Key result
In a computer simulation model of shoulder dystocia, delivery of the posterior arm reduced clinician-applied force by 80% and brachial plexus stretch by 71% compared with the lithotomy position.
Why the study?
Do standard obstetrical maneuvers reduce delivery force and brachial plexus stretch in a computer simulation model of shoulder dystocia?
Population
3-dimensional computer simulation models of shoulder dystocia including a fetus and a maternal pelvis
Comparison
Standard obstetrical maneuvers vs Continued delivery in the lithotomy position
Design
Preclinical
Authors
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Simulation data support posterior arm delivery in modeled shoulder dystocia; leaves open translation to clinical outcomes and practice.
Do standard obstetrical maneuvers reduce delivery force and brachial plexus stretch in a computer simulation model of shoulder dystocia?
Effect estimate: 80% reduction in force, 71% reduction in stretch (posterior arm)
Computer simulation models demonstrate that standard obstetrical maneuvers for shoulder dystocia significantly reduce delivery force and brachial plexus stretch, with delivery of the posterior arm being the most effective.
Grimm et al. (2011) studied Shoulder dystocia. Standard obstetrical maneuvers (suprapubic pressure, oblique positioning, and delivery of the posterior arm) vs. Continued delivery in the lithotomy position (no maneuvers) was evaluated on Delivery force and brachial plexus stretch (80% reduction in force, 71% reduction in stretch (posterior arm)). In a computer simulation model of shoulder dystocia, delivery of the posterior arm reduced clinician-applied force by 80% and brachial plexus stretch by 71% compared with the lithotomy position.
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