A pregnant woman, aged 35, is in grave condition, complains of headache, vision disorders, "midges" before the eyes. On examination: anasarca, BP - 180/120 mm Hg. Suddenly there appeared fibrillar twitching of the facial muscles, tonic spasms. Breathing stopped. 1 minute later breathing restartedA profuse foam discharge from the mouthAmnesia. In clinical urine analysis: protein - 7 g/L. What is the most likely diagnosis