Diagnostic value of sFlt‐1/PlGF‐1 ratio and plasma PROK1 for adverse pregnancy outcomes in women with hypertensive disease of pregnancy

Hypertensive disease of pregnancy (HDP) is one of the most important causes of increased maternal mortality and perinatal complications during pregnancy. We investigated the pregnancy outcomes of 156 HDP patients (65 gestational hypertension [GH], 13 chronic hypertension [CH], 74 preeclampsia‐eclampsia [PE‐EC], and 4 superimposed on PE [CH with PE]). In patients with different types of HDP, levels of soluble fms like tyrosine kinase‐1 (sFlt‐1), placental growth factor (PlGF)‐1, and prokinin‐1 (PROK1) were measured and compared. The predictive efficacy of these indicators was evaluated using receiving operating characteristics curves and area under the curve. Results showed that the PE cohort had a higher sFlt‐1/PlGF ratio (46.12 [39.24, 68.85]) and PROK1 (498.84 [213.67, 678.30] pg/mL) level than the GH (sFlt‐1/PlGF, 32.3 [21.98, 58.00], PROK1 300.77[250.0, 345.29]pg/mL) and CH cohort (sFlt‐1/PlGF, 37.49 [32.68, 39.68], PROK1, 281.48 [229.25, 453.94]pg/mL). In the HDP cohort, 54 patients experienced adverse pregnancy events, and the sFlt‐1/PlGF ratio, PROK1, and the combined indicators (sFlt‐1/PlGF ratio and PROK1) were excellent predictors of adverse pregnancy events, especially for PE patients.