The markers of hemostasis activation such as protein S, protein C activity together with fibrinogen levels are not useful tools but the reduction of AT-III and platelet counts would seem useful in different pathological situations in pregnancy to predict and monitor the severity of the condition.
The nuclear DNA content of 20 anembryonic pregnancies was studied by flow cytometry from paraffin embedded tissue blocks. An abnormal amount of DNA content was found in 8 of the cases. This was a significantly higher percentage than encountered in spontaneous abortions studied by the same population (40 and 9%, respectively, p < 0.05). The S-phase fraction in anembryonic pregnancies was lower than in spontaneous abortions (22.4 ± 12.7 and 35.4 ± 6.8, respectively, p < 0.01). The results indicated that abnormal embryogenesis with grave chromosomal aberrations may play a major role in the etiology of anembryonic pregnancy.
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