Why the study?
Does vacuum delivery compared to forceps delivery increase the risk of shoulder dystocia in patients requiring operative vaginal delivery?
Population
637 patients who were candidates for operative vaginal delivery
Comparison
Vacuum with M-cup vs Forceps
Design
RCT, Randomized either to forceps (N = 315) or vacuum with M-cup (N = 322)
Follow-up
From initial placement of instrument to final delivery
Authors
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Vacuum raises shoulder dystocia risk versus forceps in operative vaginal delivery; supports forceps preference and extends RCT evidence on OVD mode.
Does vacuum delivery compared to forceps delivery increase the risk of shoulder dystocia in patients requiring operative vaginal delivery?
In operative vaginal delivery, the use of vacuum, longer delivery time, and larger birthweight are significantly associated with an increased risk of shoulder dystocia.
Bofill et al. (1997) studied this question.
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