Q: How is a missed abortion or miscarriage diagnosed on an ultrasound (sonogram)?
A: A missed abortion is a non-viable pregnancy that is destined to miscarry, if there is a fetus it has no heart beat. About one to two in five early pregnancies will not survive to delivery. Some will grow for a while, with HCG in the urine and serum, but eventually will stop growing normally, and then will stop growing at all. Most of these (two-thirds) will have abnormal chromosomes.
A missed abortion or miscarriage can be diagnosed on ultrasound (sonogram) with several different signs. Signs and evidence of a missed abortion using high-resolution transvaginal scanning include: