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- Title
OC16.04: External validation of the M6 model and the two‐step triage system for pregnancies of unknown location.
- Authors
Christodoulou, E.; Bobdiwala, S.; Kyriacou, C.; Farren, J.; Mitchell‐Jones, N.; Ayim, F.; Chohan, B.; Abhugazza, O.; Guruwadahyarhalli, B.; Al‐Memar, M.; Guha, S.; Vathanan, V.; Gould, D.; Stalder, C.; Wynants, L.; Timmerman, D.; Bourne, T.; Van Calster, B.
- Abstract
To externally validate the performance of the M6 risk model, and the two step triage system (2ST) to identify pregnancies of unknown location (PUL) at high risk of ectopic pregnancy. Step 1 triages patients as low risk if presenting progesterone (if available) is <=2 nmol/L, else a step 2 classification of low or high risk by M6 is calculated. We excluded women with presenting hCG <=25 IU/L. One centre performed step 1 triage using presenting progesterone <=10 nmol/L. PUL outcome was defined as failed (FPUL), intra-uterine (IUP), or ectopic/persisting (EP).
- Subjects
MODEL validation; HIGH-risk pregnancy
- Publication
Ultrasound in Obstetrics & Gynecology, 2019, Vol 54, p40
- ISSN
0960-7692
- Publication type
Article
- DOI
10.1002/uog.20529