ASA class

Presurgical condition for anaesthesia

P1

A normal, healthy patient.

P2

A patient with mild systemic disease.

P3

A patient with severe systemic disease.

P4

A patient with severe systemic disease that is a constant threat to life.

P5

A moribund patient who is not expected to survive without the operation.

P6

A declared brain-dead patient whose organs are being removed for donor purposes.

Reference

ASAHQ.org