Pregnancy of uncertain viability

Case contributed by RMH Core Conditions


Admitted post trauma. 8/40 pregnant. PV spotting.

Patient Data

Age: 53
Gender: Female

Intrauterine gestational sac demonstrated, measuring 22 mm in maximal dimension. The sac has a flattened shape. This does not demonstrate a fetal pole on either transabdominal or transvaginal scanning. No pelvic free fluid.

Case Discussion

Current guidelines state that absence of a fetal pole with a mean sac diameter (MSD) of >25 mm is diagnostic of anembryonic pregnancy, but a MSD of 16-24 is certainly suspicious, and given the patient's stated LMP, this is even more suspicious. This is at this stage, a pregnancy of uncertain viability (PUV), with poor prognostic factors. It requires followup with serial bHCG and a repeat ultrasound.

Follow-up ultrasound demonstrated disappearance of the gestational sac with a decreased beta hCG, confirming a failed early pregnancy.

PlayAdd to Share

Case information

rID: 34207
Published: 10th Feb 2015
Last edited: 14th Aug 2019
System: Obstetrics
Inclusion in quiz mode: Included

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.