 This works within a few days in 95% of cases.Vacuum aspiration or sharp curettage can be used, though vacuum aspiration is lower-risk and more common.In delayed or incomplete miscarriage, treatment depends on the amount of tissue remaining in the uterus.Treatment can include surgical removal of the tissue with vacuum aspiration or misoprostol.Studies looking at the methods of anaesthesia for surgical management of incomplete miscarriage have not shown that any adaptation from normal practice is beneficial.