Local Infiltration Anesthesia Speeds Up Emergency C-Section Delivery but Does Not Improve Maternal or Neonatal Outcomes: Study

When every minute counts in a category I cesarean section, does shaving off decision-to-delivery time actually impact maternal or neonatal outcomes? A new study in BMC Pregnancy and Childbirth offers surprising answers for clinicians facing extreme emergencies.

Study Design: Comparing Rescue and Standard Anesthesia for Emergency C-Section

Researchers conducted a retrospective cohort study of 88 women who underwent category I cesarean delivery (immediate threat to mother or fetus) between 2021 and 2025. Patients were divided into:

Local Anesthesia (LA) Group: Surgery started in the delivery room with local infiltration anesthesia, followed by non-intubated general anesthesia after delivery.

General Anesthesia (GA) Group: Traditional tracheal intubation general anesthesia performed in the operating room.

The primary outcome was the decision-to-delivery interval (DDI). Secondary outcomes included operative time, estimated blood loss, incision type, and key maternal and neonatal measures.

Key Findings: Shorter DDI, But No Outcome Advantage

DDI was dramatically shorter in the LA group (median 9 vs. 26 minutes).

No difference in neonatal or maternal outcomes: There were no significant differences in 1-minute Apgar scores, rates of postoperative fever, gestational age at delivery, or birth weights between groups.

Operative time and blood loss: The LA group had longer procedures and more blood loss, likely due to more frequent use of vertical incisions—often chosen for speed in emergent settings.

Multivariate analysis: After adjusting for confounders, anesthesia technique predicted DDI but not outcomes like Apgar scores or blood loss.

So What? Implications for Emergency Cesarean Practice

While it may be tempting to prioritize speed above all else in dire situations, this research suggests extremely short DDI alone does not guarantee better outcomes. The findings highlight that:

Clinical context and surgical setting matter: Delivery room procedures often involve suboptimal environments and more invasive incisions.

Risks of rescue anesthesia: Local infiltration followed by non-intubated general anesthesia carries serious risks (aspiration, airway compromise) and should be reserved for only the most extreme emergencies.

Standard of care: Whenever possible, standard operating room protocols with intubated general anesthesia remain safest and most appropriate.

Limitations and Cautions

This was a single-center, retrospective study with a small sample in the rescue anesthesia group. The results should be considered hypothesis-generating, not definitive evidence for changing practice.

Conclusion: Speed Has Limits—Safety Still Comes First

Shaving minutes off delivery time in category I cesarean section may be life-saving in rare circumstances, but it does not inherently improve maternal or neonatal outcomes. Maintaining safety protocols and optimizing environments remain paramount, even in emergencies.

Key points

Local infiltration anesthesia in the delivery room can speed up decision-to-delivery interval for category I cesarean section.

This time-saving did not translate into improved maternal or neonatal outcomes.

The LA group saw more blood loss and longer surgeries, likely due to surgical setting and incision choice.

Rescue anesthesia approaches should only be used in extreme, life-threatening scenarios.

Standard anesthesia in the operating room remains the safest practice whenever time permits.

Citation:

Kaisun Zhao, Xiaohe Xuan, Xiachu Wei, Yuechen Tan, Jianchun Huang. Delivery room local infiltration anesthesia with non-intubated general anesthesia for category i cesarean section: shorter decision-to-delivery interval but no improvement in maternal or neonatal outcomes – a retrospective cohort study. BMC Pregnancy and Childbirth. 2026; [In Press]. https://doi.org/10.1186/s12884-026-09986-2