宫颈松弛导致的流产做什么检查?What examination does cervix relax cause miscarriage to do?

陈凤林教授指出：宫颈松弛导致的晚期流产要进行宫颈松弛试验检查。宫颈管正常长度为2.5-3cm,当做妇科检查时，宫颈内口能顺利通过7号扩宫棒，或妊娠期无明显腹痛而B超测内口宽度>0.5cm,宫颈管长度<2.5cm,有助于诊断。

Professor Chenfenglin pointed out: Cervical relaxation caused by late miscarriage to carry out cervical relaxation test. The normal length of the cervix tube is 2.5-3cm. When used as a gynecological examination, the cervix can successfully pass through the 7th dilation stick, or there is no obvious abdominal pain during pregnancy and the width of the inside of the B ultrasound is & GT; 0.5 cm, cervical tube length & lt; 2.5 cm, which is helpful for diagnosis.

宫颈松弛最早何时开始呢?一般会在妊娠第4～5个月开始。

When did cervical relaxation begin at the earliest? It usually begins in the 4th to 5th months of pregnancy.