Sandström B, Solheim F
Gynecol Obstet Invest. 1978;9(6):299-303. doi: 10.1159/000300998.
In 167 women blood loss was measured during and after vacuum aspiration for therapeutic abortion in the first trimester of pregnancy. Two different negative pressures were used -49.1 kPa (-0.5 kp/cm2) and -78.5 kPa (-0.8 kp/cm2) in a randomized series. It was found that for the whole first trimester (8--13 weeks) blood loss during and after operation was relatively small and not influenced by the pressure used. In no case blood loss exceeded 500 ml at operation or 60 ml during the first post-operative week. In 6 women post-operative infections were diagnosed.
对167名妊娠早期行负压吸宫术治疗性流产的女性术中及术后的失血量进行了测量。在一个随机序列中使用了两种不同的负压，分别为-49.1 kPa（-0.5 kp/cm²）和-78.5 kPa（-0.8 kp/cm²）。结果发现，在整个妊娠早期（8 - 13周），术中及术后失血量相对较少，且不受所用压力的影响。术中失血量无一例超过500 ml，术后第一周内失血量无一例超过60 ml。6名女性被诊断为术后感染。
