A large share of first caesareans are done for second-stage arrest, and some of that is the clock rather than true failure to progress. The established thresholds give time before the diagnosis is made, provided mother and baby are well and there is documented progress.
Allow at least three hours of pushing in a nulliparous woman and at least two hours in a multiparous woman, with an additional hour when a working epidural is in place, before diagnosing arrest. The diagnosis needs documented lack of descent or rotation despite adequate contractions, not simply elapsed time.
A stalled second stage is often an undiagnosed occiput-posterior position, so reassess position before deciding. Let maternal and fetal status, not the clock alone, drive the decision.
- Allow at least 3 hours of pushing in nulliparous and 2 hours in multiparous women, adding an hour with a working epidural, before diagnosing arrest.
- Require documented lack of descent or rotation despite adequate contractions before making the diagnosis.
- Reassess fetal position, as an undiagnosed occiput-posterior often explains slow descent.
- Keep maternal and fetal wellbeing central, so a prolonged but safe second stage is not called arrested on time alone.
Why it matters
Calling the second stage arrested too early drives avoidable primary caesareans when more time would have ended in vaginal birth.
Read the rest in the app
You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this finding is waiting in it.
Scan to keep reading on your phone. No account needed to start.
Tomorrow morning, before your first patient
One edition a day for obstetrics & gynaecology, written by the desk, every claim tied to its paper. Six minutes.
Get the app — free