CRP and hydrops fetalis: In all the HF patients, the AUC for the CAR was 0.732 (95% CI =0.704–0.760, p < 0.001), the sensitivity and specificity were 66.2%and 72.7%, respectively, and the AUC for CRP was 0.729 (95% CI = 0.701–0.757,p < 0.001).