American Society of Anesthesiology Classification

American Society of Anesthesiology patient classification status

ASA I

Normal healthy Pt

ASA II

Pt with mild systemic disease; no functional limitation–eg, smoker with well-controlled HTN

ASA III

Pt with severe systemic disease; definite functional impairment–eg, DM and angina with relatively stable disease, but requiring therapy

ASA IV

Pt with severe systemic disease that is a constant threat to life–eg, DM + angina + CHF; Pts have dyspnea on mild exertion and chest pain

ASA V

Unstable moribund Pt who is not expected to survive 24 hours with or without the operation

ASA VI

Brain-dead Pt whose organs are removed for donation to another

E

Emergency operation of any type, which is added to any of the 6 above categories, as in ASA II E