Which fetal head position is an absolute contraindication to the use of a ventouse (vacuum extractor) in operative vaginal delivery?
- A Occiput posterior at +1 station
- B Occiput transverse at +2 station
- C Face presentation (mentoanterior) ✓
- D Occiput anterior at +2 station in a multigravida
Correct answer: C. Face presentation (mentoanterior)
Explanation
Face presentation is an absolute contraindication to vacuum extraction because the cup cannot maintain a proper seal on the fetal face and application would directly injure the facial soft tissues and eyes. Mentoanterior face presentation may be delivered vaginally with forceps if conditions are met. Ventouse may be used with caution for OP or OT positions at appropriate stations provided criteria are otherwise met.
Reference: Williams Obstetrics, 26th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.