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Tranfusion Risk and Clinical Knowledge (TRACK) Score of Ranucci et al for Predicting Blood Transfusion Associated with Cardiac Surgery

Purpose: To identify a cardiac surgery patient who will need allogeneic blood transfusion using the TRACK score of Ranucci et al.

Description

Ranucci et al developed the TRACK (Transfusion Risk and Clinical Knowledge) score for predicting blood transfusion associated with cardiac surgery. This can help to identify a patient who is more likely to use blood and to plan accordingly. The authors are from IRCCS Policlinico S. Donato in Milan and the University of Siena in Italy.


Patient selection: cardiac surgery

 

Outcome: allogeneic blood transfusion given (not number of units

 

Parameters:

(1) age of the patient in years

(2) gender

(3) weight and gender

(4) complex surgery

(5) preoperative hematocrit

 

Parameter

Finding

Points

age of the patient in years

<= 67 years

0

 

> 67 years

6

gender

male

0

 

female

4

weight and gender

female and >= 60 kg

0

 

female and < 60 kg

2

 

male and >= 85 kg

0

 

male and < 85 kg

2

complex surgery

no

0

 

yes

7

preoperative hematocrit

>= 40 percent

0

 

< 40 percent

MIN(13, 40-HCT)

 

total TRACK score =

= SUM(points for all 5 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 32

• The higher the score the greater the likelihood of blood transfusion.

 

X for transfusion risk in development group =

= (0.132 * (TRACK)) - 1.288

 

X for transfusion risk in validation group =

= (0.123 * (TRACK)) - 0.886

 

probability of blood transfusion =

= 1 / (1 + EXP((-1) * X))

 

Performance:

• The AUC for the total population was 0.71.


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Specialty

Objective

ICD-10