Blood loss during transvaginal oocyte retrieval.

Background/aims: Limited information is available regarding the quantity of blood loss associated with uncomplicated transvaginal oocyte retrieval. The aim of the present study was evaluating the quantity of such a loss.

Methods: One hundred and fifty consecutive women undergoing oocyte retrieval were recruited.

The presence of ovarian endometriomas is associated with a reduced responsiveness to gonadotropins.

Objective: To clarify whether the presence of ovarian endometriomas is associated with a reduced responsiveness to ovarian hyperstimulation.

Design: Observational study.

Setting: University teaching hospital.