Table 6.

ASA physical status classification with examples

Class	Preoperative health status
PS 1	Normal patient with no organic disease; eg elective neutering procedures
PS 2	Patient with mild systemic disease; eg skin tumor or fracture without shock
PS 3	Patient with severe systemic disease limiting activity but not incapacitating; eg well controlled diabetes mellitus
PS 4	Patient with incapacitating systemic disease that is a constant threat to life; eg perforatedsmall intestine and severe hypovolemia
PS 5	Moribund patient not expected to live 24 h without surgery; eg severe trauma and shock

PS = physical status