A nurse is examining a newborn’s ears.
The nurse should identify that which of the following findings may indicate a chromosomal disorder?
The newborn has low-set ears.
The newborn has small ear canals.
The newborn has dry cerumen in the ears.
The newborn has prominent antihelices.
The Correct Answer is A
The newborn has low-set ears.
Low-set ears are ears that are positioned below the normal horizontal line drawn across both inner canthi of the eyes. Low-set ears may indicate a chromosomal disorder, such as DiGeorge syndrome or Noonan syndrome, or other congenital anomalies.
Choice B is wrong because small ear canals are not a sign of a chromosomal disorder, but rather a variation of normal anatomy.
Choice C is wrong because dry cerumen in the ears is not a sign of a chromosomal disorder, but rather a result of dehydration or lack of humidity.
Choice D is wrong because prominent antihelices are not a sign of a chromosomal disorder, but rather a normal feature of the external ear.
The antihelix is the curved prominence of cartilage parallel with and inside the helix (the rim) of the ear.
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Related Questions
Correct Answer is A
Explanation
The newborn has low-set ears.
Low-set ears are ears that are positioned below the normal horizontal line drawn across both inner canthi of the eyes.Low-set ears may indicate a chromosomal disorder, such asDiGeorge syndromeorNoonan syndrome, or other congenital anomalies.
Choice B is wrong because small ear canals are not a sign of a chromosomal disorder, but rather a variation of normal anatomy.
Choice C is wrong because dry cerumen in the ears is not a sign of a chromosomal disorder, but rather a result of dehydration or lack of humidity.
Choice D is wrong because prominent antihelices are not a sign of a chromosomal disorder, but rather a normal feature of the external ear.
The antihelix is the curved prominence of cartilage parallel with and inside the helix (the rim) of the ear.
Correct Answer is B
Explanation
The newborn has a red reflex in both eyes.This is an expected finding that indicates the absence of cataracts or other eye abnormalities.The red reflex test is performed by using an ophthalmoscope to shine a light into the baby’s eyes and observing the reflection.
The newborn has blue or gray eyes at birth: This statement is wrong because eye color can vary at birth and may change over time.Eye color is determined by the amount and distribution of melanin in the iris.
The newborn has a nystagmus when looking to the side.This statement is wrong because nystagmus is an abnormal eye movement that can indicate a neurological problem or a visual impairment.
The newborn has a strabismus when focusing on an object.This statement is wrong because strabismus is a misalignment of the eyes that can cause amblyopia (lazy eye) or double vision.Strabismus may be present at birth or develop later in life.
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