D-dimer test for early detection of HELLP syndrome

Area of Science:

• Obstetrics and Gynecology
• Hematology
• Clinical Chemistry

Background:

• Preeclampsia is a serious pregnancy complication.
• HELLP syndrome (hemolysis, elevated liver enzymes, low platelet count) is a severe variant of preeclampsia.
• Early identification of patients at risk for HELLP syndrome is crucial for timely intervention and improved outcomes.

Purpose of the Study:

• To evaluate the utility of the D-dimer test in predicting the risk of HELLP syndrome in preeclamptic women.
• To assess the correlation between D-dimer test results and clinical and laboratory parameters in preeclampsia.

Main Methods:

• A prospective study involving 81 preeclamptic women and 12 control subjects.
• D-dimer testing was performed on all participants.
• Clinical parameters (mean arterial pressure) and laboratory values (platelet count, liver enzymes) were recorded.
• Maternal and fetal outcomes, including infant birth weight and Apgar scores, were analyzed.

Main Results:

• D-dimer test results were positive in 43 preeclamptic women and negative in 38; all controls were negative.
• D-dimer-positive preeclamptic women exhibited significantly higher mean arterial pressures, lower platelet counts, and elevated liver enzymes compared to D-dimer-negative patients.
• Infants born to D-dimer-positive mothers had significantly lower birth weight and Apgar scores.
• A negative D-dimer test showed a high negative predictive value (0.89) for laboratory abnormalities associated with HELLP syndrome.

Conclusions:

• The D-dimer test is a valuable tool for identifying preeclamptic women at high risk for developing HELLP syndrome.
• D-dimer-positive patients require close monitoring due to increased risk of severe complications.
• D-dimer-negative results suggest a lower likelihood of HELLP syndrome and a better maternal-fetal prognosis.