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Peri-Operative Transfusion Trigger Score of Emergency (POTTS-E)

Description

Liu et al reported the peri-operative transfusion trigger score of emergency (POTTS-E) for evaluating appropriateness of blood transfusion in a patient undergoing emergency surgery. The authors are from Affiliated Hospital of Zunyi Medical College and Sichuan University in China.


Patient selection: emergency surgical patient with hemoglobin < 10 g/dL, age 44 to 55 years of age

 

Exclusion: cancer, hematologic disorder, history of coronary artery disease, obstetrical patient, nerve surgery

 

Parameters:

(1) shock index

(2) nasopharygeal temperature in °C

(3) FIO2 in percent (from 21 to 100%) required to keep >= 95% on pulse oximetry

(4) epinephrine in micrograms per kg per minute

 

Parameter

Finding

Points

shock index

< 1.5

0

 

1.5 to 2.0

1

 

> 2.0

2

temperature

< 38°C

0

 

38 to 40°C

1

 

> 40°C

2

FIO2

<= 35%

0

 

36 to 49%

1

 

>= 50%

2

epinephrine

0

0

 

0.001 to 0.05

1

 

>= 0.06

2

 

total score =

= SUM(points for all 4 parameters) + 7

 

Interpretation:

• minimum total score: 7

• maximum total score: 15

• Blood transfusion not needed if hemoglobin > 10 g/dL or total score 7.

• For a score between 7 and 10 then the total score could be used as a target for blood transfusion.


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