The cheese-like, whitish substance that fuses with the epidermis and serves as a protective coating is called:
Vernix caseosa
Surfactant
Caput succedaneum
Acrocyanosis
The Correct Answer is A
Vernix caseosa is a cheese-like, whitish substance that fuses with the epidermis and serves as a protective coating for the newborn.
Some possible explanations for the other choices are:
- Choice B. Surfactant is a protein that lines the alveoli of the infant’s lungs and helps prevent them from collapsing.
- Choice C. Caput succedaneum is a swelling of the tissue over the presenting part of the fetal head caused by pressure during delivery.
- Choice D. Acrocyanosis is a bluish discoloration of the hands and feet due to reduced peripheral circulation.
Normal ranges for vernix caseosa are not applicable as it varies depending on the gestational age and skin maturity of the newborn. However, it is usually more abundant in preterm infants than in term or post-term infants.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
This is a normal respiratory change in pregnancy caused by elevated levels of estrogen. Estrogen increases blood flow and causes the nasal mucosa to swell, leading to congestion and nosebleeds. This condition is called pregnancy rhinitis and affects up to 20% of pregnant women.
Choice B is wrong because this is not an abnormal cardiovascular change, and the nosebleeds are not an ominous sign. They are usually harmless and do not affect the pregnancy outcome.
Choice C is wrong because there is no evidence that the woman is a victim of domestic violence.
This is a serious accusation that should not be made without proper assessment and screening.
Choice D is wrong because there is no indication that the woman has been using cocaine intranasally. Cocaine use can cause nasal damage and bleeding, but it can also have other signs and symptoms such as agitation, euphoria, dilated pupils, increased heart rate and blood pressure, and risk of miscarriage or preterm labor.
Correct Answer is A
Explanation
A brilliant, uniform red reflex in both eyes is a sign of a healthy retina and optic nerve. The red reflex is the reflection of light from the retina that varies in color depending on the patient’s skin tone. It can be seen by holding the ophthalmoscope directly in front of your eye and asking the patient to focus on a point in the distance.
Choice B is wrong because an abnormal finding would be an absent or asymmetric red reflex, which could indicate cataracts, retinal detachment, or other eye diseases.
Choice C is wrong because a possible visual defect would not affect the red reflex, but rather the visual acuity or field of vision of the patient.
A vision screening would involve testing the patient’s ability to read letters or numbers at different distances.
Choice D is wrong because small hemorrhages would not cause a brilliant, uniform red reflex, but rather dark spots or blotches on the retina that can be seen with the ophthalmoscope.
Hemorrhages can be caused by diabetes, hypertension, or trauma.
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