Utility of the impedance cardiography during the CRRT. Subjects were categorized into one of four hemodynamic quadrants according to SI and TFC. (A) SI >35 and TFC ≤ 35; (B) SI ≤35 and TFC ≤35; (C) SI >35 and TFC >35; (D) SI ≤35 and TFC >35. For each quadrant, the open, hatched and dotted columns represent the healthy controls, and cancer patients at the initiation and at the end of the CRRT, respectively. The number of the subjects was denoted on top of the individual columns. *P<0.05 vs. pre- or post-CRRT value; †P<0.05 vs. post-CRRT values. CRRT, continuous renal replacement therapy; TFC, thoracic fluid content; SI, stroke index.