Tromeur et al reported a score for recurrent venous thromboembolism (VTE) in a patient with unprovoked pulmonary embolism. This can help to identify a patient who may benefit from more aggressive management. The authors are participants in the PADIS-PE Study Group.
Patient selection: unprovoked pulmonary embolism
Outcome: recurrent venous thromboembolism
Parameters:
(1) age in years
(2) pulmonary vascular obstruction index (PVOI) in percent after 6 months of anticoagulation, from V/Q lung scan
(3) antiphospholipid antibodies measured after 6 months of anticoagulation (including lupus anticoagulant and anti-cardiolipin antibodies)
Parameter
Finding
Points
age in years
< 50 years
0
50 to 65 years
2
> 65 years
3
PVOI
< 5%
0
>= 5%
2
antiphospholipid antibodies
no
0
yes
2
where:
• If PVOI at 6 months is unlikely to be available, a PVOI >= 40% at baseline can be used.
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 7
Risk of Recurrent VTE
Riswk Group
Per 100 Person Years
0
low
1.29
2 or 3
intermediate
5.32
4 to 7
high
12.86
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