The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.
Uterine contractions at the time of embryo transfer alter pregnancy rates after in-vitro fertilization
Abstract
To investigate the possible consequences of uterine contractions (UC) as visualized by ultrasound (US) on in-vitro fertilization (IVF)-embryo transfer outcome, we studied prospectively 209 infertile women undergoing 220 cycles of controlled ovarian stimulation. Inclusion criteria were age < or = 38 years, a morphologically normal uterus, and at least three good quality embryos transferred. Just before embryo transfer, women underwent 5 min digital recordings of the uterus using US image analysis software for UC assessment. Plasma progesterone and oestradiol concentrations were measured. Four groups were defined according to UC frequency: < or = 3.0 (n = 53), 3.1-4.0 (n = 50), 4.1-5.0 (n = 43), and > 5.0 (n = 74) UC/min respectively. Patients, controlled ovarian hyperstimulation and embryology characteristics were comparable in all groups. A stepwise decrease in clinical and ongoing pregnancy rates as well as in implantation rates occurred from the lowest to the highest UC frequency groups (53, 36, 21; 46, 32, 20; 23, 19, 10; and 14, 11, 4%; P < 0.001). Plasma progesterone and UC frequency were negatively correlated (r = -0.34, P < 0.001). Direction of UC did not affect embryo transfer outcome. As this study was controlled strictly for confounding variables and UC were assessed objectively by a computerized system, its results indicate that high frequency UC on the day of embryo transfer hinder IVF-embryo transfer outcome, possibly by expelling embryos out of the uterine cavity. The negative correlation between UC frequency and progesterone concentrations supports the uterine relaxing properties of progesterone.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Lessey, B. A., Damjanovich, L., Coutifaris, C., Castelbaum, A., Albelda, S. M., & Buck, C. A. (1992) · Journal of Clinical Investigation · doi:10.1172/jci115835 · Cited by 638
Kunz, G., Beil, D., Deininger, H., Wildt, L., & Leyendecker, G. (1996) · Human Reproduction · doi:10.1093/humrep/11.3.627 · Cited by 408
Leyendecker, G., Kunz, G., Wildt, L., Beil, D., & Deininger, H. (1996) · Human Reproduction · doi:10.1093/oxfordjournals.humrep.a019435 · Cited by 307
Lyons, E. A., Taylor, P. J., Zheng, X. H., Ballard, G., Levi, C. S., & Kredentser, J. V. (1991) · Fertility and Sterility · doi:10.1016/s0015-0282(16)54246-0 · Cited by 272
Contractions of the inner third of the myometrium
de Vries, K., Lyons, E. A., Ballard, G., Levi, C. S., & Lindsay, D. J. (1990) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(90)90983-e · Cited by 243
Tabibzadeh, S., & Babaknia, A. (1995) · Molecular Human Reproduction · doi:10.1093/molehr/1.4.179 · Cited by 202
Endometrial wavelike movements during the menstrual cycle
Ijland, M. M., Evers, J. L. H., Dunselman, G. A. J., van Katwijk, C., Lo, C. R., & Hoogland, H. J. (1996) · Fertility and Sterility · doi:10.1016/s0015-0282(16)58207-7 · Cited by 181
Hormonal Manipulation of Endometrial Maturation
NAVOT, D., ANDERSON, T. L., DROESCH, K., SCOTT, R. T., KREINER, D., & ROSENWAKS, Z. (1989) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem-68-4-801 · Cited by 177
Knutzen, V. K., Stratton, C. J., Sher, G., McNamee, P. I., Huang, T., & Soto-Albors, C. E. (1992) · Fertility and Sterility · doi:10.1016/s0015-0282(16)54793-1 · Cited by 138
Factors affecting embryo implantation after human in vitro fertilization: A hypothesis
Paulson, R. J., Sauer, M. V., & Løbo, R. A. (1990) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(90)90790-e · Cited by 124
Cited by
Bulletti, C., Coccia, M. E., Battistoni, S., & Borini, A. (2010) · Journal of Assisted Reproduction and Genetics · doi:10.1007/s10815-010-9436-1 · Cited by 758
Mehasseb, M. K., Panchal, R., Taylor, A. H., Brown, L., Bell, S. C., & Habiba, M. (2011) · Fertility and Sterility · doi:10.1016/j.fertnstert.2011.02.051 · Cited by 165
Characteristics of uterine contractility during menses in women with mild to moderate endometriosis
Bulletti, C., De Ziegler, D., Polli, V., Del Ferro, E., Palini, S., & Flamigni, C. (2002) · Fertility and Sterility · doi:10.1016/s0015-0282(02)03087-x · Cited by 147
The Patterns of Uterine Contractility in Normal Menstruating Women: From Physiology to Pathology
BULLETTI, C., DE ZIEGLER, D., SETTI, P. L., CICINELLI, E., POLLI, V., & FLAMIGNI, C. (2004) · Annals of the New York Academy of Sciences · doi:10.1196/annals.1335.007 · Cited by 69
Effect of prostaglandin and antiprostaglandin on midcycle myometrial contractions
Maslow, K. D., & Lyons, E. A. (2004) · Fertility and Sterility · doi:10.1016/j.fertnstert.2004.04.020 · Cited by 12
Metadata
- Authors
- Fanchin, R., Righini, C., Olivennes, F., Taylor, S., de Ziegler, D., & Frydman, R.
- Venue
- Human Reproduction
- Publisher
- Oxford University Press (OUP)
- Published
- 1998-07-01
- Volume
- 13
- Issue
- 7
- Pages
- 1968-1974
- ISSN
- 0268-1161 (ISSN-L)
- 1460-2350
- OpenAlex
- W2122148434
- Cited by
- 527
- References
- 19
- FWCI
- 15.03
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Uterine contractions at the time of embryo transfer alter pregnancy rates after in-vitro fertilization. https://app.cochat.ai/papers/10.1093/humrep/13.7.1968
- The paper
- Fanchin, R., Righini, C., Olivennes, F., Taylor, S., de Ziegler, D., & Frydman, R. (1998). Uterine contractions at the time of embryo transfer alter pregnancy rates after in-vitro fertilization. Human Reproduction. https://doi.org/10.1093/humrep/13.7.1968
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
