary edema is a condition where fluid accumulates in the lungs, causing shortness of breath and difficulty breathing. It can occur in preeclampsia due to increased blood pressure and fluid retention, but it is not a definitive sign of eclampsia.
Choice B Reason: Convulsion (seizure) is a sudden, involuntary contraction of muscles that can cause loss of consciousness, shaking, and twitching. It is the main symptom of eclampsia and distinguishes it from preeclampsia.
Choice C Reason: Renal failure is a condition where the kidneys fail to filter waste products from the blood, resulting in high levels of creatinine and urea. It can occur in preeclampsia due to reduced blood flow to the kidneys, but it is not a specific indicator of eclampsia.
Choice D Reason: Retinal edema is a condition where fluid leaks into the retina, causing blurred vision and flashes of light. It can occur in preeclampsia due to increased blood pressure and damage to the blood vessels in the eye, but it is not a characteristic feature of eclampsia.
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