If<unk>  are diagnosed in early delivery, before either twin is born, both fetuses can be delivered by Caesarean section. If one fetus has been partially born, attempts can be made to disimpact the twins manually, such as by the Zavanelli maneuver, with a view to performing an assisted delivery with ventouse or forceps. If the diagnosis is made only after the first<unk> has died in the birth canal, or if it is not expected to survive, the first twin may be decapitated and its head pushed up to allow safe delivery of the second twin. At least one case has been reported where hexoprenaline was used to relax the uterine smooth muscle to thereby temporarily inhibit labour and disimpact the fetal heads.
Locked twins
Conjoined twins
Vanishing twin
Monochorionic twins
Monoamniotic twins
Vestigial twin
Parasitic twin
Coffin birth