Nalbanski A, Nikolov A
Akush Ginekol (Sofiia). 2009;48(5):11-4.
Episiotomy continues to be a frequently used procedure in obstetrics despite little scientific support for its routine use. The rationale for routine episiotomy is based on two foundation arguments: that episiotomy reduces perineal trauma and that it prevents subsequent pelvic relaxation. A careful review finds little evidence to support these arguments. Although episiotomy does decrease the occurrence of anterior lacerations, it fails to accomplish the majority of goals stated as reasons for its use. Episiotomy does not decrease damage to the perineum but rather increases it. The midline episiotomy increases the risk for third-degree and fourth-degree lacerations. Episiotomy fails to prevent the development of pelvic relaxation and its attendant complications. Rather than decreasing maternal morbidity, episiotomy increases blood loss and is related to greater initial postpartum pain and dyspareunia. The claims of a protective effect on the fetus in shortening the second stage of labor, improving Apgar scores, and preventing perinatal asphyxia have not been borne out. Efforts should be directed to determine whether episiotomy is beneficial. It is now very important to improve new birthing techniques that maintain the integrity of the perineum and do not involve surgical procedures. More trials are necessary to clarify which are the real indications to use episiotomy. Meanwhile, without the proper scientific evidence, the most correct attitude seems to be a careful use of episiotomy, with decisions on a case-by-case basis.
尽管会阴切开术的常规使用几乎没有科学依据,但它仍是产科中常用的手术。常规会阴切开术的理论依据基于两个基本论点:会阴切开术可减少会阴创伤,并且可防止随后的盆腔松弛。仔细审查后发现几乎没有证据支持这些论点。尽管会阴切开术确实会减少前侧撕裂伤的发生,但它未能实现作为其使用理由所述的大多数目标。会阴切开术不会减少对会阴的损伤,反而会增加损伤。正中会阴切开术会增加三度和四度撕裂伤的风险。会阴切开术无法防止盆腔松弛及其相关并发症的发生。会阴切开术非但不会降低产妇发病率,反而会增加失血量,并且与产后初期更剧烈的疼痛和性交困难有关。关于会阴切开术在缩短第二产程、提高阿氏评分和预防围产期窒息方面对胎儿有保护作用的说法尚未得到证实。应致力于确定会阴切开术是否有益。现在,改进能保持会阴完整性且不涉及外科手术的新分娩技术非常重要。需要进行更多试验以明确使用会阴切开术的真正指征。与此同时,在没有适当科学证据的情况下,最正确的态度似乎是谨慎使用会阴切开术,并根据具体情况做出决定。