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Percutaneous Closure of Veno-venous Collaterals in Adult Patients with Univentricular Physiology After Fontan Palliation: Single Centre Experience and Systematic Review

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Date 2024 Dec 23
PMID 39712986
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Abstract

Background: The Fontan operation resulted in improved survival of patients with congenital heart defects not equipped to sustain biventricular circulation. Long-term complications are common, such as veno-venous collaterals (VVC). The aim of this study was to evaluate patient characteristics, percutaneous treatment strategy and (short-term) outcomes in adult Fontan patients with VVC, and review literature to date.

Methods: In this single-centre retrospective observational cohort study, patients who underwent percutaneous VVC closure between 2017 and 2023 were identified.

Results: Thirteen patients underwent percutaneous VVC closure (77 % female, age at intervention 24 ± 4 years, 77 % systemic left ventricle, 77 % extracardiac tunnel, median conduit size 16 [16-20]mm). Indications for closure were symptoms and/or significant exercise-related hypoxia. Mean Fontan pressure was 10±4 mmHg. The VVC originated from tributaries of the vena cava superior (VCS) and connected to pulmonary veins (8 VVC, 32 %), VCS to systemic atrium (3 VVC, 12 %), VCS to coronary sinus (3 VVC, 12 %) and tributaries of vena cava inferior to pulmonary veins (11 VVC, 44 %). Twenty-three VVC were occluded using coils and/or plugs. No periprocedural complications occurred. At first follow-up at least 6 months after closure (n = 11), 9 patients (82 %) reported symptom reduction. Saturation at rest and peak exercise increased significantly (96 ± 3 to 98 ± 1 %, p = 0.040; 89 ± 3 to 93 ± 5 %, p = 0.024, respectively). Exercise capacity remained unchanged.

Conclusions: VVC typically connect the tributaries of the vena cava inferior and/or superior with the pulmonary veins. Low Fontan pressures do not exclude the presence of VVC. Percutaneous closure of VVC is technically feasible, safe, and associated with symptom reduction and a significant rise in resting and exercise oxygen saturation.

References
1.
Schwartz M, Glatz A, Rome J, Gillespie M . The Amplatzer vascular plug and Amplatzer vascular plug II for vascular occlusion procedures in 50 patients with congenital cardiovascular disease. Catheter Cardiovasc Interv. 2010; 76(3):411-7. DOI: 10.1002/ccd.22370. View

2.
FONTAN F, Baudet E . Surgical repair of tricuspid atresia. Thorax. 1971; 26(3):240-8. PMC: 1019078. DOI: 10.1136/thx.26.3.240. View

3.
de Leval M, Kilner P, Gewillig M, Bull C . Total cavopulmonary connection: a logical alternative to atriopulmonary connection for complex Fontan operations. Experimental studies and early clinical experience. J Thorac Cardiovasc Surg. 1988; 96(5):682-95. View

4.
Patan S . Vasculogenesis and angiogenesis. Cancer Treat Res. 2004; 117:3-32. DOI: 10.1007/978-1-4419-8871-3_1. View

5.
Rijnberg F, van Assen H, Hazekamp M, Roest A, Westenberg J . Hemodynamic Consequences of an Undersized Extracardiac Conduit in an Adult Fontan Patient Revealed by 4-Dimensional Flow Magnetic Resonance Imaging. Circ Cardiovasc Imaging. 2021; 14(8):e012612. DOI: 10.1161/CIRCIMAGING.121.012612. View