“…In general, vertex presentation for both twins is considered to be the ideal setting for a trial of labor; VD may be appropriate for vertex-non-vertex presentation under certain circumstances, whereas CS is generally suggested as the appropriate route of delivery in cases of breech first twin. There is an overall agreement that a trial of labor always requires some prerequisites, including fetal heart rate monitoring of both twins, available blood and blood component products, ultrasound equipment in the delivery room, anesthesiologist and regional anesthesia, personnel for the resuscitation of both fetuses, the facility for performing an immediate CS if necessary and the presence of an obstetrician with experience in the active management of delivery [2,4,12]. The recommendations of scientific organizations are also general and not definite.…”