Comparison of Treatment Modalities in Poor Responders Undergoing IVF

The accurate identification and efficient management of poor responders remains one of the most enigmatic challenges in assisted reproductive technology (ART). The investigators study will compare the letrozole/antagonist protocol to the hMG/antagonist protocol in women who poor responders.

Inclusion Criteria:

• Patients will be considered eligible if they are poor ovarian responders according to the Bologna criteria (Ferraretti et al., 2011).

• Two out of three of the following criteria are essential in order to classify a patient as poor ovarian responder:

  • advanced maternal age (≥40 years) or any other risk factor for poor ovarian response;
  • a poor ovarian response (≤3 oocytes with a conventional stimulation protocol); or
  • an abnormal ovarian reserve test (antral follicle count, <7 follicles or anti-Mullerian hormone, <1.1 ng/ml).