Cervical Incompetence
Posted in Obstetric Ultrasound on April 22, 2014 by m.khodeer
Multiple previous 2nd-trimester pregnancy losses
Different patient


Answers
Cervical Incompetence


- Image of the cervix in sagittal plane demonstrates spontaneous dilation of the cervical canal
- Second Image showed changing cervical length with transducer pressure
- Cervical length is the length of the closed cervix, normally >3 cm
Incompetent Cervix Stages

- Diagrams above show progressive funneling of the cervix: “Trust Your Ultrasound”
- Final stage is bulging membrances +/- fetal parts in vagina

- Bulging membrances shown above (“hourglass membranes”)
- Most cases of incompetent cervix are idiopathic, although there is an association with congenital anomalies, prior DES exposure, connective tissue disorders, and trauma [e.g., prior conization]
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