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Velocity of endometrial wavelike activity in spontaneous cycles
M M IJland1, J L Evers, H J Hoogland
1Department of Obstetrics and Gynecology, Academisch Ziekenhuis Maastricht, The Netherlands.
Objective:
To analyze the velocity and wave intervals of endometrial wavelike activity in spontaneous menstrual cycles.
Design:
Prospective observational ultrasound (US) evaluation of endometrial wavelike activity.
Setting:
University hospital.
Main Outcome Measure(S):
Endometrial wavelike activity, wave velocity, wave intervals.
Patient(S):
Twenty-three menstrual cycles were evaluated by frequent US investigations in 16 healthy, regularly cycling female volunteers.
Intervention(S):
Transvaginal US examination of endometrial wavelike activity.
Result(S):
Nineteen cycles proved to be ovulatory. Wave velocity and wave intervals were calculated in waves from fundus to cervix and in waves from cervix to fundus. The velocity of waves from fundus to cervix increased from the midfollicular phase to the late follicular phase. Waves from cervix to fundus showed their highest velocity in the periovulatory period.
Conclusion(S):
Velocity of endometrial wavelike activity reached a peak in the periovulatory phase, whereas the wave intervals were shortest in that phase.