Stenting for external outflow graft obstruction of a left ventricular assist device via a surgical axillary approach

External outflow graft obstruction is an uncommon late complication in patients supported with a fully magnetically levitated left ventricular assist device. Progressive extrinsic compression of the outflow graft can impair pump performance and lead to symptomatic deterioration, requiring intervention to restore graft patency. This video tutorial presents a hybrid procedure combining surgical transaxillary access with endovascular stent implantation for treatment of external outflow graft obstruction when transfemoral access is not feasible. A 72-year-old woman with ventricular assist device support presented with exertional dyspnoea. Imaging demonstrated a persistent external narrowing of the outflow graft distal to the cannula, and invasive assessment confirmed a significant pressure gradient. Severe kinking of the femoral vessels excluded conventional femoral access. After induction of general anaesthesia, the axillary artery was exposed through an infraclavicular incision and accessed under direct vision. A vascular sheath was introduced, allowing retrograde advancement of guidewires across the stenotic graft segment. Two overlapping balloon-expandable covered stents were deployed under fluoroscopic guidance to restore luminal diameter and antegrade flow. Completion angiography confirmed satisfactory stent expansion and improved device flow.

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Publication Details

Journal
Multimedia Manual of Cardio-Thoracic Surgery
Published
2026-03-04
DOI
https://doi.org/10.1510/mmcts.2025.160
Primary Topic
Mechanical Circulatory Support Devices
Type
article
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article

Stenting for external outflow graft obstruction of a left ventricular assist device via a surgical axillary approach

Leonhard Wert, Evgenij V Potapov, Vanessa I. T. Zwaans, Stephan Dreysse et al.
Multimedia Manual of Cardio-Thoracic Surgery
Mechanical Circulatory Support Devices
article

Stenting for external outflow graft obstruction of a left ventricular assist device via a surgical axillary approach

Leonhard Wert, Evgenij V Potapov, Vanessa I. T. Zwaans, Stephan Dreysse, V. Falk, Christoph Starck, Carla L. Schuering
article en

Abstract

External outflow graft obstruction is an uncommon late complication in patients supported with a fully magnetically levitated left ventricular assist device. Progressive extrinsic compression of the outflow graft can impair pump performance and lead to symptomatic deterioration, requiring intervention to restore graft patency. This video tutorial presents a hybrid procedure combining surgical transaxillary access with endovascular stent implantation for treatment of external outflow graft obstruction when transfemoral access is not feasible. A 72-year-old woman with ventricular assist device support presented with exertional dyspnoea. Imaging demonstrated a persistent external narrowing of the outflow graft distal to the cannula, and invasive assessment confirmed a significant pressure gradient. Severe kinking of the femoral vessels excluded conventional femoral access. After induction of general anaesthesia, the axillary artery was exposed through an infraclavicular incision and accessed under direct vision. A vascular sheath was introduced, allowing retrograde advancement of guidewires across the stenotic graft segment. Two overlapping balloon-expandable covered stents were deployed under fluoroscopic guidance to restore luminal diameter and antegrade flow. Completion angiography confirmed satisfactory stent expansion and improved device flow.

Multimedia Manual of Cardio-Thoracic SurgeryVol. 2026
ETH Zurich (CH), Deutsches Herzzentrum der Charité (DE), German Centre for Cardiovascular Research (DE), Charité - Universitätsmedizin Berlin (DE)
Openalex Percentile: Top 35%
Mechanical Circulatory Support Devices
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