看这个连接：

http://www.webmd.com/baby/external-cephalic-version-version-for-breech-position

If a first attempt at version is not successful in turning the fetus, your doctor may suggest another attempt, possibly with epidural anesthesia to help you relax and to reduce pain associated with the procedure. Studies suggest that epidural anesthesia increases the success of repeated version attempts.

好像说一次不行可以上爱批丢的。怎么跟你医生说的不一样呀？或许是不同的procesure?