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Delivery of the posterior arm reduces shoulder dimensions in shoulder dystocia
Author(s) -
Kung J.,
Swan A.V.,
Arulkumaran S.
Publication year - 2006
Publication title -
international journal of gynecology and obstetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 97
eISSN - 1879-3479
pISSN - 0020-7292
DOI - 10.1016/j.ijgo.2006.02.026
Subject(s) - medicine , shoulder dystocia , circumference , posterior shoulder , surgery , pregnancy , genetics , geometry , mathematics , biology
Objective : To evaluate a possible reduction in shoulder diameter and circumference by extending the posterior arm during delivery, for an easier birth in cases of shoulder dystocia. Methods : In this study of 33 neonates the bisacromial diameter and axilloacromial circumference were measured within 72 h of birth, first with the neonate's arms by its chest and then with 1 arm extended above its head. Reductions in diameter and circumference were evaluated. Results : The mean ± SD differences in bisacromial diameter and axilloacromial circumference were 1.9 ± 0.69 cm and 2.52 ± 1.18 cm, respectively. A greater reduction was observed in neonates with a greater shoulder diameter. Conclusion : In cases of shoulder dystocia, delivery of the posterior arm should significantly reduce shoulder dimensions, especially in larger fetuses, and prevent a need for excessive traction.