Techniques for Delivering the After-Coming Head
For vaginal breech delivery with an after-coming head, use controlled flexion techniques or the Mauriceau-Smellie-Veit maneuver as the primary approach, with forceps application (Piper forceps) as a backup when standard maneuvers fail.
However, I must clarify an important distinction: The evidence provided primarily addresses impacted fetal head during cesarean delivery, not vaginal breech delivery techniques. Let me address both scenarios:
For Vaginal Breech Delivery (After-Coming Head)
Primary Technique: Controlled Flexion
- Mauriceau-Smellie-Veit maneuver: Place the infant astride your forearm with fingers on the maxilla (not in the mouth to avoid jaw injury). Apply suprapubic pressure with your other hand or have an assistant do so while maintaining flexion of the fetal head 1.
- The key principle is maintaining flexion to present the smallest diameter (suboccipito-bregmatic) through the birth canal 2.
Backup Options
- Piper forceps: Apply when the body has delivered but the head remains trapped, particularly useful for mentum anterior entrapment 3.
- Avoid excessive extension: Extension increases the presenting diameter and worsens entrapment 2.
Critical Pitfall
Mentum anterior rotation with head entrapment is life-threatening. If standard rotation and flexion maneuvers fail both vaginally and with suprapubic pressure, emergency laparotomy with hysterotomy may be required to rotate and flex the head for vaginal completion 3. For non-viable fetuses, craniotomy avoids unnecessary cesarean morbidity 4.
For Impacted Fetal Head During Cesarean Delivery
Based on the most recent 2024 guidelines 5, when encountering an impacted fetal head during cesarean:
Recommended Technique Hierarchy
1. First-line: Reverse breech extraction ("pull" method)
- A 2022 systematic review demonstrates this is safer for women than vaginal push methods 5.
- Technique: Insert hand into upper uterus, grasp both feet, deliver feet-first. Once shoulders deliver, lift the head out of pelvis 5.
- Evidence: Associated with reduced uterine incision extensions, decreased need for blood transfusion, and lower infection rates compared to vaginal push 5.
- Neonatal outcomes: Recent evidence shows improved Apgar scores and reduced NICU admissions 5.
2. Alternative: Patwardhan method
- Modification of reverse breech extraction where arms are delivered first 5.
- Requires specialized training and is less commonly practiced outside India 5.
3. Adjunctive measures:
- Tocolysis: Administer to relax the uterus and facilitate any disimpaction technique 5.
- Manual vaginal disimpaction: Assistant introduces cupped hand vaginally to elevate head, with woman's legs in semi-lithotomy position 5. However, this "push" method carries higher risk of uterine extensions and maternal complications 5.
Critical Warnings
Avoid these common errors:
- Digital pressure with 1-2 fingers only: Ineffective and may cause fetal skull fracture 5.
- Elevating head upward without first disimpacting caudal-cranially: Compounds lower segment trauma 5.
- Simultaneous abdominal pressure during vaginal push: Increases risk of uterine angle tears, lateral extensions (injuring uterine vessels), and inferior extensions (damaging cervical arteries) 5.
Fetal Pillow Device
Evidence is mixed and insufficient for routine recommendation 5:
- Some RCTs show reduced uterine extensions (OR 0.50) 5.
- Larger observational studies show no maternal outcome improvement 5.
- Studies inadequately powered for neonatal outcomes and don't account for device insertion time 5.
- Not recommended until adequately powered cost-effectiveness RCTs are completed 5.
For Cesarean with Unengaged Head (Elective)
Recent 2026 data suggests single-blade forceps significantly shortens delivery time and reduces neonatal asphyxia and birth injury compared to manual delivery or double-blade forceps 6. Surgeon experience matters more than technique choice for bilirubin levels and phototherapy requirements 7.