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Anchoring device to prevent membrane detachment and preterm premature rupture of membranes after fetal intervention.
Ultrasound in Obstetrics & Gynecology 2024 March 22
OBJECTIVE: Anchoring the fetal membrane to the uterine wall via a novel suture delivery system could reduce the risk of preterm premature rupture of membranes (PPROM) after fetoscopic surgery. This study assesses the feasibility of using a novel device designed for minimally invasive suturing to anchor fetal membranes to the uterine wall and to close surgical defects after fetoscopy.
METHODS: We tested the suturing device both ex vivo and in vivo. In the ex vivo studies, 12-French trocar defects were created with a fetoscope in five specimens of human uterine tissue with fetal membranes attached. Specimens were examined for integrity of the anchoring stitch. For in vivo studies, trocar defects were created in the two uterine horns of three pregnant ewes, each carrying twins at ~79-90 days gestation. One trocar defect in each ewe was repaired using the suture device, and the other was left unrepaired as a control. The repair sites were examined for membrane anchoring integrity when the defect was created and at delivery.
RESULTS: Fetal membranes were successfully anchored to the uterine myometrium using this device in all five trials performed ex vivo. The in vivo trials also revealed successful membrane anchoring compared with controls both at the time of device deployment and five-to-eight weeks after the procedure.
CONCLUSIONS: We successfully anchored amniotic membranes to the underlying myometrium via suturing device both ex vivo and in vivo. Further studies are needed to evaluate the efficacy of the device and to determine whether it can successfully anchor fetal membranes percutaneously in human subjects. This article is protected by copyright. All rights reserved.
METHODS: We tested the suturing device both ex vivo and in vivo. In the ex vivo studies, 12-French trocar defects were created with a fetoscope in five specimens of human uterine tissue with fetal membranes attached. Specimens were examined for integrity of the anchoring stitch. For in vivo studies, trocar defects were created in the two uterine horns of three pregnant ewes, each carrying twins at ~79-90 days gestation. One trocar defect in each ewe was repaired using the suture device, and the other was left unrepaired as a control. The repair sites were examined for membrane anchoring integrity when the defect was created and at delivery.
RESULTS: Fetal membranes were successfully anchored to the uterine myometrium using this device in all five trials performed ex vivo. The in vivo trials also revealed successful membrane anchoring compared with controls both at the time of device deployment and five-to-eight weeks after the procedure.
CONCLUSIONS: We successfully anchored amniotic membranes to the underlying myometrium via suturing device both ex vivo and in vivo. Further studies are needed to evaluate the efficacy of the device and to determine whether it can successfully anchor fetal membranes percutaneously in human subjects. This article is protected by copyright. All rights reserved.
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