Abstract

RISQUEZ, Francisco et al. La migración de la burbuja de aire postransferencia embrionaria es un evento al azar. Rev Obstet Ginecol Venez [online]. 2007, vol.67, n.3, pp.179-186. ISSN 0048-7732.

Objective: To demonstrate that air bubble migration is a random event after embryo transfer regardless of the position of patient. Methods: Multicenter prospective study. Sixty nine embryo transfers were performed under ultrasound guidance. Transfer catheter was loaded with one or two air bubbles and medium containing embryos, either Wallace catheter or Frydman catheter were used, ultrasound tracking of air bubble was performed to verify movement and configuration inmediately, 20-25 minutes in horizontal position and 90 minutes on standing position after embryo transfer. Setting: Centro Medico Docente La Trinidad, Caracas. Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA. Results: Movement was observed in 50 (72,46 %) of the patients. Movement was not observed related to gravity while standing up. Conclusion: Air bubbles move and split frequently after embryo transfer with the patient in the horizontal position and on standing, suggestive of active uterine contractions. Gravity related bubble motion was uncommon, suggesting that horizontal rest post embryo transfer may be unnecessary

Keywords : Embryo transfer; Bubble migration; Uterine cavity; Embryos; Transfer catheter.