Assertion: residual thrombus | /r/HasProperty | good criterion
Facets:
value: for determining the duration of anticoagulation
type: PURPOSE
Source sentences:
text: Some studies confirmed the predictive value of residual vein obstruction for VTE recurrence in patients with unprovoked events  and one in patients with cancer , while others did not [133–136]. Two randomized studies showed that persistent residual thrombus was a good criterion for determining the duration of anticoagulation .