SCAI Shock Stage Calculator – STL Shock Consortium

Hemodynamics SBP <90 / MAP <60 or >30 mmHg drop HR >100 bpm CI <2.2 (if measured) PCWP >15 Profound hypotension despite maximal support

Perfusion / Exam Cold/clammy or weak pulses Altered mental status Urine output <30 mL/h Pulmonary rales / congestion Near pulselessness / cardiac collapse

Biochemical Lactate >2 Lactate >8 Creatinine ≥1.5× baseline or GFR ↓ ≥50% Worsening LFTs Severe acidosis (pH <7.2)

Support / Trajectory Escalating vasopressors/inotropes Mechanical circulatory support added Not improving / deteriorating despite therapy CPR / multiple defibrillations Cardiac arrest (Arrest modifier)