GPT and cardiac arrest: Utilizing data from 3,455 patients across 17 hospitals from 2016 to 2021, the SCAI-CSWG classification provides specific threshold values to define hypotension (SBP and MAP) and hypoperfusion [lactate, alanine transaminase (ALT), pH] across all stages, and incorporates other relevant variables including treatment intensity (number of vasoactive agents, inotropic therapy, and acute MCS devices) and out-of-hospital cardiac arrest (OHCA).