Mercer Judith S, Skovgaard Rebecca L, Peareara-Eaves Joann, Bowman Tracey A
University of Rhode Island College, RI, USA.
J Midwifery Womens Health. 2005 Sep-Oct;50(5):373-9. doi: 10.1016/j.jmwh.2005.04.023.
Nuchal cord, or cord around the neck of an infant at birth, is a common finding that has implications for labor, management at birth, and subsequent neonatal status. A nuchal cord occurs in 20% to 30% of births. All obstetric providers need to learn management techniques to handle the birth of an infant with a nuchal cord. Management of a nuchal cord can vary from clamping the cord immediately after the birth of the head and before the shoulders to not clamping at all, depending on the provider's learned practices. Evidence for specific management techniques is lacking. Cutting the umbilical cord before birth is an intervention that has been associated with hypovolemia, anemia, shock, hypoxic-ischemic encephalopathy, and cerebral palsy. This article proposes use of the somersault maneuver followed by delayed cord clamping for management of nuchal cord at birth and presents a new rationale based on the available current evidence.
脐带绕颈,即婴儿出生时脐带绕在颈部,是一种常见情况,对分娩、出生时的处理及随后的新生儿状况均有影响。20%至30%的分娩会出现脐带绕颈。所有产科医护人员都需学习处理脐带绕颈婴儿出生的管理技巧。根据医护人员所学的操作方法,脐带绕颈的处理方式各不相同,从头部娩出后、肩部娩出前立即夹紧脐带,到完全不夹紧脐带。目前缺乏特定管理技巧的证据。出生前剪断脐带这种干预措施与血容量减少、贫血、休克、缺氧缺血性脑病及脑瘫有关。本文建议采用翻筋斗手法并延迟脐带夹紧来处理出生时的脐带绕颈情况,并基于现有证据提出了新的理论依据。