What does AF stand for?

Amniocentesis, usually done at 16 weeks, involves inserting a needle through the uterus to draw out a sample of amniotic fluid from around the baby for testing.

A second independent expert, consultant pathologist Dr Kevin West, said amniotic fluid embolism had occurred and was associated with cardiac collapse.

Five conditions that can lead to pregnancy-related deaths were considered in the analyses of severe maternal morbidity: acute fatty liver of pregnancy (a buildup of fat in the liver), amniotic fluid embolism (the presence of amniotic fluid, fetal cells or other debris in the woman's circulatory system), pulmonary embolism, eclampsia (characterized by convulsions during pregnancy or the first 10 days after delivery, followed by specified clinical events) or hysterectomy at the time of delivery.

Yet remarkably both babies survived, despite Becky's womb continuing to leak precious amniotic fluid, and were delivered by emergency caesarian 34 weeks into the pregnancy.

They turned to samples of amniotic fluid saved from women who had gone into preterm labor at a Detroit hospital between 1998 and 2002.

Other comprehensive examinations described here include cerebrospinal fluid, semen, synovial fluid, serous fluid, amniotic fluid and feces.

When we first meet Kyle XY (Matt Dallas) he is sleeping, crouched in a foetal position in a forest on the outskirts of Seattle, naked as a new-born and covered in a sticky goo like some kind of amniotic fluid.

Mr Cabrera was told immediately afterwards by doctors that she had died from an amniotic fluid embolism.