ASA grades
The ASA Grades Physical Status Classification System has been in use for over 60 years. The purpose of the system is to assess and communicate a patient’s pre-anesthesia medical co-morbidities. The classification system alone does not predict the perioperative risks, but used with other factors (eg, type of surgery, frailty, level of deconditioning), it can be helpful in predicting perioperative risks.
ASA Grades 1
A normal healthy patient. No organic, physiologic, or psychiatric disturbance. A healthy patient with good excercise tolerance.
ASA 2
A patient with mild systemic disease which is well controlled, e.g. controlled hypertension or diabetes without systemic effects, mild obesity, pregnancy.
ASA 3
A patient with severe systemic disease. Has a controlled disease of more than one body system or one major system but no immediate danger of death; Previous myocardial infarction, stable angina, controlled congestive heart failure (CHF), poorly controlled hypertension, morbid obesity, chronic renal failure.
ASA 4
A patient with severe systemic disease that is a constant threat to life, e.g. unstable angina, symptomatic congestive heart failure or COPD.
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