American Society of Anesthesiologists (ASA) Classification
The ASA classification (Table) aims to predict perioperative mortality rates but has since been proven to predict both postoperative pulmonary and cardiac complications (9). Higher ASA class was associated with a substantial increase in risk when an ASA class of II or greater was compared with an ASA class of less than II (odds ratio, 4.87 [CI, 3.34 to 7.10]) and when an ASA class of III or greater was compared with an ASA class of less than III 


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