Open AccessThe endometrium in assisted reproductive technology: How thin is thin?
Author(s) -
Nalini Mahajan,
Sunita Sharma
Publication year - 2016
Publication title -
journal of human reproductive sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 31
eISSN - 0974-1208
pISSN - 1998-4766
DOI - 10.4103/0974-1208.178632
Subject(s) - endometrium , pregnancy , pregnancy rate , embryo transfer , gynecology , medicine , embryo , obstetrics , andrology , biology , microbiology and biotechnology , genetics
A thin endometrium is encountered infrequently (2.4%) in assisted reproductive technology cycles. When it does occur it is a cause of concern as it is associated with lower implantation rate and pregnancy rate. Though pregnancies have been reported at 4 and 5 mm it is apparent that an endometrial thickness <6 mm is associated with a trend toward lower probability of pregnancy. Hormone replacement therapy - frozen embryo transfer (FET) cycles appear to give better results due to an improvement in endometrial receptivity (ER). The etiology of thin endometrium plays a significant part in its receptivity. A number of treatments have been tried to improve endometrial growth, but none has been validated so far. Confirming ER of a thin endometrium by an ER array test before FET offers reassurance.