This research looked at patients undergoing emergency cesarean deliveries or procedures for placenta accreta spectrum. The team compared those who received general anesthesia against those who had neuraxial anesthesia. They found that the group with general anesthesia experienced a significantly higher rate of severe postpartum hemorrhage. Specifically, 21.3% of patients under general anesthesia had severe bleeding, compared to 9.8% in the neuraxial group. This risk remained even after accounting for how long the surgery took and whether tranexamic acid was used. The study suggests that general anesthesia was independently associated with an almost threefold increased risk of severe bleeding.
The researchers also examined outcomes for patients with placenta accreta spectrum. In this specific group, the difference in severe bleeding rates between the two anesthesia types was not statistically significant. However, the number of patients in this subgroup was small, so these results should be viewed as exploratory rather than definitive. The study did not report specific safety concerns or adverse events related to the anesthesia choices themselves.
Because severe bleeding can lead to serious health complications, this evidence supports tailoring anesthesia plans based on the expected cause of hemorrhage. While the main findings are strong, the data for placenta accreta spectrum cases needs more investigation. Readers should understand that general anesthesia is linked to higher bleeding risk in emergency settings, but more research is needed to confirm this for all complex cases.