Risk Score of Marcantonio et al for Predicting Postoperative Delirium Following Elective Noncardiac Surgery

age of the patient in years

< 70 years

0

>= 70 years

1

alcohol abuse

absent

0

present

1

TICS score

>= 30 (30 to 41)

0

< 30 (cognitive impairment)

1

SAS class

I to III

0

IV (severe physical impairment)

1

chemistry test results

sodium < 130 or > 150 mmol/L

1

potassium < 3.0 or > 6.0 mmol/L

1

glucose < 3.3 or > 16.7 mmol/L (< 60 or > 300 mg/dL)

1

other

0

type of surgery

aortic aneurysm repair

2

noncardiac thoracic surgery

1

other

0

0

low

1 - 2%

1 or 2

medium

8 - 19%

3 to 7

high

45 - 50%