CRP and hydrops fetalis: The researchers found (i) that the HRV was lower in patients with MODS than in patients with chronic heart failure, (ii) significant inverse correlations between the APACHE II score on one hand and SDNN, LF and VLF on the other (r = -0.470, p < 0.0001, r = -0.3, p < 0.001 and r = -0.51, p < 0.0001, respectively), and (iii) significant inverse correlations between CRP on one hand and HF and VLF on the other (r = -0.27, p = 0.004; r = -0.42, p < 0.0001, respectively).