abnormal fluid regulation abnormal amniotic fluid composition 2013-10-30T16:03:31Z MP:0012172 MPheno.ontology abnormal acqua amnii composition abnormal liquor amnii composition any alteration in the expected chemical makeup of the watery liquid within the amnion that surrounds and cushions a growing fetus; normally, early in gestation, amniotic fluid is similar to maternal plasma, mainly water with electrolytes, and later in gestation, proteins, carbohydrates, lipids, phospholipids originating from the lungs, fetal cells, and urea are deposited in the fluid csmith