To assess the impact of cannulation of a resistant cervical os with the outer malleable sheath of a doublelumen, soft ET catheter on IVFET outcomes. Retrospective cohort study. Universitybased IVF center. One hund...To assess the impact of cannulation of a resistant cervical os with the outer malleable sheath of a doublelumen, soft ET catheter on IVFET outcomes. Retrospective cohort study. Universitybased IVF center. One hundred fortytwo patients undergoing 142 ETs. Trial ultrasoundguided ET at all transfers, leaving the malleable outer sheath in situ when the soft inner catheter could not negotiate the internal os. Implantation rate and clinical pregnancy rate. In 102 ETs (71.8%), the soft inner sheath easily negotiated the internal os (group 1). Forty ETs (28.2%)required cannulation of resistant internal ora with the outer sheath of the trial catheter (group 2). Implantation rates (35%vs. 32%in groups 1 and 2, respectively) and clinical pregnancy rates (50%vs. 45%) were not significantly different between groups. Blood was present on the transfer catheter after ET more frequently in group 2 than in group 1 (55%vs. 15%); however, neither the implantation rate nor the clinical pregnancy rate were affected by the presence of blood. Cannulation of a resistant internal os by the malleable outer sheath and blood on the transfer catheter after ET do not have an adverse effect on implantation rate or clinical pregnancy rate.展开更多
Clinical pregnancy rate (CPR) and implantation rate (IR) in 1,177 patients who had 1,788 fresh, nondonor, non PGD IVF cycles were highest in cycle 1, significantly declined in cycle 2, and reached a plateau for cycles...Clinical pregnancy rate (CPR) and implantation rate (IR) in 1,177 patients who had 1,788 fresh, nondonor, non PGD IVF cycles were highest in cycle 1, significantly declined in cycle 2, and reached a plateau for cycles 3-5 at a rate lower than in cycle 2. In patients >38 years of age CPR and IR in cycles 1 and 2 were significantly lower than in younger patients, but there was no decline in CPR or IR with advancing IVF attempts.展开更多
文摘To assess the impact of cannulation of a resistant cervical os with the outer malleable sheath of a doublelumen, soft ET catheter on IVFET outcomes. Retrospective cohort study. Universitybased IVF center. One hundred fortytwo patients undergoing 142 ETs. Trial ultrasoundguided ET at all transfers, leaving the malleable outer sheath in situ when the soft inner catheter could not negotiate the internal os. Implantation rate and clinical pregnancy rate. In 102 ETs (71.8%), the soft inner sheath easily negotiated the internal os (group 1). Forty ETs (28.2%)required cannulation of resistant internal ora with the outer sheath of the trial catheter (group 2). Implantation rates (35%vs. 32%in groups 1 and 2, respectively) and clinical pregnancy rates (50%vs. 45%) were not significantly different between groups. Blood was present on the transfer catheter after ET more frequently in group 2 than in group 1 (55%vs. 15%); however, neither the implantation rate nor the clinical pregnancy rate were affected by the presence of blood. Cannulation of a resistant internal os by the malleable outer sheath and blood on the transfer catheter after ET do not have an adverse effect on implantation rate or clinical pregnancy rate.
文摘Clinical pregnancy rate (CPR) and implantation rate (IR) in 1,177 patients who had 1,788 fresh, nondonor, non PGD IVF cycles were highest in cycle 1, significantly declined in cycle 2, and reached a plateau for cycles 3-5 at a rate lower than in cycle 2. In patients >38 years of age CPR and IR in cycles 1 and 2 were significantly lower than in younger patients, but there was no decline in CPR or IR with advancing IVF attempts.
