CRP and hydrops fetalis: Compared to non-HF group, the HF group had higher levels of HR (74.44 vs. 71.02, P < 0.001), CRP (9.88 Mg/L vs. 7.93 Mg/L, P < 0.001), EMAT/LVST (0.40 vs. 0.30, P < 0.001), EMAT (13.97 ms vs. 10.84 ms, P < 0.001), S2 (48.36 ms vs. 41.31 ms, P < 0.001), PRD (142.51 vs. 131.57, P = 0.021), QRSD (82.87 vs. 77.45, P = 0.024) and RV5_SV1 (7.34 vs. 1.68, P < 0.001).