| ASA I |
A normal healthy patient |
Healthy, non-smoking, no or minimal alcohol use |
| ASA II |
A patient with mild systemic disease |
Mild diseases only |
| without substantive functional limitations. Examples include (but not |
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| limited to): current smoker, social alcohol drinker, pregnancy, obesity |
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| (30 < BMI < 40), well-controlled DM/HTN, mild lung disease |
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| ASA III |
A patient with severe systemic disease |
Substantive |
| functional limitations; one or more moderate to severe diseases. |
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| Examples include (but not limited to): poorly controlled DM or HTN, |
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| COPD, morbid obesity (BMI ≥40), active hepatitis, alcohol dependence or |
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| abuse, implanted pacemaker, moderate reduction of ejection fraction, |
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| ESRD undergoing regularly scheduled dialysis, premature infant PCA |
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| <60 weeks, history (>3 months) of MI, CVA, TIA, or CAD/stents |
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| ASA IV |
A patient with severe systemic disease that is a constant threat to life |
Examples include |
| (but not limited to): recent (<3 months) MI, CVA, TIA, or CAD/stents, |
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| ongoing cardiac ischemia or severe valve dysfunction, severe reduction |
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| of ejection fraction, sepsis, DIC, ARD or ESRD not undergoing regularly |
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| scheduled dialysis |
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| ASA V |
A moribund patient who is not expected to survive without the operation |
Examples include |
| (but not limited to): ruptured abdominal/thoracic aneurysm, massive |
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| trauma, intracranial bleed with mass effect, ischemic bowel in the face |
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| of significant cardiac pathology or multiple organ/system dysfunction |
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| ASA VI |
A declared brain-dead patient whose organs are being removed for donor purposes |
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