Table 4.

American Society of Anaesthesiologists Physical Status Classification (ASA Classification).

ASA 1	Healthy patient without organic, biochemical or psychiatric disease.
ASA 2	A patient with mild systemic disease. No significant impact on daily activity. Unlikely impact on anaesthesia and surgery.
ASA 3	Significant or severe systemic disease that limits normal activity. Significant impact on daily activity. Likely impact on anaesthesia and surgery.
ASA 4	Severe disease that is a constant threat to life or requires intensive therapy. Serious limitation of daily activity. Major impact on anaesthesia and surgery.
ASA 5	Moribund patient that is likely to die in the next 24 h with or without surgery.
ASA 6	Brain-dead organ donor.