VTE Test results ≤ 24 h Low
Await test results
+ Anticoagulation
Duration of Anticoagulation to Prevent 2nd 3 months
Unprovoked - Distal or proximal
Proximal DVT Surgical or transient factor 1st 1st
Distal DVT Surgical or transient factor 1st 1st
2nd
VTE Low bleed risk
Moderate-high bleed risk
Cancer Low or moderate bleed risk High bleed risk
a For categorization of bleeding risk see Table 2. ✔
✔ ✔ ✔
✔ ✔
proximal - Low or moderate bleed risk proximal - High bleed risk
proximal - Low or moderate bleed risk proximal - High bleed risk
✔ ✔ ✔
✔ ✔
✔ ✔ ✔ ✔ VTEa
Extended ✔ ✔
Clinical suspicion Intermediate
Test results > 4 h
High or confirmed
5
