Which of the following would not be an indication of placental detachment（）

A. An abrupt lengthening of the cord.

B. An increase in the number of contractions.

C. Relaxation of the uterus.

D. Increased vaginal bleeding.

男性，72岁，反复哮喘40年，加重伴双下肢水肿5年哮喘加重1周，黄痰多1天。白天嗜睡，夜间失眠

以下检查有意义的是（）

A.脑电图

B.心电图

C.血气分析

D.血流图

E.脑CT