Assisted Vaginal Birth

When does assisted birth become an option during labor?

Ventouse or forceps may be discussed during the final stage of birth when clinical assistance becomes appropriate.

Reasons can include a prolonged second stage, concern about fetal wellbeing, the need to expedite birth or maternal circumstances in which prolonged pushing should be limited.

Assisted birth cannot be selected as a fixed pathway before labor, because the decision depends on circumstances at the time of birth.

Ventouse, forceps and how the instrument is selected

Ventouse or vacuum

Ventouse uses a specially designed cup attached to the baby's head using controlled suction.

During contractions and maternal pushing, the clinician uses traction to help the head continue through birth.

Forceps

Forceps are smooth curved instruments designed to fit around the baby's head and help guide and deliver it.

Neither instrument is universally better

Ventouse is not the best instrument in every situation, and neither are forceps.

Selection depends on fetal head position, how low the head is, fetal wellbeing, pain relief, urgency and practitioner expertise.

Preferences can be discussed, but the instrument must be appropriate for the clinical circumstances at the time of birth.

Clinical assessment before an assisted-birth attempt

Before using ventouse or forceps, the team reassesses labor progress and maternal and fetal condition.

Important considerations include fetal head position, how far the head has descended, pain relief and whether assisted birth is an appropriate option at that point.

There should also be a clear alternative plan if the attempt is unsuccessful or circumstances change.

Practitioner expertise

Instrument choice depends not only on the instrument itself, but also on the clinician's expertise in using it.

Pain relief and where assisted birth takes place

Pain relief

Pain relief should be acceptable before ventouse or forceps are used.

The appropriate technique depends on the clinical circumstances and pain relief already in place.

Local anesthesia, epidural or spinal techniques may be used depending on the situation.

Birth room or operating theatre

Assisted birth does not always take place in theatre.

A straightforward attempt may occur in the birth room.

If the attempt is expected to be more difficult or has a higher chance of being unsuccessful, it may take place in theatre so another birth pathway can follow promptly if required.

The assisted-birth attempt and limits to continuing

During the procedure, the clinician uses the selected instrument with contractions and pushing when appropriate.

Progress of the baby's head and maternal and fetal condition continue to be assessed.

An assisted-birth attempt should not continue indefinitely.

If expected progress does not occur, or clinical circumstances change, the situation is reassessed.

Ventouse cup detachment

The ventouse cup can occasionally detach during traction.

The clinician then assesses why this happened, progress of birth and whether continuing remains appropriate.

Sequential use of two instruments

Moving automatically from one instrument to another is not routine.

If the first instrument is unsuccessful, the clinical situation is reassessed because sequential instrument use can increase some risks.

Unsuccessful assisted birth and changing pathway

If birth is not progressing as expected, the priority is to reassess the safest next step, rather than continuing an unsuccessful attempt indefinitely.

Another instrument may be considered in selected circumstances, or emergency cesarean birth may become the more appropriate pathway.

When the baby's head is already low, assisted birth can sometimes provide an appropriate and timely way to complete birth.

In other circumstances, cesarean birth may be more appropriate.

Episiotomy, perineal tears and antibiotic prophylaxis

Episiotomy

Episiotomy is more common during some assisted births, but it is not automatically required.

The decision depends on the instrument, fetal position and clinical circumstances.

Perineal tears

Perineal tears can occur during vaginal birth, and some severe tears are more common following assisted birth.

The perineum is examined after birth and any injury is repaired according to its degree.

Antibiotic prophylaxis

NICE recommends offering a single prophylactic antibiotic dose after birth with ventouse or forceps to reduce infection risk.

The specific antibiotic depends on clinical protocol and medication allergies.

Effects on the baby and care after birth

Temporary marks and swelling

Temporary marks or swelling can occur on the baby's head or face depending on the instrument.

Many resolve without long-term problems, although less common complications can occur and require assessment.

Different risk profiles

Ventouse and forceps have different balances of benefits and risks.

Forceps are associated with a greater chance of some maternal perineal injuries, while ventouse is associated with particular scalp injuries or swelling.

Newborn assessment and early contact

Newborn support depends on why assisted birth was needed and the baby's condition after birth.

When mother and baby are stable, skin-to-skin contact and breastfeeding can often begin normally.

Consent, preferences and birth planning

The reason for recommending assisted birth, expected benefits, risks and available alternatives should be explained as time and urgency allow.

If assisted birth is declined, the remaining options can be discussed, although urgency and how advanced birth is may limit what remains clinically possible.

Discussing preferences before labor

Concerns about ventouse or forceps can be discussed during pregnancy and included in the birth plan.

This helps the maternity team understand preferences, but it cannot guarantee that every option will remain available if labor circumstances change.

Recovery, future births and why assisted birth is not bookable

Recovery

Recovery depends on how birth progressed, the instrument used, whether an episiotomy or tear occurred and maternal condition after birth.

Future birth

One assisted birth does not mean the next birth will require ventouse or forceps.

Future planning depends on why assistance was needed previously and the circumstances of the next pregnancy and labor.

Not a bookable birth service

Ventouse and forceps are intrapartum clinical interventions, not birth services that can be selected or booked in advance.

What can be assessed before birth is the maternity facility's experience and capability in managing different birth pathways and intrapartum interventions.