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随着避孕知识的普及,意外妊娠明显减少。但由于各种原因需终止妊娠的患者仍很多,1999年以前,人工流产数在1千万次左右〔1〕。目前国内最普遍采用的是人工负压吸宫术终止早孕,该方法操作简便,手术时间短,流产效果好,但给患者造成的痛苦较大。虽然出现了无痛人流,但因其需全身麻
With the popularization of contraceptive knowledge, unexpected pregnancy decreased significantly. However, due to various reasons, there are still many patients needing termination of pregnancy. Before 1999, the number of induced abortions was about 10 million times [1]. At present, the most commonly used method in China is to terminate early pregnancies by artificial vacuum aspiration, which is easy to operate, has short operation time and good abortion effect, but causes more pain to patients. Although there has been painless, but because of the need for general anesthesia