Classification of cardiogenic shock severity based on Society of Cardiovascular Angiography and Interventions (SCAI) staging system

Table 3.17-1. Classification of cardiogenic shock severity based on the Society of Cardiovascular Angiography and Interventions (SCAI) staging system
Stage	Description
A	At risk: patients with a condition that predisposes to cardiogenic shock but currently has no signs or symptoms of shock
B	Beginning: presence of hypotension without hypoperfusion
C	Classic: presence of hypotension and hypoperfusion necessitating intervention, pharmacologic or mechanical support
D	Deteriorating: persistence of shock despite initial resuscitative measures requiring escalation
E	Extremis: acute or impending cardiovascular collapse
Adapted from Catheter Cardiovasc Interv. 2019;94(1):29-37.