Ultrasound can provide objective information in diagnosing incompetency of the internal 0s of the cervix during pregnancy and in evaluating the need for surgical correction. Attention must be paid to the technical aspects of the examination, and the examiner must be familiar with normal variations in the configuration.
The involution of the uterus was studied between 1 and 40 days postpartum utilizing serial ultrasonic scans. All pregnancies and postpartum periods were uncomplicated. The decrease in uterine size was related to a diminution in uterine length. No difference was observed between nullipara and primipara or breast- or bottle-feeding mothers.
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