An objective definition of shoulder dystocia: Prolonged head-to-body delivery intervals and/or the use of ancillary obstetric maneuvers

Abstract

The incidence of shoulder dystocia, as defined by the use of ancillary obstetric maneuvers, is higher than that reported previously, and the reporting of shoulder dystocia appears to be unreliable. The interval from head-to-body delivery is delayed significantly in patients with shoulder dystocia, despite the lack of recognition of shoulder dystocia. We propose defining shoulder dystocia as a prolonged head-to-body delivery time (eg, more than 60 seconds) or the need for ancillary obstetric maneuvers.