GPT and heart disorder: Hypotension was more common in children with heart disease, with greater clinical severity at the time of starting CRRT (evaluated using the PRISM, PIM, and PELOD scores, number of organ failures, lactic acid levels, MBP, need for mechanical ventilation or vasoactive drugs, dose of adrenaline and dopamine before starting CRRT, and liver function (ALT and bilirubin).