Early detection allows for antenatal management for better neonatal outcomes. Your patient is 32 weeks gestation, gravida 5 para 4 and after a routine ultrasound she is told her baby is very small and has IUGR. She asks you what causes this and you tell her:
Infection
Previous preterm birth
Utero-placental insufficiency
Chronic hypertension
The Correct Answer is C
Choice A reason: Infection is not a common cause of IUGR, as most infections do not cross the placenta and affect the fetal growth. However, some infections such as cytomegalovirus, rubella, or toxoplasmosis can cause congenital anomalies and IUGR.
Choice B reason: Previous preterm birth is not a direct cause of IUGR, as it does not affect the current pregnancy. However, it may indicate an underlying maternal or fetal condition that could increase the risk of IUGR, such as cervical incompetence, placental abruption, or preeclampsia.
Choice C reason: Utero-placental insufficiency is the most common cause of IUGR, as it reduces the blood flow and oxygen delivery to the fetus. It can result from maternal factors such as hypertension, diabetes, smoking, or drug abuse, or from placental factors such as placenta previa, placental infarction, or cord compression.
Choice D reason: Chronic hypertension is a risk factor for IUGR, as it can lead to utero-placental insufficiency and fetal hypoxia. However, it is not the only cause of IUGR, as other factors can also affect the placental function and fetal growth.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Poor maternal weight gain is a risk factor for IUGR, as it indicates inadequate nutrition and fetal growth.
Choice B reason: Premature rupture of membranes is not a risk factor for IUGR, as it does not affect the placental function or blood flow. It is a complication of pregnancy that can lead to infection, preterm labor, or cord prolapse.
Choice C reason: Smoking is a risk factor for IUGR, as it reduces the oxygen and nutrient delivery to the fetus and causes vasoconstriction of the placental vessels.
Choice D reason: Gestational hypertension is a risk factor for IUGR, as it impairs the placental perfusion and causes fetal hypoxia and acidosis.
Correct Answer is B
Explanation
Choice A reason: Hyperbilirubinemia is incorrect because it is not a major complication of infants of diabetic mothers. It is a condition where the baby has high levels of bilirubin in the blood, which can cause jaundice. It can occur in any newborn, but it is more common in premature babies, babies with blood type incompatibility, or babies with infections.
Choice B reason: Hypoglycemia is correct because it is a major complication of infants of diabetic mothers. It is a condition where the baby has low blood sugar levels, which can cause seizures, lethargy, or poor feeding. It can occur because the baby's pancreas produces too much insulin in response to the mother's high blood sugar levels during pregnancy.
Choice C reason: Hypoinsulinemia is incorrect because it is not a major complication of infants of diabetic mothers. It is a condition where the body does not produce enough insulin, which can cause high blood sugar levels. It can occur in children or adults with type 1 diabetes, but not in newborns of diabetic mothers.
Choice D reason: Hypercalcemia is incorrect because it is not a major complication of infants of diabetic mothers. It is a condition where the baby has high levels of calcium in the blood, which can cause muscle weakness, vomiting, or kidney stones. It can occur in babies with certain genetic disorders, such as Williams syndrome, or babies with hyperparathyroidism, but not in infants of diabetic mothers.
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