hourglass uterus

hourglass uterus

Etymology: Gk, hora + AS, glaes
a uterus in which a segment of circular muscle fibers contracts during labor, causing constriction ring dystocia. The condition is marked by lack of progress despite adequate labor contractions and recession rather than descent of the presenting part during a contraction.
References in periodicals archive ?
Fig 4 & 5) 3-D TV ultrasound examination revealed an hourglass uterus with distended cervix with a fetal node and shape was characteristically once again crater shaped, which is due to hyperechoic trophoblastic invasion (Fig.