Does gestational sac volume predict the outcome of missed miscarriage managed expectantly?
PURPOSE: The aim of this study was to investigate whether gestational sac volume (GSV) can predict the outcome of missed miscarriages that are managed expectantly. METHODS: This was a prospective observational study. Between February 1, 2000, and January 31, 2001, all patients with a confirmed first-trimester missed miscarriage who chose to undergo expectant management were recruited to participate. A single investigator performed all sonographic examinations and measurements. The main outcome measure was a complete spontaneous abortion within 4 weeks of the initial diagnosis. A complete miscarriage was defined as a maximum anteroposterior diameter of the endometrium of less than 15 mm on transvaginal sonography and no persistent heavy vaginal bleeding. The patients could opt to undergo surgery at any time, but those who had not expelled the products of conception within 4 weeks of the diagnosis were advised to have surgical uterine evacuation. RESULTS: In total, 90 patients were enrol
