What are the current guidelines for the management of cesarean delivery, including prophylactic antibiotic administration, uterotonic regimen, incision type, and suturing technique for each abdominal layer?

Current Guidelines on Management of Caesarean Delivery

Preoperative Antibiotic Prophylaxis

Administer broad-spectrum antibiotic prophylaxis (cefazolin 2g IV, or 3g if BMI >40 kg/m²) within 60 minutes before skin incision, not after cord clamping. 1 This timing significantly reduces surgical site infections and endometritis compared to post-cord clamping administration.

Antibiotic Regimen Specifics:

• Standard prophylaxis: Single-dose cefazolin (2g IV) is equivalent or superior to multidose regimens 1
• Unscheduled cesarean deliveries: Add azithromycin to standard prophylaxis to reduce postpartum infections 1
• Scheduled cesarean in non-obese patients: Azithromycin may be considered but requires further research 1
• Patients with obesity: Consider extended prophylaxis with 48 hours of postoperative oral cephalexin plus metronidazole in addition to standard preoperative IV cephalosporin 1

Skin and Vaginal Preparation

Use chlorhexidine-alcohol solution for abdominal skin preparation as it demonstrates superiority over aqueous iodine in reducing surgical site infections 1. For vaginal preparation during intrapartum cesarean delivery, use aqueous iodine or 4% chlorhexidine gluconate (without alcohol) to reduce endometritis and puerperal fever 1.

• Do not shave; use clippers if hair removal is necessary 2
• Preoperative chlorhexidine cloth wipes show no additional benefit 1

Incision Type and Technique

Perform a low transverse skin incision using either the Joel-Cohen or Pfannenstiel method 3. Both techniques are acceptable with similar outcomes. For patients with BMI >35 kg/m², either Cohen (including supraumbilical) or Pfannenstiel (infraumbilical or infrapannus) approaches are acceptable, though Cohen has been associated with lower Apgar scores 3.

Surgical Technique Details:

• Subcutaneous tissue: Use diathermy rather than sharp dissection 3
• Fascial incision: Make initial incision sharply; extension can be sharp or blunt 3
• Peritoneal entry: Use blunt entry and extension 3
• Bladder flap: Omit routine bladder flap creation 3, 4
• Uterine incision: Low transverse hysterotomy with blunt cephalad-caudad expansion 3, 4

Uterotonic Regimen

In areas where available, use carbetocin after cord clamping as it is more effective than oxytocin alone in preventing postpartum hemorrhage 3. Where carbetocin is unavailable, administer oxytocin plus either misoprostol or methylergonovine 3.

• Administer uterotonics after cord clamping
• Insufficient evidence supports routine uterine massage for hemorrhage prevention 3

Placental Delivery

Allow spontaneous placental removal with gentle cord traction rather than manual extraction 3, 4. Manual removal increases the risk of endometritis. Omit routine sponge curettage as it does not decrease retained products of conception 5.

Cord Clamping

Delay cord clamping for at least 30 seconds and up to 120 seconds (particularly recommended for preterm deliveries) 3.

Uterine Closure

Close the uterine incision in two layers rather than one layer to significantly reduce the risk of uterine scar dehiscence in subsequent pregnancies 6. Use full-thickness bites including the endometrium 5. Either intra-abdominal or extra-abdominal uterine repair is acceptable, though intra-abdominal repair may reduce postoperative pain and nausea/vomiting 5.

Closure Technique:

• Double-layer closure provides better residual myometrial thickness 5
• Insufficient evidence exists to recommend specific suture type (continuous vs. interrupted, locking vs. non-locking) 5, 4

Abdominal Wall Closure

Change gloves after placental delivery and before abdominal wall closure 5.

Layer-by-Layer Approach:

Peritoneum: Do not close visceral or parietal peritoneum 5, 4. Peritoneal closure is not recommended as it provides no benefit.

Fascia:

• Close with bites at least 5×5 mm 5
• Use monofilament suture for vertical incisions 5
• Do not reapproximate rectus muscles 5

Subcutaneous Layer:

• Close subcutaneous tissue when depth is ≥2 cm 5, 6. This significantly reduces seroma, hematoma, and wound disruption in patients with subcutaneous tissue >2 cm thickness 6
• May consider closure in all patients regardless of depth 5
• Subcutaneous irrigation with saline may be performed 5
• Do not use routine subcutaneous drains 5

Skin:

• Use monofilament absorbable suture (such as poliglecaprone) for subcuticular closure 5
• No level 1 evidence supports additional skin adhesive or sterile strips after suture closure 5

Wound Dressing and Management

If using a dressing, consider:

• Dialkylcarbamoyl chloride-impregnated dressing if available, or standard gauze dressing 5
• Prophylactic negative pressure wound therapy for patients with obesity 5

Additional Intraoperative Considerations

• Do not perform routine intra-abdominal irrigation 5
• Do not use adhesion prevention barriers 5
• Do not perform routine uterine irrigation or mechanical cervical dilation 5
• Consider wound infiltration with local anesthesia (supra- or subfascial) for postoperative pain control 5

Antiemetic Administration

Administer an antiemetic after cord clamping in women having planned cesarean under locoregional anesthesia to reduce intraoperative and postoperative nausea and vomiting 4.

Common Pitfalls to Avoid

• Administering antibiotics after cord clamping instead of pre-incision
• Using razors instead of clippers for hair removal
• Performing manual placental extraction routinely
• Single-layer uterine closure
• Closing peritoneum unnecessarily
• Failing to close subcutaneous tissue ≥2 cm depth
• Not providing extended antibiotic prophylaxis in obese patients

These recommendations are based on the most recent Enhanced Recovery After Surgery (ERAS) Society guidelines from 2025-2026 2, 1 and contemporary evidence-based reviews 5, 3, representing the current standard of care for cesarean delivery management.