Than 20 Weeks Gestation Richard M. Pauli, M.D., Ph.D. Introduction .
Most intrauterine deaths occur during the first trimester.
In Depth tackles the issue of how intrauterine deaths prior to twenty weeks should be assessed. Little information is available on the causes of these subclinical pregnancy losses. Such losses, when recurrent, are frequently misinterpreted as being difficulties in conceiving. Probably many of these recurrent losses arise from intrinsic abnormalities of the early embryo and sometimes this may be secondary to chromosomal aberration. It is for that reason that cytogenetic studies are appropriate in couples with apparent subfertility of long duration.