ASA PS | Definition | Descriptor (by ASA) | Cardiac | Pulmonary | Renal | Endocrine/GI | Other | Pedi | OB |
---|---|---|---|---|---|---|---|---|---|
ASA I | A normal healthy patient | All ages | All ages except premature infants | ||||||
ASA II | A patient with mild systemic disease | Mild diseases only without substantive functional limitations | Well controlled HTN; mild pulmonary HTN | Current smoker; mild lung disease (asthma, COPD, or OSA) | Chronic kidney disease (GFR > 44 ml/min) | Obesity (30 < BMI < 40); well controlled DM; mild GERD | Social alcohol drinker; History (> 3 months) of cancer unrelated to surgery; psychiatric does not affect daily living | URI > 2 weeks; mild asthma; allergic rhinitis; dental caries; sleep-disturbed breathing (snoring); mild developmental delay (motor or mental) | Uncomplicated pregnancy |
ASA III | A patient with severe systemic disease | Substantive functional limitations; one or more moderate to severe diseases | Poorly controlled HTN; implanted pacemaker; moderate reduction in ejection fraction; history (> 3 months) of MI, or CAD/stents; moderate to severe pulmonary HTN | Moderate to severe asthma, COPD, or OSA; on CPAP; on home oxygen | Chronic kidney disease (GFR < 44 ml/min); ESRD undergoing regularly scheduled dialysis | Morbid obesity (BMI ≥ 40); active hepatitis; alcohol dependence; moderate to severe GERD | History (> 3 months) of TIA or CVA cancer related to surgery; recent (< 3 months) cancer unrelated to surgery; psychiatric affects daily living | Former premature infant with PCA < 60 weeks; URI < 2 weeks; Moderate to severe asthma, OSA; moderate to severe developmental delay (motor or mental) | Complicated pregnancy |
ASA IV | A patient with severe systemic disease that is a constant threat to life | Recent (< 3 months) MI, or CAD/stents; ongoing cardiac ischemia or severe valve dysfunction; severe reduction of ejection fraction | ARD | ESRD not undergoing regularly scheduled dialysis | Recent (< 3 months) CVA or TIA; sepsis; DIC |