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Performance Scales

Last Updated: September 27, 2018

ASA Physical Status Classification System
System for pre-surgical function status assessment
ASA Physical Status Description
1 Normal healthy patient
2 Patient with mild systemic disease
3 Patient with severe systemic disease
4 Patient with severe systemic disease posing constant threat to life
5 Moribund patient not expected to survive without operation
6 Declared brain-dead patient whose organs are being removed for donor purposes
Karnofsky Performance Scale
Classification by functional status to compare therapies and establish prognosis
Score Description Capability
100 Normal no complaints, no evidence of disease Able to carry on normal activity and work with no special care required
90 Able to carry on normal activity, minor symptoms
80 Normal activity with effort, some symptoms

70

Cares for self; unable to carry on normal activity or work Unable to work; able to live at home and care for personal needs; varying requirement for assistance
60 Requires occasional assistance, cares for personal needs
50 Requires considerable assistance, frequent medical care
40 Disabled; requires special care and assistance Unable to care for self; requires institutional or hospital care
30 Severely disabled; hospital admission indicated, death not imminent
20 Very sick; hospital admission with active supportive care necessary
10 Moribund; fatal processes progressing rapidly
0 Dead

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