Table 1 American Society of Anesthesiologists (ASA) physical status

I

Normal, healthy patient

II

Patient with mild systemic disease which does not affect daily functioning (such as controlled hypertension, stable chronic obstructive pulmonary disease (COPD), well-regulated diabetes mellitus, mild obesity)

III

Severe systemic disease which affects daily functioning (such as coronary artery disease, heart failure or COPD limiting exercise tolerance, morbid obesity)

IV

Systemic disease that is a constant threat to life (such as invalidating COPD or heart failure, unstable angina pectoris)

V

Moribund patient