Shoulder dystocia and range of head-body delivery interval (HBDI): The association between prolonged HBDI and neonatal outcomes: Protocol for a systematic review

Findings of this systematic review will provide reliable information regarding (1) the interval between birth of the head and birth of the shoulders and (2) neonatal outcomes attributed to either true SD or prolonged HBDI. Our findings will add to the knowledge of whether prolonged HBDI is an appropriate definition for SD and whether/what level of prolongation of HBDI results in adverse neonatal outcomes. This increased understanding will better inform the clinical practice of midwives and obstetricians.