You are about to perform surgery on a patient with an ASA score of 3 (American society of Anaesthesiologists). What does the score of 3 mean?
ASA score: a) Normal healthy - 1 b) Mild systemic disease, but no limitation of activity - 2 c) Severe systemic disease that limits activity but not incapacitating - 3 d) Incapacitating systemic disease which poses a threat to life - 4 e) Moribund and not expected to survive 24 hours even with operation - 5 Ref: Oxford Handbook of Clinical Specialities, Edition 8, Page 618