OBSbasic
Which finding most directly distinguishes established labour from isolated uterine contractions?
Answer
Regular contractions accompanied by progressive cervical change
Explanation
**Established labour** requires regular, rhythmic contractions that produce progressive cervical change. Contractions alone may occur without labour, while show or membrane rupture can accompany labour but is not required by the definition. **Key takeaway:** Demonstrate progressive cervical change in the presence of regular contractions.\n\n**Glossary:** **Effacement**: thinning of the cervix; **dilatation**: opening of the cervix.
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