关键词: 宫颈机能不全, 孕前诊断, 流产, 早产

Abstract:

Abstract:Cervical incompetence is the major cause of perinatal morbidity and mortality rate due to uterine factors, the occurrence rate is about 0.1%－1%. Pregnancy history such as abortion and preterm birth history, uterine malformation and cervical operation history is critical to the diagnosis of cervical incompetence; Next is imaging examination, the most commonly used method is vaginal ultrasound, hysterosalpingography under X-ray and magnetic resonance imaging has been less used; Passage of dilator through the internal os and the Foley traction test has some subjectivity at the time of diagnosis, and it has the risk of intrauterine infection, so they have been less used in clinical hospital;Laparoscopy and hysteroscopy examination are rarely used because of the technology and equipment constraints; In addition, cervical incompetence may be related to gene expression, but has not yet been confirmed. Combine the history with auxiliary examination to diagnose earlier and give proper treatment, we can avoid pregnancy loss and premature birth to a certain extent, and improve the pregnancy outcome. 

Key words: cervical incompetence, progestational diagnosis, abortion, preterm birth