人工流产宫腔内压及宫腔血液逆流机理的研究

Study on Intrauterine Pressure and Mechanism of Intrauterine Blood Reflux during Induced Abortion.

对110例早孕妇女人工流产术前、术时和术后的宫腔内压(IUP)进行测定,其中33例在B超监视下手术。结果表明;①正常早孕妇女(孕6～12周)的IUP平均为2.19±0.85kPa(95％可信限:2.03,2.22kPa),早孕妇女的IUP记录曲线呈低幅度波形;②术时IUP为正压,术时和术后IUP变化幅度及频率均较术前明显增高,术时负压较高时IUP随之升高;③术时宫腔血液逆流发生率为33.33％,术时IUP较高组血液逆流发生率较高,揭示术时较高负压手术可能是导致子宫内膜异位症的一种高危因素。

Intrauterine pressure (IUP) in 110 healthy women with early pregnancy was measured before, during and after induced abortion. Thirty-three cases were performed under ultrasound scanning. The results showed;(1) IUP of 110 healthy women with early pregnancy was 2. 19 ±0. 85 kPa in average (95% confidential limit:2. 03,2. 22) . frequency 0 time per minute, with low and unremarkably fluctuation. (2) IUP during the vacuum aspiration was positive, its amplitude and frequency during and after the operation was much higher than that before the operation (P<0. 01); IUP during the operation was remarkably increased when negative pressure was higher. (3) Incidence of intrauterine blood reflux during the operation was 33. 33%, and the group of higher IUP during the operation had a higher incidence of intrauterine blood reflux. It is suggested that higher negative pressure during the operation is probably a reason for intrauterine blood reflux and one of high risk factors which leads to endometriosis.