Criteria for referral to level 6 public hospital maternity service

• Cervical length < 10mm measured by transvaginal scan with an empty bladder, performed over a minimum of 3 minutes to allow for dynamic cervix changes, at or before 26 weeks
• Cervical length < 25mm measured by transvaginal scan with an empty bladder, performed over a minimum of 3 minutes to allow for dynamic cervix changes, at or before 26 weeks unless the current obstetrics service provides a specialised preterm labour surveillance program.

Information to be included in the referral

Information that must be provided

• Antenatal history particularly including any history of preterm birth, cervical surgery, uterine anomalies
• Ultrasound reports.

Provide if available

•    Cervical microbiology.

Additional comments

The Summary and referral information lists the information that should be included in a referral request.

Early referral on diagnosis is crucial.

Referral to a level 6 maternity service should be considered in the context of the local maternity service system.  Referring clinicians should contact the closest level 5 maternity service to discuss options. 

Referral to a level 6 public hospital maternity service is not appropriate for

Not applicable.