Résumé
The use of halogenated agents during balanced general anesthesia may result in an increase in blood loss associated with cesarean section but in some studies this result rejected. The aim of this study was. Comparison of hemoglobin concentration, after cesarean section between two methods: general anesthesia and spinal anesthesia. This clinical trial study comprised 170 pregnant women, who were elective cesarean section candidates for the second time. This study was approved by the local committee of medical ethics. Patients were randomly divided into two groups, each with 85 members. Exclusion criteria were: cardiac diseases, coagulate disorders, anemia, preeclampsia, abruptio placenta, emergent cesarean section cases, atonia [polyhydramnius ....], birth weight more than 4kg, and long duration of the operation [more than 90']. Patients of the first group underwent general anesthesia and spinal anesthesia was applied for the second group. There was no significant difference between both groups regarding the mean age, operation, and anesthesia durations [p>0.05]. The mean hemoglobin [HP] and hematocrit [Hct] levels were significantly lower in both groups post operatively compared with the same values pre operatively [p<0.05]. Post operative, Hb.Hct reduction rate [preoperative Hb.Hct minus post operative Hct] was significantly higher in general anesthesia group [p<0.05]. If duration of operation time was longer than one hour, Hct significantly decreased. Results of the present study showed that postoperative Hct reduction rate in cesaeran section was higher in patients who received general anesthesia in comparison with spinal anesthesia