Superior vena cava (SVC) filters placed over central lines - Analysis of line trapping and difficulties with line retrieval

An in-vitro experimental study

Jorge E Lopera, Murray Shapiro, Darlene Sanchez, Carolina Maya, Ghazwan Kroma, Andres E Garza-berlanga, Rajeev Suri

Research output: Contribution to journalArticle

Abstract

Background: Placement of superior vena cava (SVC) filters has been shown to be both safe and effective in preventing symptomatic pulmonary embolism in patients with upper extremity deep venous thrombosis that have contraindications to anticoagulation therapy. In many patients, existing central lines pose a challenge to SVC filter placement due to the theoretical risk of line displacement and/or entrapment. Purpose: To assess the risk of catheter entrapment by filter legs during SVC filter deployment and the risk of subsequent filter migration during catheter removal. Material and Methods: A model was created by placing a 22mm vascular graft inside a plastic tube and submerged in a warm saline bath. Five types of filters were deployed under fluoroscopic guidance over different types of central lines of varying calibers (5-14 Fr). Each filter was deployed five times over each type of central line. The positioning of the legs of the filters in relationship to the central lines was studied by fluoroscopic and direct inspection. The lines were then removed under fluoroscopic guidance noting any line trapping, migration, and/or tilting of the filters. Results: Movement of the lines during filter expansion was commonly seen after deployment of all filters with varying frequencies. During line removal slight resistance was encountered with the Celect filter (10%) and the Option filter (5%), while significant resistance was only encountered when using the OptEase filter (20%). Filter migration was only observed when the OptEase filter was deployed over large (>10 Fr) caliber lines (10%). Conclusion: When SVC filters are placed over existing central lines, the risk of catheter entrapment is very low in this in-vitro model. Filter migration during line retrieval was only observed when the OptEase filter was placed over >10 Fr caliber lines.

Original languageEnglish (US)
Pages (from-to)732-736
Number of pages5
JournalActa Radiologica
Volume55
Issue number6
DOIs
StatePublished - 2014

Fingerprint

Vena Cava Filters
Superior Vena Cava
Catheters
Leg
Pulmonary Embolism
Baths
Upper Extremity
Venous Thrombosis
Plastics
Blood Vessels
Transplants
In Vitro Techniques

Keywords

  • Catheters
  • Embolism/thrombosis
  • Filter insertions
  • Vena cava

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology
  • Medicine(all)

Cite this

Superior vena cava (SVC) filters placed over central lines - Analysis of line trapping and difficulties with line retrieval : An in-vitro experimental study. / Lopera, Jorge E; Shapiro, Murray; Sanchez, Darlene; Maya, Carolina; Kroma, Ghazwan; Garza-berlanga, Andres E; Suri, Rajeev.

In: Acta Radiologica, Vol. 55, No. 6, 2014, p. 732-736.

Research output: Contribution to journalArticle

Lopera, Jorge E ; Shapiro, Murray ; Sanchez, Darlene ; Maya, Carolina ; Kroma, Ghazwan ; Garza-berlanga, Andres E ; Suri, Rajeev. / Superior vena cava (SVC) filters placed over central lines - Analysis of line trapping and difficulties with line retrieval : An in-vitro experimental study. In: Acta Radiologica. 2014 ; Vol. 55, No. 6. pp. 732-736.
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abstract = "Background: Placement of superior vena cava (SVC) filters has been shown to be both safe and effective in preventing symptomatic pulmonary embolism in patients with upper extremity deep venous thrombosis that have contraindications to anticoagulation therapy. In many patients, existing central lines pose a challenge to SVC filter placement due to the theoretical risk of line displacement and/or entrapment. Purpose: To assess the risk of catheter entrapment by filter legs during SVC filter deployment and the risk of subsequent filter migration during catheter removal. Material and Methods: A model was created by placing a 22mm vascular graft inside a plastic tube and submerged in a warm saline bath. Five types of filters were deployed under fluoroscopic guidance over different types of central lines of varying calibers (5-14 Fr). Each filter was deployed five times over each type of central line. The positioning of the legs of the filters in relationship to the central lines was studied by fluoroscopic and direct inspection. The lines were then removed under fluoroscopic guidance noting any line trapping, migration, and/or tilting of the filters. Results: Movement of the lines during filter expansion was commonly seen after deployment of all filters with varying frequencies. During line removal slight resistance was encountered with the Celect filter (10{\%}) and the Option filter (5{\%}), while significant resistance was only encountered when using the OptEase filter (20{\%}). Filter migration was only observed when the OptEase filter was deployed over large (>10 Fr) caliber lines (10{\%}). Conclusion: When SVC filters are placed over existing central lines, the risk of catheter entrapment is very low in this in-vitro model. Filter migration during line retrieval was only observed when the OptEase filter was placed over >10 Fr caliber lines.",
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T2 - An in-vitro experimental study

