Management of Second Twin in Transverse Lie
For a second twin in transverse lie after vaginal delivery of the first twin, perform internal podalic version with breech extraction as the primary approach, ideally with intact membranes and under continuous ultrasound guidance.
Recommended Technique: Internal Podalic Version with Breech Extraction
Primary Approach
- Internal podalic version with unruptured membranes is the preferred technique when feasible, as it has been shown to result in successful delivery with good neonatal outcomes and no birth injuries 1
- Perform the procedure under continuous real-time ultrasound guidance to visualize fetal anatomy and guide hand placement during the version 2
- This should be done without delay once the decision is made, as cervical retraction can occur rapidly after delivery of the first twin 3, 4
Technical Execution
- Insert your hand into the uterine cavity while maintaining membrane integrity when possible 1
- Grasp one or both feet of the transverse twin under ultrasound visualization 2
- Apply gentle, steady traction to bring the feet through the cervix
- Complete delivery via breech extraction once the feet are delivered 5
Critical Timing Considerations
- Act promptly - the window for successful vaginal delivery narrows quickly as the cervix begins to retract after first twin delivery 3, 4
- The procedure must be performed by an experienced obstetrician in a fully equipped facility with immediate access to cesarean delivery and neonatal intensive care 3, 5
When Cesarean Section Becomes Necessary
Primary Indications
- Inability to perform internal podalic version (accounts for 52% of cesarean sections for second twins in transverse lie) 4
- Cord prolapse (26% of cesarean indications, particularly if version cannot be accomplished quickly) 4
- Significant cervical retraction preventing safe manipulation 3
- Fetal distress during attempted version 4
- Placental abruption 4
High-Risk Scenarios
- Transverse lie with back down position is particularly difficult to convert and has higher cesarean rates 4
- When twin A was delivered by cesarean section, twin B should also be delivered abdominally 3
Common Pitfalls to Avoid
- Delaying the decision to act - waiting allows cervical retraction and increases the need for emergency cesarean section 3, 4
- Rupturing membranes prematurely - intact membranes provide better control during version and may improve outcomes 1
- Attempting version without ultrasound guidance - real-time imaging significantly aids the procedure 2
- Inadequate preparation - this delivery must occur in a facility with full surgical and neonatal intensive care capabilities 3
Outcomes Data
- Internal podalic version with breech extraction has demonstrated reliable effectiveness with acceptable mortality and morbidity when performed under proper conditions 5
- Emergency cesarean section for second twin occurs in approximately 2.2-3.4% of all twin deliveries 3
- The two neonatal deaths reported in the literature were from cord prolapse with delayed intervention and traumatic internal version, emphasizing the importance of prompt, skilled technique 4