Answer: In this case of intrauterine growth restriction (IUGR), the most likely etiology is uteroplacental insufficiency. Uteroplacental insufficiency refers to a condition in which the placenta is unable to provide adequate oxygen and nutrients to the developing fetus, resulting in restricted growth.
Uteroplacental insufficiency can occur due to various factors, such as maternal conditions (e.g., hypertension, diabetes), placental abnormalities, or disruptions in the blood flow between the mother and fetus. This can lead to reduced blood supply to the fetus, resulting in poor growth and development.
Genetic factors and congenital anomalies may contribute to IUGR in some cases, but they are not the most likely etiology in this case. Tobacco use can also have detrimental effects on fetal growth, but it is not the most likely cause based on the information provided. Perinatal infection can affect fetal growth, but it is less likely to be the primary cause compared to uteroplacental insufficiency.
It's important to note that a comprehensive evaluation by a healthcare professional is necessary to determine the exact cause of IUGR in each individual case.
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