Related Experiment Video
Updated: Apr 17, 2026

An In vitro System to Gauge the Thrombolytic Efficacy of Histotripsy and a Lytic Drug
Published on: June 4, 2021
Catheter-directed thrombolysis for iliofemoral deep vein thrombosis: helpful or hurtful?
1Jobst Vascular Institute, Toledo, OH, USA.
Insights
Iliofemoral deep vein thrombosis (IFDVT) treatment may involve thrombus removal to reduce severe postthrombotic syndrome (PTS). Catheter-directed thrombolysis is supported for IFDVT until further data emerges.
Area of Science:
- Vascular Medicine
- Interventional Cardiology
- Thrombosis Research
Background:
- Iliofemoral deep vein thrombosis (IFDVT) is a severe form of deep vein thrombosis (DVT) associated with a high risk of debilitating postthrombotic syndrome (PTS).
- While anticoagulation is standard for DVT, evidence suggests that thrombus removal strategies may offer superior outcomes for IFDVT patients.
- Restoring venous patency through thrombus elimination may preserve valvular function and reduce long-term complications.
Discussion:
- Current evidence from observational studies and retrospective analyses supports thrombus removal for IFDVT.
- Catheter-directed thrombolysis is a key strategy explored for eliminating thrombus in IFDVT.
- The ATTRACT trial, a major randomized trial, is expected to provide definitive data on the efficacy of catheter-directed thrombolysis versus anticoagulation for IFDVT.
Key Insights:
- Eliminating thrombus in IFDVT is linked to reduced PTS severity and lower recurrence rates.
- Preserving venous patency and valvular function are potential benefits of thrombus removal.
- Catheter-directed thrombolysis is a promising intervention for managing IFDVT.
Outlook:
- The results of the ATTRACT trial are anticipated to significantly influence clinical guidelines for IFDVT management.
- Further research will clarify the optimal role of thrombus removal strategies in IFDVT.
- Until definitive data is available, catheter-directed thrombolysis remains a supported treatment option for IFDVT.
Abstract:
Iliofemoral deep vein thrombosis (IFDVT) represents a clinically important subset of patients with acute DVT and identifies those who are most likely to have the most severe postthrombotic syndrome (PTS). Anticoagulation is the therapy for most with acute DVT, although those with IFDVT have benefited from strategies of thrombus removal. Current information suggests that elimination of thrombus reduces PTS by restoring patency and potentially preserving valvular function. Observational studies suggest that elimination of thrombus reduces recurrence. Retrospective studies, observational data, cohort-controlled studies and randomized trials support a strategy of thrombus removal for patients with IFDVT. The largest randomized trial to date of catheter-directed thrombolysis versus anticoagulation, the ATTRACT trial, has just completed enrollment. The primary endpoint is PTS at 2 years. Data from ATTRACT are likely to have a major impact on patient care. Until then, available information supports the use of catheter-directed thrombolysis for IFDVT.
Related Concept Videos
Venous Thrombosis III: Interprofessional Care
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
Venous Thrombosis I: Introduction
Venous Thrombosis IV: Nursing Management
Peripheral Artery Disease III: Interprofessional Care

