Study flowchart: number of patients (n), follow-up, Doppler assessment and grouping. Group I – complete miscarriage at the 2nd week. Group II – incomplete miscarriage at the 2nd week and complete miscarriage at the 8th week. Group III – incomplete miscarriage at 2nd and 8th week of follow-up, submitted to D&C. D&C, dilation and curettage.