ObjectiveTo investigate the efficacy of disposable laminaria dilator applied to cervical preconditioning before hysteroscopy. MethodsA total of 108 patients were enrolled and underwent hysteroscopic surgery due to irregular uterine bleeding, endometrial polyps, infertility, intrauterine adhesion or intrauterine foreign body residue, etc. . The patients were randomly divided into study group and control group, with 54 cases in each group.The study group received cervical preconditioning by placement of disposable laminaria dilator into uterine cavity after regular disinfection of vulva and vagina before 5 minutes of operation.The control group received cervical preconditioning by placement of misoprostol 0.2mg into posterior vaginal fornix after cleaning the vulva with iodine at the night before operation( 10 P.M) and in the morning of operation (6 A.M. ). The operative duration, intraoperative blood loss and condition of cervical dilation were recorded in both groups. ResultsThe operative duration and intraoperative blood loss in the study group ［(19.10±5.2)min and （25.10±8.5）mL, respectively］ were less than those in the control group ［(30.20±6.8)min and(45.30±11.5)mL, respectively］ (P＜0.05). The effectiveness rate of cervical dilation in the study group was higher than that in the control group［96.30%（52/54）vs. 81.48%(44/54), P＜0.05］.There was no significant difference in the incident rate of complications between the two groups(P＞0.05). ConclusionCervical preconditioning with disposable laminaria dilator before hysteroscopy can soften and expand the cervical canals, reduce intraoperative hemorrhage, shorten the operative duration, effectively improve the working efficiency, and is worthy of clinical promotion.

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