Current Surveillance Skip to section menu The studies currently being conducted through UKOSS are: Amniotic Fluid Embolism Cirrhosis in Pregnancy Fontan and Pregnancy Peripartum Hyponatraemia in Pregnancy Diabetic Ketoacidosis (DKA) in Pregnancy Extremely preterm prelabour rupture of membranes (EPPROM) Antithrombin / Protein C deficiency in pregnancy Posters UKOSS Current Studies Poster - Oct 2019 UKOSS Case Definitions Poster - Oct 2019