Endometrial wavelike movements during the menstrual cycle

IJland, Marga M.; Evers, Johannes L.H.; Dunselman, G.A.J.; Katwijk, Cornelis van; Lo, Cornelia R.; Hoogland, H.J.

doi:10.1016/s0015-0282(16)58207-7

Cited by 145 publications

(99 citation statements)

References 6 publications

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“…In postmenopausal women, the wash-in is weaker and followed by a steady and slow rising results reveal an increase in tissue blood flow (F) and blood volume fraction (V b ) and a shortening of lag time (Dt) in the inner myometrium, especially during the mid-late proliferative phase, just before ovulation. This phenomenon recalls the chronology of estradiol serum levels and the decrease in microvascular resistance associated with the well-defined transient increase in myometrial basal tone and uterine contractility [43][44][45]. Some authors have suggested that this increase in contractility of the inner myometrium before ovulation is involved in sperm migration [45,46].…”

Section: Discussionmentioning

confidence: 60%

Dynamic contrast-enhanced MR imaging to assess physiologic variations of myometrial perfusion

et al. 2009

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Section: Discussionmentioning

confidence: 60%

Dynamic contrast-enhanced MR imaging to assess physiologic variations of myometrial perfusion

et al. 2009

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“…Uterine peristalsis represents an inherent contractility that is speculated to have a role in sperm transport and the preservation of early pregnancy [5][6][7]. The direction and frequency of the waves are known to be closely related with changes of the menstrual cycle.…”

Section: Discussionmentioning

confidence: 99%

“…Transvaginal ultrasound (TVUS) was previously the only modality used to evaluate peristalsis, which was recognizable as subtle contractions of the inner myometrium with striping movements of the endometrium [5][6][7][8]. However, recent advances in magnetic resonance (MR) imaging techniques have enabled the direct, clear visualization of this inherent contractility of the uterus with cine mode display of MR images [9,10].…”

Section: Introductionmentioning

confidence: 99%

Cine MR imaging of uterine peristalsis in patients with endometriosis

Kido

Togashi

Nishino³

et al. 2006

Eur Radiol

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Endometriosis is one of the most important causes of infertility; however the precise mechanism by which it affects female fertility is unclear. The objective of this study was to study the functional aspects of the uterus by evaluating uterine contractility in patients with endometrial cysts of the ovary. The study population was recruited from two institutes and consisted of 26 women (periovulatory (10), luteal (13), and menstrual phase (3); age range: 19-51 years) with untreated endometriosis; the control group consisted of 12 healthy women (age range: 22-41 years). Cine MR imaging obtained by a 1.5T magnet was visually evaluated at 12x faster than real speed, focusing on the presence of uterine peristalsis, the direction and frequency of peristalsis, and the presence of sustained uterine contractions. Uterine peristalsis was identifiable in 3/10, 3/13, and 3/3 of the endometriosis patients in each menstrual cycle, respectively, and in 11/12, 3/12, and 5/12 of their control subjects. Peristaltic detection rate and frequency were significantly less for the endometriosis group than for the controls in the periovulatory phase only (p<0.05). Sustained contractions were recognized in 19/36 control subjects and in 13/26 endometriosis patients, but the difference was not significant. Uterine peristalsis appears to be suppressed during the periovulatory phase in patients with endometriosis, which may have an adverse effect on sperm transport.

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“…It has been postulated that "endometrial movements" are present during the natural menstrual cycle (22,23) and that they may impact fecundity (24). Thus, it is not a far stretch to imagine that uterine contractility and subsequent endometrial movements could impact ET.…”

Section: Discussionmentioning

confidence: 99%

Embryo afterloading: A refinement in embryo transfer technique that may increase clinical pregnancy

Neithardt

Segars

Hennessy

et al. 2005

Fertility and Sterility

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Objective-Given the importance of ET technique during assisted reproductive technology cycles, we evaluated the effect of embryo afterloading subsequent to placement of the ET catheter on pregnancy rates vs. a standard direct ET. Design-Retrospective cohort analysis. Setting-University-based assisted reproductive technology program.Patient(s)-Patients undergoing a fresh nondonor day 3 ET by a single provider over a 1-year period. Intervention(s)-None. Main Outcome Measure(s)-Clinical pregnancy.Result(s)-One hundred twenty-seven patients met inclusion criteria, and the overall pregnancy rate was 46.5%. There was no difference between the two groups with respect to age, basal FSH, or number of embryos transferred. The ET method used was at the discretion of the provider. There was no difference between the two groups in the presence of blood on the transfer catheter. However, there were significantly more transfer catheters with mucus contamination in the direct transfer group (25.58% vs. 5.95%). The clinical pregnancy rate in the group with ET using the afterloading technique was higher than in the direct ET group (52.4% vs. 34.9%). Conclusion(s)-There was a trend toward an increase in pregnancy rate when an embryo afterloading technique was used. A prospective randomized trial is needed to examine this issue. Technology reported an increase in live birth rates from 28% in 1996 to 32% in 2002 (1). This increase has been attributed to multiple factors including improved stimulation protocols (2-4), advances in embryology laboratory techniques (5), and improvement in ET techniques (6, 7). KeywordsEmbryo transfer is universally accepted as a crucial last step in any ART cycle. The importance of this step has been emphasized by the fact that different providers at the same institution may have disparate pregnancy rates after ET (8,9). Other variables affecting pregnancy include the ease of ET (7, 10, 11), presence or absence of blood on the transfer catheter (12), type of catheter used (13), technique used to perform the transfer (14-16), and experience of the physician (17).In the early 1990s, studies were first published on the use of a mock or "dummy" ET before the start of an IVF cycle (11,18). A mock ET allows the physician to choose the appropriate transfer catheter, measure the depth of the endometrial cavity, and anticipate potential problems at ET. However, a mock transfer remote from the actual ET is done under different circumstances and may not be reflective of actual conditions encountered on the day of ET. Sharif et al. (19) proposed to circumvent this problem by performing a mock ET immediately before the actual ET.To avoid additional trauma by the passage of two separate catheters, we began transferring embryos by an afterload technique, in which an empty catheter is placed at, or just past, the internal cervical os. The inner sheath is withdrawn, and a second inner sheath containing the embryos is passed. This gives the provider the benefit of an immediate mock transfer while minimizing mani...

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Endometrial wavelike movements during the menstrual cycle

Cited by 145 publications

References 6 publications

Dynamic contrast-enhanced MR imaging to assess physiologic variations of myometrial perfusion

Dynamic contrast-enhanced MR imaging to assess physiologic variations of myometrial perfusion

Cine MR imaging of uterine peristalsis in patients with endometriosis

Embryo afterloading: A refinement in embryo transfer technique that may increase clinical pregnancy

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