CRP and Hyponatremia: In univariate analyses, 30-day mortality correlated with malignancy(p < 0.001), thrombophilia (p = 0.036) RV dysfunction (p = 0.012), higher respiratory rate (p = 0.005), higher PCO2 (p < 0.001),higher lactic acid (p = 0.002), elevated WBCs (p = 0.002), hyponatremia (p < 0.001), higher CRP (p < 0.001), higher PESI (p = 0.001) and ESC score (p < 0.001), high sPESI risk (p = 0.036) and higher UA/Cr (p < 0.001).