Is symmetrical or asymmetrical IUGR worse?

Infants with IUGR may continue to show signs of abnormal growth throughout childhood. Infants with asymmetric IUGR (head-sparing) typically have more robust catch-up postnatal growth, as compared with infants with symmetric IUGR, who may remain small throughout life.

What does asymmetric IUGR mean?

Asymmetrical intrauterine growth restriction is a type of intrauterine growth restriction (IUGR) where some fetal biometric parameters are disproportionately lower than others, as well as falling under the 10th percentile. The parameter classically affected is the abdominal circumference (AC).

What causes symmetric IUGR?

Symmetrical IUGR Caused by intrinsic factors (e.g., genetic abnormalities, infections), which affect the fetus in the early stages of gestation.

What is the difference between symmetry and asymmetry?

We find perfect symmetry when two mirrored sides are exactly the same. Conversely, asymmetry is the absence of symmetry of any kind. Whenever we make a design that consists of elements that we’ve distributed unevenly around a central point or axis, we’ll consequently have an asymmetrical design.

Can asymmetric IUGR be reversed?

Depending on the cause, IUGR may be reversible. Before offering treatment, your doctor may monitor your fetus using: ultrasound, to see how their organs are developing and to check for normal movements.

Which of the following maternal conditions may place an infant at risk for asymmetric intrauterine growth restriction?

Pregnancies that have any of the following conditions may be at a greater risk at developing IUGR: Maternal weight less than 100 pounds. Poor nutrition during pregnancy. Birth defects or chromosomal abnormalities.

What is the most common cause of fetal growth restriction?

The condition is most commonly caused by inadequate maternal-fetal circulation, with a resultant decrease in fetal growth. Less common causes include intrauterine infections such as cytomegalovirus and rubella, and congenital anomalies such as trisomy 21 and trisomy 18.

What is asymmetric growth?

Asymmetric growth restriction implies a fetus who is undernourished and is directing most of its energy to maintaining growth of vital organs, such as the brain and heart, at the expense of the liver, muscle and fat. This type of growth restriction is usually the result of placental insufficiency.

What is symmetrical growth?

Symmetrical growth restriction was defined as a birth weight below the 16th percentile (–1 SD) compared with full-terms and a head circumference (HC) z score not exceeding the infant’s birth weight z score by >1 SD.

What is the difference between symmetric and asymmetric in chemistry?

A symmetrical molecule is one whose appearance does not change if you turn it about an axis of symmetry; original and rotated states are indistinguishable from one another. By contrast, an asymmetrical molecule has no axis of symmetry; you can tell if it has been rotated.