Extra-abdominal removal of placenta during cesarean section: a prospective randomized controlled trial of a novel...

To evaluate intraoperative and early postoperative outcomes of a novel placenta delivery technique; extra-abdominal removal vs. intra-abdominal removal of the placenta during cesarean section (CS).

A total of 210 women delivering by CS at term in a tertiary university hospital between March 2014 and January 2015 were randomized to extra-abdominal removal vs. intra-abdominal removal of the placenta. The women were randomly allocated to the extra- (group 1) or intra-abdominal removal group (group 2) according to random sampling method, where women with even and odd numbers were allocated to intra- and extra-abdominal groups, respectively. The amount of intra-abdominal hemorrhagic fluid accumulation, the duration of operation and estimated blood loss during operation were the primary outcomes. The secondary outcomes included the mean difference between pre- and post-operative hemoglobin and hematocrit levels, the mean postoperative pain score, any additional need of analgesia, postoperative bowel function, postoperative endometritis and wound infections.

The amount of aspirated hemorrhagic fluid was significantly higher in the intra-abdominal group compared to the extra-abdominal group (34.6±22.2 mL vs. 9.4±4.8 mL, P<0.001). Mean duration of the operation, intraoperative blood loss, postoperative requirement of additional analgesia, postoperative pain scores, postoperative endometritis or wound infection, and length of hospital stay were not significantly different between the intra- and extra-abdominal placental removal groups.

By extra-abdominal removal of the placenta, the accumulation of bloody fluid in the abdominal cavity is significantly less compared to the intra-abdominal removal method, which, in turn, provides avoidance of excessive mounted-gauze use, intra-abdominal manipulations, or iatrogenic trauma.