Intracytoplasmic sperm injection: position of the polar body affects pregnancy rate

Intracytoplasmic sperm injection: position of the polar body affects pregnancy rate.

A prospective study on intracytoplasmic sperm injection (ICSI) was performed to evaluate the effect of the position of the polar body relative to the opening of the injection needle during sperm injection, and of the person who performs the injections on fertilization, cleavage, and pregnancy rates. This study included 173 couples undergoing 313 ICSI cycles from September 1995 to December 1997....

Cytogenetic analysis of human zygotes displaying three pronuclei and one polar body after intracytoplasmic sperm injection.

BACKGROUND Digynic zygotes with three pronuclei and one polar body obtained after intracytoplasmic sperm injection (ICSI) were studied cytogenetically to elucidate the frequency and origin of chromosomal abnormalities at the earliest stage of conception. METHODS Uncleaved, single-cell zygotes were incubated with podophyllotoxin and vinblastine and fixed by a gradual fixation air drying method...

The Effects of Maternal and Paternal Body Mass Index on Live Birth Rate after Intracytoplasmic Sperm Injection Cycles

Objective The present study was designed to evaluate the effect of couple`s obesity simultaneously on in-vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) outcomes. MaterialsAndMethods This cross-sectional study was performed in Royan institute between January 2013 and January 2014. The recorded data of all patients during this time period were evaluated. The study population was ...

Endometriosis Affects Oocyte Morphology in Intracytoplasmic Sperm Injection Cycles?

OBJECTIVE To identify associations between presence of endometriosis and oocyte defects, embryo developmental potential, and cycle outcomes. METHODS This study looked into the impact of endometriosis on oocyte and embryo quality, and blastocyst formation probability. Endometriosis was also correlated with cycle characteristics. In order to avoid age-related bias, in the first analysis only pa...

Intracytoplasmic sperm injection (ICSI).