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DASH Score for Unprovoked Venous Thromboembolism

Purpose: To predict the risk of recurrent thrombosis in a patient with a history of unprovoked venous thromboembolism using the DASH score of Tosetto et al.

Description

Tosetto et al reported the DASH score for patients with unprovoked venous thromboembolism. This can help to identify a patient who may not require long-term anticoagulation therapy. The authors are from multiple institutions in Europe and North America.


DASH is an acronym for D-dimer, Age, Sex and Hormonal therapy.

 

Patient selection: history of unprovoked venous thromboembolism

 

Outcome: recurrent venous thromboembolism

 

Parameters:

(1) plasma D-dimer concentration

(2) age of the patient in years

(3) sex

(4) hormonal therapy at time of initial thromosis

 

Parameter

Finding

Points

plasma D-dimer

normal

0

 

abnormal

2

age of the patient

<= 50 years

1

 

> 50 years

0

sex

female

0

 

male

1

hormonal therapy

no

0

 

yes

-2

 

total score =

= SUM(points for all 4 parameters)

 

Interpretation:

• minimum score: -2

• maximum score: 4

• A patient with a score <= 1 may not require long-term anticoagulation therapy.

 

Score

Annual Recurrence Rate

<= 1

3.1%

2

7%

3

10%

4

20%

 


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Specialty

Objective

ICD-10