Confirming the Second Stage of Labour
Confirmation of second stage means establishing that the cervix is fully dilated and the woman has entered the period from full dilatation to birth of the baby, while simultaneously assessing maternal condition, fetal wellbeing, presentation, position, descent and whether vaginal birth remains safe.
A strong urge to bear down alone does not prove full dilatation. Conversely, some women reach full dilatation without an immediate urge. Confirmation therefore combines observed signs with a clinically indicated vaginal examination performed respectfully by a skilled practitioner.
Learning objectives
- Recognize presumptive and confirmatory signs of second stage.
- Perform a focused assessment and vaginal examination safely and with consent.
- Distinguish passive from active second stage and identify abnormal findings.
- Document findings and initiate the correct plan without unnecessary delay or intervention.
Phases and key definitions
| Phase | Features | Clinical approach |
|---|---|---|
| Passive second stage | Full dilatation but no involuntary expulsive urge; presenting part may still descend and rotate. | Continue support and surveillance; avoid forcing prolonged breath-holding in a stable woman and fetus. |
| Active/expulsive second stage | Full dilatation with involuntary bearing down, active pushing, visible descent or presenting part at the perineum. | Prepare for birth, encourage effective pushing with contractions and monitor closely. |
| Birth imminent | Progressive perineal bulging, anal gaping, opening of vulva and crowning. | Call assistance, protect warmth and privacy, position equipment and conduct controlled birth. |
Presumptive signs
Maternal behavioural and physical signs
- Strong involuntary urge to push, grunting or breath-holding during contractions.
- Increasing rectal and perineal pressure, sometimes described as an urge to pass stool.
- Change in vocalization, restlessness, altered breathing or renewed concentration.
- Nausea, vomiting, trembling or increased show may occur, but none is diagnostic alone.
Visible and abdominal signs
- Bulging, thinning and stretching of the perineum; anal gaping.
- Parting of the labia and progressively visible presenting part during contractions.
- Advancing descent on abdominal palpation; fewer fifths of the head palpable above the symphysis.
- Contractions commonly become strong and expulsive, but pattern alone cannot confirm full dilatation.
Important: Early pushing may also occur with an incompletely dilated cervix, malposition, rectal loading or strong pressure from a low presenting part. Do not diagnose second stage from behaviour alone.
Focused assessment before vaginal examination
- Introduce, explain and obtain consent. Ensure privacy, a chaperone according to policy, and the woman’s right to pause or decline while explaining clinical implications.
- Review the labour record. Note parity, risk factors, previous examinations, cervical progress, membrane status, liquor, medicines, analgesia and fetal heart trends.
- Assess maternal wellbeing. Check general appearance, pulse, blood pressure and respiratory rate as due; ask about pain, urge to push, bleeding, headache, visual symptoms, breathlessness and exhaustion.
- Assess fetal wellbeing. Auscultate fetal heart promptly, especially after a contraction, and interpret the rate and pattern in context. An abnormal rate requires urgent action rather than delay for a routine examination.
- Palpate the abdomen. Assess lie, presentation, position, descent in fifths, uterine activity and possible additional fetus. A head remaining high despite strong contractions suggests disproportion, malposition or obstruction.
- Inspect without unnecessary manipulation. Observe show, liquor, fresh bleeding, cord or presenting part at the vulva and perineal changes.
Confirmatory vaginal examination
Perform an examination when it will change management, using hand hygiene, sterile gloves, consent, privacy and gentle technique. Minimize examinations after rupture of membranes to reduce infection risk.
