Best site for embryo transfer: the upper or lower half of endometrial cavity?

Human Reproduction
José G FrancoJoão Batista Alcantara Oliveira

Abstract

The objective of the present study was to determine the importance of the site of embryo transfer (upper or lower half endometrial cavity) on implantation and clinical pregnancy rates. A total of 400 transfers guided by ultrasound were randomly assigned to two groups according to the distance between the uterine fundus and the catheter tip at the time of embryo placement. Group I (n = 200) consisted of transfers corresponding to a distance of < 50% of the endometrial cavity length (ECL), i.e. transfer in upper half of the cavity; and group II (n = 200) consisted of transfers corresponding to a distance of > or = 50%, of the ECL, i.e. transfer in lower half of cavity. The Student's t-test, Mann-Whitney test and Fisher's exact test were used where appropriate. The general characteristics of the study population and the main transfer cycle characteristics had an equal distribution (P > 0.05) between groups I and II. No significant difference in implantation or pregnancy rates was observed between groups I and II. The implantation or pregnancy rates were similar whether the embryos were deposited in the upper or lower half of the endometrial cavity.

Citations

Apr 14, 2007·Journal of Assisted Reproduction and Genetics·E ConfinoF Risquez
May 5, 2005·Current Opinion in Obstetrics & Gynecology·Hassan N Sallam
Apr 20, 2014·Archives of Gynecology and Obstetrics·Kyle J ToblerZeev Shoham
Mar 20, 2012·European Journal of Obstetrics, Gynecology, and Reproductive Biology·Peter KovacsSteven G Kaali
Jan 2, 2010·Fertility and Sterility·Bulent TirasHakan Yarali
Mar 3, 2009·International Journal of Gynaecology and Obstetrics : the Official Organ of the International Federation of Gynaecology and Obstetrics·Yingpu SunYihong Guo
Apr 17, 2007·Fertility and Sterility·Marieke J LambersPeter G A Hompes
Apr 24, 2007·Fertility and Sterility·Osnat EytanAriel J Jaffa
Feb 17, 2007·Annals of the New York Academy of Sciences·Osnat EytanAriel J Jaffa
Jun 27, 2006·Journal of Biomechanics·Osnat EytanDavid Elad
Jun 15, 2010·Fertility and Sterility·Cezary GrygorukGrzegorz Mrugacz
Oct 7, 2015·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·S H SaravelosT-C Li
Apr 4, 2017·Fertility and Sterility·UNKNOWN Practice Committee of the American Society for Reproductive Medicine. Electronic address: ASRM@asrm.org, UNKNOWN Practice Committee of the American Society for Reproductive Medicine
Jul 29, 2015·Reproductive Biology and Endocrinology : RB&E·Hwang KwonEun-Kyung Kim
Jul 12, 2005·Human Reproduction·Mousa I ShamonkiZev Rosenwaks
Apr 25, 2009·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Lanlan FangYihong Guo
Sep 4, 2021·Reproductive Biomedicine Online·Aşina BayramHuman M Fatemi

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.