Oocyte quality and IVF outcome after coasting to prevent XXXX .

@entity1 @entity43 @entity53
OBJECTIVE: To evaluate, in a large cohort of @entity1 , oocyte quality and IVF outcome after coasting used to prevent @entity43 . SETTING: Retrospective study. @entity1 : IVF cycles which had reached @entity53 serum levels of at least 4,000 pg/mL without being coasted (control group, n = 208), or where coasting was applied (coasted group, n = 157). METHOD: IVF data of coasted cycles were compared with the control group. Within the group of coasted cycles, we also analyzed whether indirect parameters related to coasting had an effect on IVF results. RESULTS: Coasted @entity1 showed higher maximum @entity53 levels and greater numbers of large follicles than the control group, but lower oocyte recovery rates. There were no other significant differences between the two groups of @entity1 . Within the group of coasted @entity1 , no significant relation was found between the number of days of coasting, the @entity53 level on the day of hCG, or the fall in @entity53 and the outcome, whether measured in terms of oocyte quality, pregnancy rate, or incidence of @entity43 . CONCLUSION: Coasting seems to be associated with a reduced oocyte collection rate, especially when the coasting period is prolonged. However, this does not result in reduced oocyte quality. The length of the coasting period and degree of @entity53 decrease do not seem to alter the results in terms of pregnancy rates.
