Frozen-Thawed Embryo Transfer Success Rate is Affected by Age and Ovarian Response at Oocyte Aspiration Regardless of Blastomere Survival Rate.

Objective: To identify the factors influencing the success of frozen-thawed embryo transfers, whether originating directly from current cycles or from their matching fresh cycles.

Methods: Analysis of 273 frozen-thawed embryo transfer cycles and their matching fresh embryo transfer cycles, with respect to maternal, embryological and clinical factors, comparing successful to unsuccessful cycles.

Results: The cumulative clinical pregnancy and live birth rates following fresh ET and corresponding FETs were 50.

Reproductive outcome of fresh or frozen-thawed embryo transfer is similar in high-risk patients for ovarian hyperstimulation syndrome using GnRH agonist for final oocyte maturation and intensive luteal support.

Background: Triggering ovulation by GnRH agonist (GnRHa) in GnRH antagonist IVF protocols coupled with adequate luteal phase support has recently been suggested as a means to prevent ovarian hyperstimulation syndrome (OHSS). Our objective was to examine the outcome of fresh embryo transfer (f-ET) after triggering ovulation by GnRHa and providing intensive luteal phase supplementation, compared with that of the next first frozen-thawed embryo transfer (ft-ET) after cycles with the same protocol and cryopreservation of all the embryos.

Methods: We performed a cohort study at a university-based IVF clinic.

Monozygotic multiple gestation after intracytoplasmic sperm injection and preimplantation genetic diagnosis.

Objective: To report a possible association between intracytoplasmic sperm injection (ICSI)-preimplantation genetic diagnosis (PGD) and monozygotic multiple gestation.

Design: Small case series.

Setting: In vitro fertilization unit in an academic medical center.

The value of repeat testicular sperm retrieval in azoospermic men.

To determine the predictive value of a previous testicular biopsy to the chance of sperm retrieval in the next testicular sperm extraction (TESE) procedure, we retrospectively analyzed the outcome of past sperm collection procedures and histopathology diagnoses of patients with nonobstructive azoospermia. Repeated TESE ensured a high recovery rate (96%) when the first recovery procedure had been successful and when hypospermatogenesis was diagnosed (77%); when no spermatozoa were found on the first attempt, a repeat TESE procedure was successful in one-third of the patients.

Technical modification of testicular sperm extraction expedites testicular sperm retrieval.

Objective: To determine the predictive value and the quality of supernatant sperm (SS) achieved by a simple laboratory technical modification after testicular sperm extraction (TESE).

Design: A retrospective analysis.

Setting: An IVF unit in a university medical center.