Radiographic Findings of Distressed Venous Stents and Inferior Vena Cava Filters: Clinical Implications.

MedStar author(s):
Citation: AJR. American Journal of Roentgenology. 209(5):1150-1157, 2017 NovPMID: 28858539Institution: MedStar Washington Hospital CenterDepartment: Surgery/Vascular SurgeryForm of publication: Journal ArticleMedline article type(s): Journal ArticleSubject headings: *Graft Occlusion, Vascular/dg [Diagnostic Imaging] | *Stents | *Vena Cava Filters | *Vena Cava, Inferior/dg [Diagnostic Imaging] | *Venous Thrombosis/dg [Diagnostic Imaging] | Adolescent | Adult | Aged | Aged, 80 and over | Endovascular Procedures | Female | Graft Occlusion, Vascular/et [Etiology] | Graft Occlusion, Vascular/th [Therapy] | Humans | Male | Middle Aged | Phlebography | Retrospective Studies | Treatment Outcome | Vascular Patency | Venous Thrombosis/et [Etiology] | Venous Thrombosis/th [Therapy] | Young AdultYear: 2017Local holdings: Available online from MWHC library: Sept 1965 - presentISSN:
  • 0361-803X
Name of journal: AJR. American journal of roentgenologyAbstract: CONCLUSION: Distressed intravascular implants are associated with high-grade venous stenosis or occlusion. Reparative interventions are usually technically successful.MATERIALS AND METHODS: Seventy-eight patients with distressed stents or inferior vena cava (IVC) filters characterized by pursing (short-axis contracture), straightening, longitudinal contraction (long-axis contracture), or fracture were identified from retrospective review of a venous registry for the period from February 2004 to October 2016. Patients originally presented with superior vena cava (SVC) syndrome (n = 25), arm swelling (n = 16), iliocaval thrombosis (n = 21), and lower extremity deep venous thrombosis (n = 16), and stents were initially placed in 65 and filters in 13. Implants were located in the IVC (n = 24), subclavian vein (n = 16), brachiocephalic vein (n = 15), common iliac vein (n = 10), multiple veins (n = 4), axillary vein (n = 4), common femoral vein (n = 3), SVC (n = 1), and internal jugular vein (n = 1). Implants included Wallstents in 63 patients; Smart stents in two patients; and Celect Platinum, Denali, Greenfield, and Trapease IVC filters in two, three, two, and six patients, respectively. Venographic indication, distress type, time from initial normal placement to identification of distress, venographic finding (patent, mild stenosis, high-grade stenosis, or occlusion), treatment, revascularization outcome, and complications were recorded.OBJECTIVE: The objective of our study was to describe an association between the radiographic appearance of distressed intravascular implants and venous stenosis or occlusion and to determine the success of reparative endovascular procedures.RESULTS: The mean time to distress was 23 months. Fifty-two (67%) patients underwent venography for symptoms and 26 (33%) for surveillance. Forty-five (58%) implants were pursed; 19 (24%), straightened; nine (12%), contracted; and five (6%), fractured. Venography depicted 48 (62%) high-grade stenoses, 19 (24%) complete occlusions, and six (8%) mild stenoses. Of the 73 patients who underwent an intervention, 29 (40%) underwent angioplasty, 15 (21%) underwent angioplasty and stenting, 15 (21%) underwent sharp recanalization, and five (7%) underwent thrombolysis. Revascularization was successful in 67 (92%). Three minor complications occurred.All authors: Abramowitz SD, Chick JFB, Cooper KJ, Khaja MS, Osher ML, Saad WE, Williams DMFiscal year: FY2018Digital Object Identifier: Date added to catalog: 2017-09-18
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Item type Current library Collection Call number Status Date due Barcode
Journal Article MedStar Authors Catalog Article 28858539 Available 28858539

Available online from MWHC library: Sept 1965 - present

CONCLUSION: Distressed intravascular implants are associated with high-grade venous stenosis or occlusion. Reparative interventions are usually technically successful.

MATERIALS AND METHODS: Seventy-eight patients with distressed stents or inferior vena cava (IVC) filters characterized by pursing (short-axis contracture), straightening, longitudinal contraction (long-axis contracture), or fracture were identified from retrospective review of a venous registry for the period from February 2004 to October 2016. Patients originally presented with superior vena cava (SVC) syndrome (n = 25), arm swelling (n = 16), iliocaval thrombosis (n = 21), and lower extremity deep venous thrombosis (n = 16), and stents were initially placed in 65 and filters in 13. Implants were located in the IVC (n = 24), subclavian vein (n = 16), brachiocephalic vein (n = 15), common iliac vein (n = 10), multiple veins (n = 4), axillary vein (n = 4), common femoral vein (n = 3), SVC (n = 1), and internal jugular vein (n = 1). Implants included Wallstents in 63 patients; Smart stents in two patients; and Celect Platinum, Denali, Greenfield, and Trapease IVC filters in two, three, two, and six patients, respectively. Venographic indication, distress type, time from initial normal placement to identification of distress, venographic finding (patent, mild stenosis, high-grade stenosis, or occlusion), treatment, revascularization outcome, and complications were recorded.

OBJECTIVE: The objective of our study was to describe an association between the radiographic appearance of distressed intravascular implants and venous stenosis or occlusion and to determine the success of reparative endovascular procedures.

RESULTS: The mean time to distress was 23 months. Fifty-two (67%) patients underwent venography for symptoms and 26 (33%) for surveillance. Forty-five (58%) implants were pursed; 19 (24%), straightened; nine (12%), contracted; and five (6%), fractured. Venography depicted 48 (62%) high-grade stenoses, 19 (24%) complete occlusions, and six (8%) mild stenoses. Of the 73 patients who underwent an intervention, 29 (40%) underwent angioplasty, 15 (21%) underwent angioplasty and stenting, 15 (21%) underwent sharp recanalization, and five (7%) underwent thrombolysis. Revascularization was successful in 67 (92%). Three minor complications occurred.

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