False Lumen Patency After Occlusion With Physician-Modified Candy-Plug in Aortic Dissections: A 2-Center Experience

Abstract

Objective:

To evaluate the early and mid-term results of physician-modified candy-plug (pmCP) in patients with type-B or residual type-A aortic dissection (TBRAD).

Methods:

All patients with TBRAD who received false lumen (FL) occlusion with pmCP between September 2018 and May 2024 were analyzed. Primary outcomes were technical and clinical success, and overall mortality. Secondary outcomes were postoperative aortic remodeling and aortic reintervention.

Results:

Seventeen patients (88% male; mean age 69±12 years) underwent FL occlusion with a pmCP. Nine patients (53%) were emergently treated. The technical and clinical successes were 100% and 82%, respectively. One patient (6%) died postoperatively. Early complete FL occlusion was observed in 82% of the patients. One patient (6%) required an early pmCP-related reintervention. During a mean follow-up of 15±5 months, 75% of the patients had complete thoracic FL thrombosis while 13% of them aortic remodeling in the last computed tomography (CT) scan. Aneurysm size remained stable in 69% of the cases. There were no aortic-related re-interventions during follow-up.

Conclusions:

The pmCP technique is a feasible and promising alternative technique, with high primary technical and clinical success rate. Stable aortic diameters can be expected during follow-up, thus reducing the need for further aortic reintervention.

Clinical Impact:

Persistence of false lumen (FL) patency after thoracic endovascular aortic repair (TEVAR) for thoracic aortic dissection (TBAD) remains a significant challenge for physicians. Various strategies have been developed to address retrograde FL patency, including the candy-plug technique. This technique involves modifying thoracic stent grafts and placing an additional plug to occlude the reduced stent graft waist.Since its introduction, three generations of custom-made candy-plug devices (Cook Medical, Bloomington, IN, USA) have been developed. However, delivery times vary across countries and vascular surgery services, complicating procedural planning, particularly in symptomatic patients or cases of rapid FL diameter progression.In this study, we provide a step-by-step description of the physician-modified candy-plug technique and present our preliminary results.

Keywords

candy-plug false lumen perfusion false lumen embolization type-B aortic dissection TEVAR

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