Gian Mario Tiboni1, Enrica Concetta Colangelo, Emiliana Leonzio, Elisabetta Gabriele. 1. Unità di Procreazione Medicalmente Assistita, Dipartimento di Medicina e Scienze dell'Invecchiamento, Facoltà di Medicina e Chirurgia, Università, G. d'Annunzio, Chieti-Pescara, Ospedale, Bernabeo, Ortona, Chieti, Italy. tiboni@unich.it
Abstract
OBJECTIVE: This retrospective case-control study was undertaken to assess the impact of a malleable stylet application on embryo transfer (ET) outcome. METHODS: The Wallace malleable stylet was used when the soft inner catheter could not negotiate the internal os during ultrasound-guided ET. Patients having an age ≤37 years, with three embryos replaced were included in the analysis. Implantation rate, clinical pregnancy rate and live birth rate were the main outcome measures. RESULTS: The Wallace malleable stylet was applied in 164 (29.6%) of the 553 ETs evaluated. Implantation rate, clinical pregnancy rate and live birth rate showed a 5.6% (19.4% vs. 13.8%), a 10.8% (41.9% vs. 31.1%) and a 9.9% (37.3% vs. 27.4%) absolute difference, respectively, in favor of ETs not requiring the stylet. These differences were statistically significant (P < 0.05). CONCLUSIONS: ETs requiring stylet are associated with lower implantation, clinical pregnancy and live birth rates.
OBJECTIVE: This retrospective case-control study was undertaken to assess the impact of a malleable stylet application on embryo transfer (ET) outcome. METHODS: The Wallace malleable stylet was used when the soft inner catheter could not negotiate the internal os during ultrasound-guided ET. Patients having an age ≤37 years, with three embryos replaced were included in the analysis. Implantation rate, clinical pregnancy rate and live birth rate were the main outcome measures. RESULTS: The Wallace malleable stylet was applied in 164 (29.6%) of the 553 ETs evaluated. Implantation rate, clinical pregnancy rate and live birth rate showed a 5.6% (19.4% vs. 13.8%), a 10.8% (41.9% vs. 31.1%) and a 9.9% (37.3% vs. 27.4%) absolute difference, respectively, in favor of ETs not requiring the stylet. These differences were statistically significant (P < 0.05). CONCLUSIONS: ETs requiring stylet are associated with lower implantation, clinical pregnancy and live birth rates.
Authors: Tali Silberstein; Sherry Weitzen; David Frankfurter; James R Trimarchi; David L Keefe; Shayne M Plosker Journal: Fertil Steril Date: 2004-11 Impact factor: 7.329
Authors: Hans G I van Weering; Roel Schats; Joseph McDonnell; Jacqueline M Vink; Jan P W Vermeiden; Peter G A Hompes Journal: Hum Reprod Date: 2002-03 Impact factor: 6.918