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Role of Calcium/Creatinine Ratio in Urine Compared with Proteinuria and Uric Acid in Predicting Preeclampsia: A Study from Kosovo

Lindita Ibrahimi, Myrvete Pa├žarada, Syheda Latifi Hoxha, Astrit Bimbashi, Vlora Ademi Ibishi

(Department of Gynecology, University Clinical Center of Kosovo, Medical Faculty, University of Prishtine, Prishtina, Kosovo)

Med Sci Monit Basic Res 2021; 27:e929845

DOI: 10.12659/MSMBR.929845

BACKGROUND: Preeclampsia is a common complication of pregnancy and a major cause of morbidity and mortality of mothers and babies worldwide. This study aimed to explore what the role of calcium/creatinine ratio is in urine compared with proteinuria and uric acid in predicting preeclampsia.
MATERIAL AND METHODS: In this prospective case-control study, 200 pregnant women who participated in the study were consecutively divided into 3 groups: a group of 59 women with preeclampsia, 61 women with pregnancy-induced hypertension, and a control group of 80 normotensive pregnant women. A 24-h urine sample was collected for estimation of calcium/creatinine ratio and proteinuria and a blood sample for estimation of uric acid at a gestational age of 24-34 weeks of pregnancy.
RESULTS: The study found that the sensitivity of proteinuria as a predictor of preeclampsia was 96.6% (P=0.000) and specificity was 21.3%. The sensitivity of uric acid as a predictor was 96.6% (P=0.000) and the specificity was 48.8%; whereas for the 24-h urine calcium/creatinine ratio, the sensitivity was 87.9% (P=0.000) and the specificity 40.7%, which corresponds to a value of 0.105 (cutoff). Women with a calcium/creatinine ratio <0.105 have a higher risk of developing preeclampsia (87.9% confidence interval, P=0.000).
CONCLUSIONS: The role of the calcium/creatinine ratio in urine is inferior to proteinuria and uric acid in predicting preeclampsia.

Keywords: Pre-Eclampsia, Proteinuria, Uric Acid

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