Rasmussen P
Acta Obstet Gynecol Scand. 1981;60(5):475-9. doi: 10.3109/00016348109155463.
Following therapeutic abortion in 280 patients prior to the 12th week of gestation, and amount of tissue aspirated was investigated. Measurement of the amount of tissue removed by vacuum suction after dilatation of the cervical canal showed a definite relationship between tissue quantity and gestational age. However, there was a wide range of tissue quantity in the various gestational age groups. The amount of blood lost during the procedure also depended upon gestational age. In 71% of the patients less than 100 ml was lost. There was no difference in the amount of blood lost between primigravidae and multigravidae when regard is paid to gestational age. No case of ectopic pregnancy was found. Re-evacuation was performed in 9 cases. The amount of tissue than recovered was small, in 7 cases 10 ml or less. Placental tissue was removed at re-evaluation in only one of these patients, decidua in all the others. It is concluded that measurement of the amount of tissue removed does not permit assessment of whether the uterine cavity has been adequately evacuated.
对280例妊娠12周前接受治疗性流产的患者，研究了吸出组织的量。在宫颈管扩张后通过真空吸引测量吸出组织的量，结果显示组织量与孕周之间存在明确关系。然而，各孕周组的组织量范围较广。手术过程中的失血量也取决于孕周。71%的患者失血量少于100毫升。在考虑孕周的情况下，初产妇和经产妇的失血量没有差异。未发现异位妊娠病例。9例患者进行了再次清宫。再次回收的组织量很少，7例为10毫升或更少。这些患者中只有1例在再次评估时取出了胎盘组织，其他患者均为蜕膜组织。得出的结论是，测量吸出组织的量并不能评估宫腔是否已被充分清空。
