The option of expectant management was offered 221 women with ultrasou
nd diagnosis of missed miscarriage. Eighty-five women (38%) accepted;
the remaining 136 women chose surgical evacuation of retained products
of conception. In the expectant management group 21 women (24.7%) had
a complete miscarriage, 14 (16.5%) had incomplete miscarriage necessi
tating surgery, and 50 (58.8%) requested surgery within 48 days from t
he original diagnosis. These results suggest that the success of expec
tant management of missed miscarriage is too low to justify its use in
routine clinical practice.