Abstract
The study aimed to examine the usefulness of modified transabdominal cervicoisthmic cerclage (TAC) using monofilament thread for the prevention of preterm delivery in women with an extremely short cervix after deep conization. We devised a monofilament thread for picking up the seromuscular layer of the site that is slightly cephalad to the internal ostium to prevent injury of the vessels around the uterine cervix. From 2017 to 2020, we performed this modified operation in eight women (nine pregnancies) at 12-16 weeks of gestation with a history of deep cervical conization. A modified TAC was successfully performed in all patients. There was no measurable bleeding, and all patients were discharged without postoperative complications. Their pregnancy courses after the operation were uneventful. Of nine, one patient had premature uterine contractions and underwent cesarean section at 36 weeks (preterm delivery). In the other eight pregnancies, planned cesarean section was performed after 37 weeks of gestation. The median birth weight of the babies was 2996 g (range 2604-3374 g). All patients were discharged on the sixth postoperative day without complications. A modified TAC can be safely performed and may prolong pregnancy without adverse events in patients with an extremely short cervix.
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