abnormal fluid regulation abnormal amniotic fluid composition MP:0012172 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 abnormal liquor amnii composition MPheno.ontology 2013-10-30T16:03:31Z csmith abnormal acqua amnii composition