Obstetrics Normal Values Flashcards
1
Q
Amniotic fluid index
A
5 to 20 cm
2
Q
Placental thickness
A
1 to 4 cm
3
Q
3rd ventricle width
A
< 3.5 mm
4
Q
Atrial part of the ventricle
A
Do not normally exceed 10 mm
5
Q
Normal cisternal magna width
A
2 to 11 mm width
< 2 = Chiari malformation
> 11 = Dandy walker malformation spectrum
6
Q
Small bowel diameter
A
Less than 6 mm in diameter
Less than 14 mm in length
7
Q
Colon
A
does not exceed 23 mm in diameter