Newborns receive vitamin K soon after birth because:
the liver of a newborn does not produce enough vitamin K.
hemolysis of the fetal red blood cells increases coagulation requirements.
the newborn diet lacks vitamin K.
newborns are born with a sterile gut.
The Correct Answer is D
Rationale:
A. While the newborn liver has some immaturity, the main reason for vitamin K administration is not liver production alone.
B. Hemolysis of fetal red blood cells does not significantly affect coagulation factor levels requiring vitamin K.
C. Newborns receive vitamin K through breast milk or formula, but the immediate postnatal administration is not due to dietary deficiency.
D. Newborns are born with a sterile gut, lacking the intestinal flora that synthesize vitamin K. This predisposes them to vitamin K deficiency and increases the risk of hemorrhagic disease of the newborn, so prophylactic vitamin K is administered shortly after birth.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Rationale:
A. Erythema multiforme is a hypersensitivity reaction characterized by target-like lesions, not related to seborrheic dermatitis.
B. Cradle cap is the common term for seborrheic dermatitis in infants, typically presenting as greasy, yellowish scales on the scalp. It is usually benign and self-limited.
C. Hives, or urticaria, are raised, itchy wheals caused by allergic reactions and are distinct from seborrheic dermatitis.
D. Impetigo is a bacterial skin infection, often with honey-colored crusts, and is not related to seborrheic dermatitis.
Correct Answer is B
Explanation
Rationale:
A. Visits every 2 weeks until 16 weeks are not standard; early prenatal visits are generally spaced slightly farther apart unless high-risk conditions exist.
B. Prenatal visits are typically scheduled every 4 weeks until 28 weeks’ gestation for a healthy, low-risk pregnancy. These visits monitor maternal and fetal health, provide education, and identify potential complications early.
C. Between 28 and 36 weeks, visits usually occur every 2 weeks, not every 4 weeks.
D. After 36 weeks, visits are generally weekly to closely monitor maternal and fetal well-being before delivery.
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