Complex endometrial wave-patterns in IVF.
OBJECTIVE
To reanalyze ultrasound images from IVF cycles with the aim of developing a refined endometrial wave classification system, which will allow description as well of the more complex endometrial wave patterns.


METHODS
Descriptive study.


METHODS
University hospital-based fertility clinic.


METHODS
Twenty-four patients undergoing IVF.


METHODS
Ultrasound examination was performed on the day of hCG administration.


METHODS
Endometrial wave type and intraobserver and interobserver agreement.


RESULTS
Two new wave types were added to the endometrial wave types that were described in the existing wave classification system: recoiling CF waves and a standing wave. Furthermore, an alternation between CF waves and FC waves in the same fragment was described. Calculation of interobserver and intraobserver agreement resulted in a kappa value reflecting strong agreement.


CONCLUSIONS
The refined endometrial wave classification system makes it possible to describe the more complex wave types that can be detected in IVF cycles on the day of hCG administration.
van Gestel
Iris
I
Department of Obstetrics and Gynaecology, Research Institute Grow, Academisch ziekenhuis Maastricht and Maastricht University, Maastricht, The Netherlands. irisvangestel@wanadoo.nl <irisvangestel@wanadoo.nl>
IJland
Marga M
MM
Evers
Johannes L H
JL
Hoogland
Henk J
HJ
D002584:Cervix Uteri / Q000187:drug effects / Q000503:physiopathology; D006063:Chorionic Gonadotropin / Q000627:therapeutic use; D004717:Endometrium / Q000000981:diagnostic imaging* / Q000187:drug effects / Q000503:physiopathology; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D015588:Observer Variation; D014463:Ultrasonography
D006063:Chorionic Gonadotropin