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. 2021 Aug 10;6(8):629–640. doi: 10.1302/2058-5241.6.200124

Table 2.

The American Society of Anesthesiologists Physical Status Classification

Revised ASA Physical Status Classification (Dripps et al)19
PS Class 1: no systemic condition ASA I: normal, healthy patient
PS Class 2: moderate systemic condition (pre-existent or caused by the condition being treated by the operation) ASA II: mild systemic condition
PS Class 3: severe systemic condition ASA III: severe systemic condition
PS Class 4: extreme systemic disorders, eminent threat to life regardless of the type of treatment ASA IV: severe systemic condition that is a constant threat to life
PS Class 5: class 1 or 2 patients undergoing an emergency operation ASA V: moribund, not expected to survive without the operation
PS Class 6: class 3 or 4 patients undergoing an emergency operation ASA VI: declared brain-dead, organs are being removed for donor purposes
PS Class 7: moribund, not expected to survive 24 hours with or without the operation *E emergency operation

Notes. ASA, American Society of Anesthesiologists; PS, physical status.

*E: may be added to indicate an emergency operation.

Source: Adapted from Fitz-Henry.1517,19