Exposures
The exposure was the planned mode of delivery in uncomplicated MCDA
twins, which was established before the onset of labor. This was
categorized as PCS or TOL, including spontaneous vaginal vertex
deliveries, assisted vaginal birth (forceps, Thierry’s spatula, and
ventouse deliveries), breech extraction of the second twin, and emergent
cesarean section. Breech extraction was performed in MCDA twins when
gestational age at delivery was 32 weeks or greater, in the absence of a
previous CS, and intertwin weight discordance was less than 15%.
In case of induction of labor, PCS, or breech extraction, informed
consent was provided and explained, detailing the risks and benefits of
each technique.