Table 1: American Society of Anesthesiology's physical status (ASA PS) class.

ASA scoreDefinition

1A normal healthy patient
2A patient with mild systemic disease
3A patient with severe systemic disease
4A patient with severe systemic disease that is a constant threat to life
5A moribund patient who is not expected to survive without the operation
6A declared brain-dead patient whose organs are being removed for donor purposes