American Society of Anaesthesiologists ASA scale

 

I.           Normal Healthy patients

 

II.           Patients with mild systemic disease (Pregnancy, NIDDM, well controlled asthma, well controlled epilepsy)

 

III.          Patients with severe systemic disease that is limiting but not incapacitating

 

IV.          Patients with incapacitating disease that is a constant threat to life

 

V.           Patients not expecting to live more than 24 hours

Classification of a patient for anaesthetic risk