What could be most rare contraindication for breech Birth of a new born?
A rare contraindication for breech birth could be fetal anomalies like anencephaly, where structural issues make vaginal delivery extremely risky or nonviable.
A rare anomaly can be vasa previa.
It is a rare condition where the fetal blood vessels run over or near the cervical opening unprotected by the placenta or the umbilical cord. During delivery these vessels can rupture causing fetal hemorrhage and also death. Thus, vaginal delivery is contraindicated.
Practically speaking, a breech presentation goes for elective CS. It is not worth trying ante-version or breech delivery to avoid complications ( at least in USA). Also, as less and less breeches are being tried, so the OB may not have the skills to deliver a breech bay without risk of complications.
The rarest contraindication for a breech birth? Probably a fetal anomaly making vaginal delivery impossible, like severe hydrocephalus where the head is too large to pass safely.
It’s about baby’s safety first.
Few contraindications of breech birth includes: twin pregnancy (1st twin delivery)
Placenta previa or vasa previa,
Cephalopelvic disproportion,
Contracted pelvis,
Maternal heart disease during pregnancy
Anencephaly can be seen as a rare contraindication.