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Antithrombin III levels in preeclampsia
E Aghai1, J Brunstein, M Quitt
1Institute of Hematology, Lady Davis Carmel Hospital, Haifa, Israel.
Israel Journal of Medical Sciences
|March 1, 1990
Summary
Preeclampsia is linked to lower Antithrombin III (AT-III) levels, particularly with significant proteinuria. Urinary protein loss is the primary cause of reduced AT-III activity in these patients.
Area of Science:
- Obstetrics and Gynecology
- Hematology
- Nephrology
Background:
- Preeclampsia is a serious pregnancy complication characterized by high blood pressure and potential organ damage.
- Antithrombin III (AT-III) is a crucial protein that regulates blood clotting.
- Reduced AT-III levels have been observed in preeclampsia, but the underlying mechanisms require further clarification.
Purpose of the Study:
- To compare Antithrombin III (AT-III) activity in preeclamptic patients versus normal pregnancies.
- To investigate the relationship between proteinuria severity and AT-III levels in preeclampsia.
- To identify factors influencing AT-III levels in preeclamptic pregnancies.
Main Methods:
- Antithrombin III (AT-III) activity was measured in 29 preeclamptic patients and 31 healthy pregnant women.
- Proteinuria levels were quantified and categorized.
- Multivariate analysis was employed to assess the impact of pregnancy duration and proteinuria on AT-III levels.
Main Results:
- AT-III levels were significantly lower (83 +/- 25%) in preeclamptic patients with proteinuria >5 g/l compared to controls (102 +/- 11%).
- Mild proteinuria did not correlate with decreased AT-III activity.
- Both pregnancy duration and the degree of proteinuria independently reduced AT-III levels.
Conclusions:
- Urinary protein loss is identified as the primary mechanism for diminished AT-III levels in preeclampsia.
- AT-III levels show a poor correlation with platelet counts and blood pressure in this cohort.
- Monitoring AT-III activity in relation to proteinuria may be valuable in managing preeclampsia.