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Abstract
Objective: This study compares the effect of starting intravenous oxytocin infusion early before uterine incision versus late after umbilical cord clamping on the blood loss during elective cesarean section (CS).
Methods: A single-blinded randomized clinical trial conducted on 200 pregnant women at term (>37 weeks) gestation scheduled for elective CS were assigned to either IV infusion of 30 IU of oxytocin started before uterine incision (Group I) or started immediately after clamping the umbilical cord (Group II). The primary outcome was the mean volume of blood loss during CS. The secondary outcomes included the mean volume of postoperative blood loss, the mean reduction in the hemoglobin and hematocrit levels, the need for additional uterotonics, blood transfusion and additional surgical procedures.
Results: The baseline characteristics of both groups are quiet similar. No statistical significant difference between both groups as regard to pre- and postpartum hemoglobin levels (p = .06 and 0.24 respectively) and hematocrit values (p = .12 and .51 respectively). There was a significant reduction in the intraoperative blood loss in group I compared with group II (432.7 ± 90.6 versus 588.9 ± 96.3 mL respectively, p = .001). The need for additional uterotonics was more frequent in the group II (19 women) than in group I (seven women) with statistical significance (p = .002). No differences between both groups regarding the need for blood transfusion or additional surgical procedures.
Conclusions: Initiating intravenous oxytocin infusion before uterine incision during elective CS could be associated with reduction in the intraoperative blood loss and the need for additional uterotonics.
Disclosure statement
The authors declare that they have no conflict of interest.