Among all the 7 fetuses,thoracenteses were conducted in 3 fetuses,and cytoscoph,biochemical analyses,TORCH,culture of chlamydia,mycoplasma and bacteria were performed in the pleural fluids.

• 其中3例胎儿行胸腔穿刺术,抽取胸水行细胞检查、胸水生化及TORCH、衣原体、支原体及细菌培养。