VBAC Risk Assessment for Vaginal Delivery (Flamm Model)

Female Age < 40 years

History of Vaginal Delivery

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History of Vaginal Delivery

Vaginal delivery after first cesarean

Vaginal delivery after cesarean

Vaginal delivery before cesarean

No history of vaginal delivery

Reason for failed first cesarean

Cervical Effacement at Admission

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Cervical Effacement at Admission

> 75%

25-75%

< 25%

Cervical Dilation ≥ 4cm at Admission

Score:

Success Rate: