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[Subclavian vein thrombosis: medical treatment]
1Service d'Hypertension, Hôpital Saint-Joseph, Paris.
Insights
Subclavian vein thrombosis is increasingly linked to medical devices, not thoracic outlet syndrome. Standard anticoagulation with heparin and anti-vitamin K is recommended to prevent pulmonary embolism and post-thrombotic syndrome.
Area of Science:
- Vascular Medicine
- Diagnostic Imaging
- Interventional Cardiology
Context:
- Subclavian vein thromboses (SVT) are rare but increasingly associated with central venous catheters and pacemakers.
- The incidence of SVT has shifted from thoracic outlet syndrome to device-related causes.
- SVT can be asymptomatic, particularly when catheter-induced.
Purpose:
- To review the diagnosis and optimal management of subclavian vein thromboses.
- To evaluate the efficacy and risks of different treatment modalities for SVT.
- To provide guidance on preventing complications such as pulmonary embolism and post-thrombotic syndrome.
Summary:
- Phlebography is the gold standard for diagnosing SVT, as B-mode ultrasound can be unreliable in this region.
- Optimal treatment involves anticoagulation with heparin followed by anti-vitamin K to prevent pulmonary embolism and post-thrombotic syndrome.
- Thrombolytic therapy carries unacceptable risks for upper limb venous thrombosis; surgery is reserved for rare cases like phlematia caerulea or septic thrombosis.
Impact:
- This review clarifies diagnostic standards and preferred treatment strategies for subclavian vein thrombosis.
- It emphasizes the importance of anticoagulation over potentially risky thrombolysis for upper limb venous thrombosis.
- The findings support evidence-based management to improve patient outcomes and reduce long-term complications.
Abstract:
Thromboses of the subclavian vein are rare. However there is a higher incidence due to the increasing use of central venous catheters and pacemakers. Thoracic outlet syndrome is no longer the main cause. Thromboses may be clinically apparent, however when they are caused by the insertion of a catheter, thromboses may be symptom-free. Phlebography is the gold standard for the diagnosis. B mode ultra-sounds may give false results in that particular location. The optimum treatment of subclavian thromboses should prevent the occurrence of pulmonary embolisms, and the development of post-thrombotic syndrome. Heparin followed by anti-vitamin K meets these two objectives in the majority of cases. The risks of thrombolytic therapy is, in our opinion, unacceptable to promote thrombolysis to treat upper limb venous thrombosis. Surgery is indicated in cases of phlematia caerulea which are extremely rare, and in cases of septic thrombosis. The preventive treatment of the opposite side of a symptomatic thoracic outlet syndrome, is questionable, except in the case where the findings of the clinical examination, B mode ultrasound and phlebography results, are in favor of a intermittent compression of the vein with a risk of thrombosis.