Predictive value of prenatal ultrasound combined with long non-coding RNA CRNDE of women for their postpartum lower extremity deep venous thrombosis

Objective Deep vein thrombosis (DVT) is a common complication in obstetrics that needs early interaction. The study examined the expression change and clinical value of long non-coding RNA (lncRNA) colorectal neoplasia differentially expressed (CRNDE) in DVT early diagnosis.Methods One hundred patients with DVT after delivery and 100 healthy parturients without DVT were enrolled. Serum samples were collected one day before delivery and received qRT-PCR for mRNA detection. Prenatal coagulation markers including prothrombin time (PT), activated partial prothrombin time (APTT), fibrinogen (FIB) and thrombin time (TT), D-dimer (D-D), thrombomodulin (TM), and peroxidase anti-peroxidase soluble complex (PAP) were tested. The receiver operating characteristic (ROC) curve was drawn for the diagnostic value assessment.Results LncRNA CRNDE levels increased remarkably in the serum of DVT patients compared with the healthy controls, which were negatively correlated with serum concentration of PT, APTT, and TT while positively correlated with FIB, D-D, TM, and PAP. Serum CRNDE (HR = 5.973, 95% CI = 2.990–11.933, p < .001) was independently related to the occurrence of DVT after delivery. Then, ROC curve using serum CRNDE showed a good diagnostic value for DVT with the AUC of 0.899. ROC curve of ultrasonography combined with CRNDE produced an AUC of 0.968, and both sensitivity and specificity were enhanced compared to a single indicator.Conclusions The increase of CRNDE level was an independent risk factor for postpartum DVT. Prenatal ultrasonography combined with CRNDE can improve the predictive efficacy for DVT.