Failed early pregnancy

Case contributed by Dr Huy Sruy


Young woman presents with suprapubic pain.

Patient Data

Age: 25 years
Gender: Female

CRL (Crown rump length) is 20 mm on these transabdominal views and no heartbeat is seen.

Case Discussion

To minimize the risk of false positive diagnosis of miscarriage:

  • a mean sac diameter (MSD) cut off >25 mm


  • a crown rump length (CRL) cut off >7 mm 

without a detectable heart rate is compatible with early pregnancy failure.

Please note that these values are for endovaginal (transvaginal) imaging. If transabdominal imaging only, then the CRL cut off is >15 mm.

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Case information

rID: 63534
Published: 8th Oct 2018
Last edited: 14th Jan 2020
System: Obstetrics
Inclusion in quiz mode: Included

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