Pregnant at 35 weeks, serious condition. Complains of headache, impaired vision, flickering "flies" in front of the eyes. Examination revealed: general edema, AT - 180/120 mm Hg Art. Suddenly there were fibrillar twitching of facial muscles, tonic convulsions. Breathing stopped. In 1 minute breathing was restored. From the mouth came out a lot the amount of foam. Amnesia. Proteinuria - 7 g/l. What is the probable diagnosis?