Abstract
Objective: The aim of the study was to investigate the efficacy of flexible embryofetoscopy for visualization of the first trimester human embryo and fetus. Method: Twelve pregnant women scheduled for legal termination of pregnancy at 6–12 weeks' gestation were included in the study. A flexible fiber optic endoscope with an eyepiece connected to a monitor was used. The sterile endoscope was passed transcervically under ultrasound guidance through the chorion into the chorionic cavity. Embryos/fetuses were observed directly through the intact amniotic membrane. Result: Successful embryofetoscopies with clear visualization of the embryo or fetus were accomplished in 50% of cases. There were no procedure-related complications. Conclusion: Preliminary experience employing transcervical flexible embryofetoscopy for direct visualization of the first trimester human embryo and fetus suggest that this technique may be used for the early identification of congenital anomalies suspected by ultrasound and is expected to offer opportunities for embryo/fetal tissue sampling as well as for gene and cell therapies.
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