Shortened cervix

Shortened cervix — referral criteria for Obstetrics services.

Full SRC reference

Eligibility

At least one must be met for the patient to be eligible for referral.

Clinically suspected or confirmed shortened cervix with initial primary-care work-up completed

Red flags

Indicate urgent (Category 1) referral or emergency assessment.

Pregnant person with open cervix

Routine referral criteria

Determine Category 2 or 3 urgency.

Cervical length less than 10 millimetres 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 less than 25 millimetres 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…