|
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
|
