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In case of a previous Caesarean section (surgically), a subsequent pregnancy can be planned beforehand to be delivered by either of the following two main methods: *Vaginal birth after Caesarean section (VBAC) *Elective repeat Caesarean section (ERCS) Both have higher risks than a vaginal birth with no previous Caesarean section. Criteria for making VBAC include that the previous Caesarean section should be a low transverse one. VBAC confers a higher risk for mainly uterine rupture and perinatal death of the child than ERCS.〔 Furthermore, opting for VBAC results in 20-40% of times in that Caesarean section is performed eventually anyway, with greater risks for complications in an emergent repeat Caesarean section than in an ERCS.〔〔 On the other hand, VBAC confers less maternal morbidity and a decreased risk of complications in future pregnancies than ERCS.〔 ==Technique== For a VBAC, depending on the provider, special precautions may be encouraged during a trial of labor following a Caesarean section, including IV or IV port placement, continuous or intermittent fetal monitoring, and conservative or absent labor induction and augmentation using chemical stimulants. Other intrapartum management options, including analgesia/anesthesia, are identical to those of any labor and vaginal delivery. For ERCS, the choice of skin incision should determined by what seems to be most beneficial for the present operation, regardless of the choice of the previous location as seen by its scar. Hypertrophic scars are best excised because it gives a better cosmetic result and is associated with improved wound healing. On the other hand, keloid scars should have there margins left without any incision because of risk of tissue reaction in the subsequent scar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Delivery after previous Caesarean section」の詳細全文を読む スポンサード リンク
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