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A simple snare for the retrieval of an embolised central venous cannula.

Catheterisation of one of the intrathoracic great veins is useful for monitoring central venous pressure (CVP) or for the administration of fluids. However, as with most invasive procedures the use of a central venous catheter may be associated with complications. The dangers of catheter embolus and importance of surgical removal as soon as possible were reported more than 16 years ago (Doering et al, 1967). Since then many percutaneous techniques have been described for non-surgical removal (Fisher & Ferreyro, 1978; Bloomfield, 1978). We report a simple snare which may be used in any hospital undertaking angiographic procedures. While attempting to snare a catheter fragment in the vena cava using a conventional snare introduced through a long saphenous venotomy it became apparent that the lack of success was due to the loop being parallel to the fragment. A new snare was fashioned from a 6.5 French thinwalled catheter with a right-angle bend (normally used for renal angiography) with the short arm shorte...