Fetal GI System Flashcards
The gut develops at the end of the ____ week
5th week
Transvaginally, the stomach can be seen as early as ___ weeks. But should definitely be seen by ____ weeks
8 weeks but definitely by 14 weeks
Large bowel contains hypoechoic _____
Meconium
AC should include
- Umbilical vein
- spine
- stomach
Congenital absense of part of the esophagus
Esophageal atresia
In response to esophageal atresia, the body often forms an abnormal connection called:
Tracheoesophageal fistula
Congenital maldevelopment or absence of the duodenum
Duodenal atresia
Sign associated with duodenal atresia
Double bubble sign
Double bubble sign is:
Fluid filled stomach and proximal duodenum
Duodenal atresia is associated with what chromosomal anomaly
Trisomy 21
Most common abnormality of the fetal liver
Hepatomegaly
The largest lobe in the fetal liver is:
The left lobe
No identifiable stomach and severe polyhydramnios would indicate
Esophageal atresia
Echogenic bowel is associated with
- trisomy 21
- cystic fibrosis
- cytomegalovirus
- GI obstruction
What sign is this? What is this associated with?
- Double bubble sign
- duodenal atresia
What sign is this? What is it associated with?
Double bubble
Duodenal atresia
Most common type of colon atresia that will lead to bowel obstruction
Anorectal atresia
Dilated fetal rectum
Anorectal atresia
Functional bowel obstruction caused by absence of nerves within bowel wall
Hirschprung disease
Are MSAFP levels higher in gastroschisis or omphalocele?
Gastroschisis
Herniation of abdominal contents through a RIGHT sided abdominal wall defect
Gastroschisis
Gastroschisis will have (normal/abnormal) cord insertion
Normal
Herniation of bowel/abdominal contents into the base of the umbilical cord
Omphalocele
Poorer prognosis of omphalocele occurs when mass contains ____
Liver
Gastroschisis
How to distinguish gastroschisis vs omphalocele
Gastroschisis— open defect, RIGHT side
Omphalocele— closed defect, midline
Omphalocele
