Journal of Laboratory Physicians
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Year : 2019  |  Volume : 11  |  Issue : 3  |  Page : 186-191

Significance of platelet indices as severity marker in nonthrombocytopenic preeclampsia cases

1 Department of Pathology, MVJ Medical College and Research Hospital, Kolar, Karnataka, India
2 Department of Pathology, Sri Devaraj Urs Medical College, Kolar, Karnataka, India

Correspondence Address:
Shilpa Gopal Reddy
#28, “Chandavi”, 12th Main, BTM Layout, Bengaluru - 560 029, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JLP.JLP_161_18

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CONTEXT: Preeclampsia is often asymptomatic, and hence, its detection depends on signs or investigations. The platelet (PLT) parameters, in cases of preeclampsia with normal PLT count, are seldom analyzed. Hence, this study was undertaken to study the PLT parameters in nonthrombocytopenic preeclampsia cases. AIM: The aim was to evaluate the use of PLT indices as severity markers in nonthrombocytopenic preeclampsia cases. SUBJECTS AND METHODS: This prospective study was done on 120 cases of severe preeclampsia, 115 cases of preeclampsia without severe features, and 203 normal pregnant women admitted in the obstetrics wards during the study period of 1 year. The PLT indices obtained by analyzing anticoagulated blood were recorded. STATISTICAL ANALYSIS USED: Analysis of variance test was used to see the significance of association. Receiver operating characteristic (ROC) curve and binary regression analysis was used to estimate the cutoff value and examine the predictive value of the PLT parameters in the disease progression of preeclampsia. RESULTS: Even in the absence of thrombocytopenia, mean platelet volume (MPV) and PLT distribution width were significantly higher in severe preeclampsia group (P < 0.001) and were also positively correlating with mean arterial pressure (r = 0.38 and 0.20, respectively). ROC curve analysis showed that MPV had the highest area under the curve of 0.78 (95% confidence interval [0.719–0.842]). Cutoff value of >10.95 fl for MPV was found to have significant predictive value for disease progression in preeclampsia. CONCLUSIONS: Even in the absence of thrombocytopenia, PLT indices, especially MPV, have a good diagnostic significance in detecting severe preeclampsia. Further studies are required to evaluate their role as biomarkers in preeclampsia.

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