Amniotic fluid index

Amniotic fluid index

• Imagine the uterus in 4 parts and in these 4 parts measure the single largest vertical pocket.

• Here in this image the uterus is divided into 4 quadrants and the single largest vertical pocket namely A, B, C & D are measured.

• AFI= A+B+C+D= 5-24 (NORMAL)

• >25 cm is polyhydramnios & <5 cm oligohydramnios.

• AFI is not appropriate to use in twin pregnancy. Therefore, the best sensitive method is to measure single Deepest vertical pocket (SDP).

Amniotic fluid index explained with images

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