Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
Health Science Faculty Office, University of Bristol, Bristol, UK.
Int J Gynaecol Obstet. 2021 Oct;155(1):23-25. doi: 10.1002/ijgo.13837.
A pessary is a device made of synthetic material that is placed in the vagina and has been used for prevention of preterm birth. It has been suggested that a potential mechanism of the pessary is alteration of the cervico-uterine angle to a more posterior position, which reduces cervical compression in women with a singleton pregnancy and a short cervical length. Pessaries should not be used in routine clinical care to reduce the frequency of preterm birth or to improve outcomes (e.g. neonatal outcomes) related to preterm birth. In women with a twin pregnancy-regardless of cervical length-pessaries should not be used in routine clinical care to reduce the frequency of preterm birth or to improve outcomes (e.g. neonatal outcomes) related to preterm birth. Presently there is no sufficient evidence suggesting that pessaries should be used as a standard treatment to prevent preterm birth; their use should be reserved for study populations.
子宫托是一种由合成材料制成的器械，放置在阴道内，用于预防早产。有研究表明，子宫托的潜在作用机制是改变子宫颈-子宫角的位置，使其更向后，从而减少单胎妊娠和宫颈较短的女性的宫颈受压。子宫托不应用于常规临床护理，以减少早产的频率或改善与早产相关的结局（如新生儿结局）。对于双胎妊娠的女性-无论宫颈长度如何-子宫托都不应用于常规临床护理，以减少早产的频率或改善与早产相关的结局（如新生儿结局）。目前没有足够的证据表明子宫托应作为预防早产的标准治疗方法；其使用应保留在研究人群中。
