Difficult birth, typically caused by a large or awkwardly positioned fetus, by smallness of the maternal pelvis, or by failure of the uterus and cervix to contract and expand normally.
- ‘In gestational diabetes, shoulder dystocia is the complication most anticipated at the time of delivery.’
- ‘Male calves resulting from these matings express a higher incidence of dystocia than heifer calves because male calves are gestated longer and have considerably larger birthweights.’
- ‘Mott's family started selecting sires for lower birth weights years ago, sacrificing some growth but reducing dystocia.’
- ‘Additional prospective studies are necessary to establish the usefulness of this diagnostic modality to predict dystocia, so it is not recommended at this time.’
- ‘Her last child weighed 4.4 kg at birth and slight shoulder dystocia was noted at delivery.’
Early 18th century: from Greek dustokia, from dus- difficult + tokos childbirth.