【摘要】 本文报道507例采用宫内节育器(IUD)避孕妇女1565次子宫B型超声测值分析。B超测定之子宫全长78.6±7.53mm(+SD);子宫体长52.9±3.91mm;子宫颈长25.9±4.78mm;子宫前后径36.4±3.17mm;子宫横径50.3±3.83mm;子宫体长与子宫颈长之比为2:1。507例中有脱环史者37例,本次试用期完全脱落、部分脱落及向下移位者共38例,该两组的子宫体长及横径均值分别显著高于507例相应总平均值。说明IUD的几何尺寸明显小于子宫相应径线值时,是造成脱落或下移现象的原因之一。更多还原

【Abstract】 The results of 1565 ultrasonographic measurements of uteri in 507 IUD -wearers are presented. The average age of the subjects was 29 (23-39) years old. Most of them were uniparous women(96.3%). The uterine length, the uterine body length and the cervical length in the total subjects group were 78.6 ± 7.53, 52.9±3.91 and 25.8 ± 4.78 mm respectively. The anterior-posterior diameter and the transverse diameter were 36.4 ± 3.17 and 50.3 ± 3.83 mm respectively. The proportion of the corpus uteri to cervix was approximately 2:1. 37 cases had a history of expulsion and 38 a history of expulsion or downward displacement, which happened during the trial among the 507 subjects. Both values of the uterine body length and the transverse diameter of these two groups were significantly higher than the average values of the 507 cases. On the other hand, the values in the group of removal due to pain/bleeding were relatively smaller. These results indicate that incompatibility of the uterine cavity with the IUDs size may be one of the reasons for IUD expulsion or downward displacement.更多还原