CARES Surgical Risk Calculators of Chan et al: 30-Day Mortality Score

Description

Chan et al reported the CARES Surgical Risk Calculators for evaluating a surgical patient. These can help to identify a patient who may require more aggressive management. The authors are from Singapore General Hospital, University of Singapore and Duke-NUS Medical School in Singapore.

CARES stands for Combined Assessment of Risk Encountered in Surgery

Patient selection: surgical patient >= 18 years of age

Outcome: mortality within 30 days

Parameters:

(1) age in years

(2) surgical risk

(3) anemia status

(4) RDW (red cell distribution width) in percent

(5) ischemic heart disease

(6) ASA classification

(7) surgical acuity

Parameter	Finding	Points
age in years	18 to 29	0
	30 to 49	3
	50 to 74	5
	75 to 84	6
	>= 85	8
surgical risk	low	0
	moderate	2
	severe	2
anemia	none	0
	mild	1
	moderate	3
	severe	3
RDW	<= 15.7	0
	> 15.7	2
ischemic heart disease	absent	0
	present	2
ASA	1 or 2	0
	3	4
	4	7
surgical acuity	elective	0
	emergency	3

total score =

= SUM(points for all 7 parameters)

Interpretation:

• minimum score: 0

• maximum score: 27

• The higher the score the greater the risk for 30-day mortality.

Performance:

• The area under the ROC curve was 0.93.

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CARES Surgical Risk Calculators of Chan et al: 30-Day Mortality Score

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