Sera markers of HF were notably increased in those with LVEF < 30%: NT-proBNP: 17,500 ng/L vs. 16,200 ng/L, p < 0.001 and CPP: 17.5 ng/mL vs. 9.5 ng/mL, p < 0.001, respectively. This evidence concerns the gene NPPB and hydrops fetalis.