AU - Lopera, Jorge E

AU - Shapiro, Murray

AU - Sanchez, Darlene

AU - Maya, Carolina

AU - Kroma, Ghazwan

AU - Garza-berlanga, Andres E

AU - Suri, Rajeev

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N2 - Background: Placement of superior vena cava (SVC) filters has been shown to be both safe and effective in preventing symptomatic pulmonary embolism in patients with upper extremity deep venous thrombosis that have contraindications to anticoagulation therapy. In many patients, existing central lines pose a challenge to SVC filter placement due to the theoretical risk of line displacement and/or entrapment. Purpose: To assess the risk of catheter entrapment by filter legs during SVC filter deployment and the risk of subsequent filter migration during catheter removal. Material and Methods: A model was created by placing a 22mm vascular graft inside a plastic tube and submerged in a warm saline bath. Five types of filters were deployed under fluoroscopic guidance over different types of central lines of varying calibers (5-14 Fr). Each filter was deployed five times over each type of central line. The positioning of the legs of the filters in relationship to the central lines was studied by fluoroscopic and direct inspection. The lines were then removed under fluoroscopic guidance noting any line trapping, migration, and/or tilting of the filters. Results: Movement of the lines during filter expansion was commonly seen after deployment of all filters with varying frequencies. During line removal slight resistance was encountered with the Celect filter (10%) and the Option filter (5%), while significant resistance was only encountered when using the OptEase filter (20%). Filter migration was only observed when the OptEase filter was deployed over large (>10 Fr) caliber lines (10%). Conclusion: When SVC filters are placed over existing central lines, the risk of catheter entrapment is very low in this in-vitro model. Filter migration during line retrieval was only observed when the OptEase filter was placed over >10 Fr caliber lines.

AB - Background: Placement of superior vena cava (SVC) filters has been shown to be both safe and effective in preventing symptomatic pulmonary embolism in patients with upper extremity deep venous thrombosis that have contraindications to anticoagulation therapy. In many patients, existing central lines pose a challenge to SVC filter placement due to the theoretical risk of line displacement and/or entrapment. Purpose: To assess the risk of catheter entrapment by filter legs during SVC filter deployment and the risk of subsequent filter migration during catheter removal. Material and Methods: A model was created by placing a 22mm vascular graft inside a plastic tube and submerged in a warm saline bath. Five types of filters were deployed under fluoroscopic guidance over different types of central lines of varying calibers (5-14 Fr). Each filter was deployed five times over each type of central line. The positioning of the legs of the filters in relationship to the central lines was studied by fluoroscopic and direct inspection. The lines were then removed under fluoroscopic guidance noting any line trapping, migration, and/or tilting of the filters. Results: Movement of the lines during filter expansion was commonly seen after deployment of all filters with varying frequencies. During line removal slight resistance was encountered with the Celect filter (10%) and the Option filter (5%), while significant resistance was only encountered when using the OptEase filter (20%). Filter migration was only observed when the OptEase filter was deployed over large (>10 Fr) caliber lines (10%). Conclusion: When SVC filters are placed over existing central lines, the risk of catheter entrapment is very low in this in-vitro model. Filter migration during line retrieval was only observed when the OptEase filter was placed over >10 Fr caliber lines.

KW - Catheters

KW - Embolism/thrombosis

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