What is the likelihood of a successful pregnancy following an early pregnancy loss?

Updated: Nov 05, 2018
  • Author: Slava V Gaufberg, MD; Chief Editor: Jeter (Jay) Pritchard Taylor, III, MD  more...
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The prognosis for a successful pregnancy depends upon the etiology of previous spontaneous miscarriages, the age of the patient, and the sonographic appearance of the gestation.

Correction of an endocrine abnormality in women with recurrent miscarriage has the best prognosis for a successful pregnancy (>90%).

In women with an unknown etiology of prior pregnancy loss, the probability of achieving successful pregnancies is 40-80%.

The live-birth rate after documentation of fetal cardiac activity at 5-6 weeks of gestation in women with 2 or more unexplained spontaneous miscarriages is approximately 77%.

When the transvaginal pelvic sonogram shows an embryo of at least 8 weeks estimated gestational age (EGA) and cardiac activity, the miscarriage rate for patients younger than 35 years is 3-5% and for those older than 35 years is 8%.

Unfavorable sonographic prognostic indicators are a fetal cardiac activity rate that is slower than 90 beats per minute, an abnormally shaped or sized gestational sac, and a large subchorionic hemorrhage.

The overall miscarriage rate for patients older than 35 years is 14% and for patients younger than 35 years is 7%.

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