Abstract
PURPOSE: To study guide-wire engagement and entrapment by inferior vena caval (IVC) filters. MATERIALS AND METHODS: Patterns of engagement were determined in six IVC filters with four commonly used guide wires in a simulated IVC. Force required to disengage guide wires from filters was measured. RESULTS: Eleven engagement patterns were identified with J-tipped guide wires; straight guide wires never engaged. The Simon-Nitinol filter engaged guide wires with the highest frequency (P < .05). The 15-J guide wire was engaged most frequently overall (P < .0005) but disengaged with forces not significantly different (P > .05) from those required to open the J. Entrapment occurred with only the Vena-Tech (VT) and 12-F stainless steel Greenfield (12SSG) filters and the 1.5-J and 3-J guide wires. The former guide wire became entrapped regardless of engagement pattern; the latter became entrapped only when engaged in the hole in the apex of the 12SSG and VT filters. CONCLUSION: Guide wires with a J tip 3 mm or less in radius are at risk for entrapment by the 12SSG and VT filters.
Original language | English (US) |
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Pages (from-to) | 71-76 |
Number of pages | 6 |
Journal | RADIOLOGY |
Volume | 198 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1996 |
Externally published | Yes |
Keywords
- Catheters and catheterization, central venous access
- Catheters and catheterization, complications
- Vena cavae, filters
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging