Appointment schedule in light of COVID-19 restructure
| Previous PTB (<34+0 weeks) And/or previous MTL And or cone biopsy | First appointment as telephone consultation. Recommend one CL scan between 16 and 20 weeks, however: If CL >35 mm, follow-up appointments as telephone consultation; If CL 25–34 mm for follow-up FTF; If CL<25 mm for cerclage and telephone follow-up. Discharge at 26+0. |
| Incidental finding of a short or open cervix | Telephone consultation to replace FTF consultation postcerclage. If anxious, for continued FTF until 26 weeks*. |
| History of excisional cervical treatment>10 mm depth or>1 excisional treatment or cone biopsy Previous FDCS* | First appointment as telephone consultation. Recommend two CL scans between 16 and 24 weeks, refer back to routine care if CL >35 mm at 24 weeks. |
| Previous cervical cerclage | Telephone consultation or FTF±elective cerclage. |
| Cervical cerclage in current pregnancy | No FTF follow-up. If anxious, for continued FTF until 26 weeks*. |
*Amendments following the PDSA cycle reviews are in bold.
CL, cervical length; FDCS, fully dilated caesarean section; FTF, face to face; MTL, mid-trimester loss; PDSA, Plan Do Study Act; PTB, preterm birth.