Primary care decision rule for suspected deep vein thrombosis
Clinical variable
Clinical score
Male
Use of hormonal contraception
Active cancer in the past 6 months
Surgery in the previous 30 days
Absence of leg trauma
Distention of collateral leg veins
Difference in calf circumference >3cm*
Abnormal d.dimer assay (clearview simplify) result
1
1
1
1
1
1
2
6
Total score
*calf circumference measured 10cm below tibial tubercle*
-
**Please see notes under “Investigation and advice for suspected Deep Vein Thrombosis