Arabin cervical pessary in women at high risk of preterm birth: a magnetic resonance imaging observational follow‐up study

Abstract

In patients at high risk for preterm delivery, correct placement of the Arabin cervical pessary should be checked immediately; this can be performed quickly and easily using MRI. This study provides some evidence that, in singleton pregnancies with a short cervix, a cervical pessary delays birth through a mechanical effect on the uterocervical angle.