American Society of Anesthesiology Classification

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American Society of Anesthesiology Classification

A system used by anesthesiologists to stratify severity of patients' underlying disease and potential for suffering complications from general anesthesia
American Society of Anesthesiology patient classification status
ASA I
Normal healthy Pt
ASA II
Pt with mild systemic disease; no functional limitation–eg, smoker with well-controlled HTN
ASA III
Pt with severe systemic disease; definite functional impairment–eg, DM and angina with relatively stable disease, but requiring therapy
ASA IV
Pt with severe systemic disease that is a constant threat to life–eg, DM + angina + CHF; Pts have dyspnea on mild exertion and chest pain
ASA V
Unstable moribund Pt who is not expected to survive 24 hours with or without the operation
ASA VI
Brain-dead Pt whose organs are removed for donation to another
E
Emergency operation of any type, which is added to any of the 6 above categories, as in ASA II E
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
American Society of Anesthesiologists physical status classification system ASA physical status classification Definition ASA I A normal healthy patient ASA II A patient with mild systemic disease ASA III A patient with severe systemic disease ASA IV A patient with severe systemic disease that is a constant threat to life ASA V A moribund patient who is not expected to survive without the operation ASA VI A declared brain-dead patient whose organs are being removed for donor purposes ASA = American Society of Anesthesiologists.
ASA VI A declared brain-dead patient whose organs are being removed for donor purposes E Emergency surgery required; used to modify the classification (e.g., ASA III-E) P Pregnant patient; used to modify the classification (e.g., ASA III-P) Sources: American Society of Anesthesiologists.
Category ASA I Definition A normal healthy patient ASA II A patient with mild systemic disease ASA III A patient with severe systemic disease ASA IV A patient with severe systemic disease that is a constant threat to life ASA V A moribund patient who is not expected to survive without the operation ASA VI A declared brain-dead patient whose organs are being removed for donor purposes Table 2: Nursing intensity scores in different ASA categories.