1　病例介绍患者 2 2岁 ,妊娠 33周。 1999年 9月 11日 19:0 0时出现轻微不规律宫缩 ,阴道无流水 ,未见红 ,于 2 1:40时步行急诊入院。测生命体征正常 ,2 1:5 0时用超声多普勒胎心监测仪监测胎心 ,当涂有耦合剂的探头接触产妇腹部时 ,产妇很快感觉呼吸困难 ,腹部皮肤出现小丘疹 1 case description of patients 2 2 years old, 33 weeks of pregnancy. At 11:01 on September 11, 1999, there was a slight irregular contractions, vaginal no water, no red, at 2 1:40 walking emergency admission. The vital signs were normal. At 2150, the fetal heart rate was monitored by FCD and when the probe coated with the couplant contacted the abdomen of the maternal, the maternal woman soon felt dyspnea and the pimples appeared on the abdomen skin