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[Mechanical complications at implantation sites]
1Département Anesthésie-Analgésie-Réanimation, Institut Gustave-Roussy, Villejuif, France.
Pathologie-Biologie
|April 24, 1999
Summary
Mechanical complications, like catheter embolism from pinch-off syndrome, are frequent with venous access devices. Early recognition and removal of ruptured devices or embolized fragments are crucial to prevent thrombo-embolism.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Medical Device Complications
Context:
- Mechanical complications of implanted venous access devices (VADs) are underreported.
- Catheter embolism, a severe complication, often results from pinch-off syndrome (POS).
Purpose:
- To highlight the incidence and causes of mechanical VAD complications.
- To emphasize the importance of recognizing POS and other causes of catheter embolism.
- To stress the need for timely intervention to prevent thrombo-embolism.
Summary:
- Mechanical complications, particularly catheter embolism due to pinch-off syndrome (POS) after subclavian vein access, are more common than literature suggests.
- POS incidence is significant (8/1000 in our experience), necessitating awareness of clinical and radiological rupture signs for device removal.
- Other causes include loss of adaptation and secondary migration, all requiring vascular interventional radiology for fragment removal to avoid thrombo-embolism.
Impact:
- Improved clinical recognition of VAD mechanical complications, especially POS.
- Guidance on preferable venous access sites for long-term catheterization.
- Emphasis on prompt removal of embolized fragments to prevent severe thrombo-embolic events.