| No. | Action | Rationale and interpretation |
|---|---|---|
| 1 | Ask the woman to empty her bladder if possible; position comfortably and drape. | An empty bladder improves comfort and removes an obstacle to descent. |
| 2 | Inspect the vulva and perineum for bleeding, lesions, oedema, cord, liquor and visible presenting part. | Fresh bleeding, cord prolapse or an unexpected presentation changes priorities immediately. |
| 3 | Insert lubricated gloved fingers gently during or between contractions according to comfort and local practice. | Reduces pain and trauma; explain each step. |
| 4 | Assess the cervix. | Second stage is confirmed when no cervix is palpable around the presenting part—full dilatation of approximately 10 cm. A remaining rim means dilatation is incomplete. |
| 5 | Identify presentation, position and attitude using sutures and fontanelles when cephalic. | Detects occiput posterior/transverse, face, brow or breech presentation and informs whether vaginal birth is safe. |
| 6 | Assess station/descent, caput and moulding. | Severe caput or moulding with poor descent may signal obstruction or cephalopelvic disproportion. |
| 7 | Assess membranes and liquor. | Note intact/ruptured membranes, time of rupture, colour, smell and amount. Meconium or foul liquor requires heightened surveillance and review. |
| 8 | Withdraw gently, provide hygiene and comfort, explain findings, and auscultate fetal heart again. | The examination and contractions can be associated with fetal heart changes; the woman deserves immediate feedback. |
Diagnostic conclusion
Document one of the following clearly:
- Second stage confirmed, passive phase: cervix fully dilated, no active expulsive effort yet, maternal and fetal condition stable.
- Second stage confirmed, active phase: full dilatation plus involuntary or active pushing and descent.
- Second stage not yet confirmed: cervix not fully dilated; support panting or breathing through premature urge, change position, empty bladder, reassess fetal wellbeing and continue first-stage care.
- Abnormal second stage: full dilatation with fetal compromise, bleeding, abnormal presentation, suspected obstruction or failure of descent—activate review and emergency plan.
Interpreting progress without rigid rules
Assess progress using the whole clinical picture: parity, elapsed time since full dilatation, strength of contractions, maternal effort and condition, analgesia, fetal position, descent and fetal wellbeing. WHO’s Labour Care Guide uses alert thresholds to prompt assessment rather than automatic intervention. A threshold crossing should trigger review for reversible causes and need for assisted or operative birth; it is not by itself proof of obstruction.
Uganda and WHO guidance should be followed alongside facility protocols. Immediate escalation is required when there is no descent with adequate contractions, increasing caput or moulding, abnormal fetal heart rate, maternal deterioration, significant bleeding, cord prolapse, suspected uterine rupture or an undiagnosed abnormal presentation.
Differential explanations for an urge to push
| Finding | Possible explanation | Distinguishing assessment |
|---|---|---|
| Urge before full dilatation | Low head pressure, posterior position, cervical oedema | Vaginal examination shows remaining cervix; assess position and descent |
| No urge at full dilatation | Passive phase, epidural/analgesia, high presenting part | Full dilatation confirmed; monitor descent and wellbeing |
| Sudden urge with high head | Malpresentation or rapid change | Reassess lie, presentation, position and fetal heart urgently |
| Apparent pushing with severe pain | Obstruction or uterine complication | No descent, Bandl’s ring, tenderness, abnormal observations or fetal compromise |
Immediate care after confirmation
- Record exact time and all examination findings on the approved labour record.
- Explain the result and plan to the woman and companion.
- Call the second skilled attendant and complete birth/newborn readiness.
- Support the woman’s position and physiological urge; avoid routine fundal pressure.
- Monitor fetal heart frequently in active second stage; Uganda guidance specifies every five minutes.
- Assess contractions, descent, maternal pulse, blood pressure, respirations, bleeding, hydration and bladder.
- Prepare timely escalation when progress or wellbeing is abnormal.
Documentation checklist
- Date and exact time; indication for examination; consent and privacy.
- Cervical dilatation, presentation, position, station/descent, caput and moulding.
- Membranes and liquor; fetal heart before and after; contractions.
- Maternal observations, bladder status, bleeding and pain/coping.
- Passive or active phase, risks identified, actions, persons informed and review time.
Revision questions
- List six presumptive signs and state why none alone confirms second stage.
- Describe the examination that confirms full cervical dilatation.
- Differentiate passive and active second stage.
- Explain the response to an urge to push when a cervical rim remains.
- List danger signs requiring immediate obstetric review.