19 cases with MROP within 24 hours of delivery
All 19 cases were delivered vaginally, with a median (range) of 39.9 (34.7-41.1) weeks of gestation at delivery. The indications for MROP were haemorrhage in nine cases and infection in one case. MROP was performed at the patient’s request without any urgent symptoms in the remaining nine cases. Fifteen of the 19 cases experienced heavy bleeding (Figure 1A). Nine of the 15 patients had heavy bleeding before MROP (Cases 1-9), and all required blood transfusion. Six of the nine cases who underwent MROP without bleeding experienced heavy bleeding during the procedure (cases 10-15), five of them required blood transfusion.
One of the nine cases with heavy bleeding before MROP and four asymptomatic patients had RPOC after MROP. Two cases (Cases 11 and 12) experienced heavy bleeding again, and one case (Case 12) had infection. RPOC spontaneously resolved in all cases within a median of 82 days. Only one of the 14 cases in which the retained placenta was completely removed by MROP had heavy bleeding the day after MROP underwent UAE (Case 14). The remaining 13 cases had neither bleeding nor infection.