Anaphylaxis - amniotic fluid embolism

A 37-years old obese patient (IV. gravida, tercipara, 38. gestational week) is admitted to hospital due to a delivery in progress. After being transferred to a delivery room she is suddenly anxious and short of breath. Blood pressure is 80/40 mmHg, tachycardia is present 130 bpm. A ''blue mask'' syndrome appears, oxygen saturation drops to 40 %, patient falls unconscious with convulsions of face muscles. The gynecologist calls the CPR team. We can see a decrease in a heart rate of a fetus from 140 to 80 bpm on cardiotocographic monitoring.
37
years
woman
RR
33 /min
HR
140 /min
SpO2
40 %
BP
80/40 (53) mmHg
Examination
From history of the patient there were two physiological deliveries, one spontaneous abortion and cardiovascular disease in a family.