What causes congenital hip dysplasia?

Choice A reason:

Placental insufficiency is a condition in which the placenta does not deliver enough oxygen and nutrients to the developing baby, resulting in restricted growth and development. This is one of the most common causes of SGA babies.

Choice B reason:

Primipara means a woman who is pregnant for the first time or who has given birth to one child. Primipara is not a cause of SGA, although some studies have suggested that first-time mothers may have a slightly higher risk of having a low-birth-weight baby than multiparous women.

Choice C reason:

Maternal obesity is a condition in which the mother has a body mass index (BMI) of 30 or higher before or during pregnancy. Maternal obesity is not a cause of SGA, but rather a risk factor for having a large-for-gestational-age (LGA) baby, which can lead to complications such as macrosomia, shoulder dystocia, and birth trauma.

Choice D reason:

Perinatal asphyxia is a condition in which the baby does not receive enough oxygen before, during, or after birth, causing hypoxia and acidosis. Perinatal asphyxia is not a cause of SGA, but rather a possible complication of SGA, especially if the placental insufficiency is severe or prolonged. Perinatal asphyxia can damage the brain and other organs of the baby and lead to long-term neurological impairments.

Choice A reason:

Infection is not prevented by vitamin K administration. Vitamin K is needed for blood clotting, not for fighting infections. Newborns are given vitamin K injections to prevent a serious disease called hemorrhagic disease of the newborn (HDN), which is caused by bleeding in the brain or other organs.

Choice B reason:

Hyperbilirubinemia is not prevented by vitamin K administration. Hyperbilirubinemia is a condition in which there is too much bilirubin in the blood, causing jaundice. Bilirubin is a yellow pigment that is produced when red blood cells break down. Vitamin K does not affect the production or breakdown of bilirubin.

Choice C reason:

Bleeding is prevented by vitamin K administration. Vitamin K is needed for the synthesis of several clotting factors that help stop bleeding when there is an injury. Newborns have very low levels of vitamin K in their bodies because they do not get enough from the placenta or breast milk, and they do not have enough bacteria in their intestines to produce it. This puts them at risk for VKDB, which can cause life-threatening bleeding in the brain or other organs.

Choice D reason:

Potassium deficiency is not prevented by vitamin K administration. Potassium is an electrolyte that is important for nerve and muscle function, as well as fluid balance. Vitamin K does not affect the absorption or excretion of potassium.