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  • Title: Bronchial compression following pulmonary artery stenting in single ventricle lesions: how to prevent, and how to decompress.
    Author: Grohmann J, Stiller B, Neumann E, Jakob A, Fleck T, Pache G, Siepe M, Höhn R.
    Journal: Clin Res Cardiol; 2016 Apr; 105(4):323-31. PubMed ID: 26415706.
    Abstract:
    OBJECTIVES: To assess airway compression during pulmonary artery (PA) intervention in single ventricle (SV) palliation. BACKGROUND: SV lesions with a prominent neo-aortic root are considered a high risk for branch PA and/or bronchial stenosis. PA stenting is well established, but may result in ipsilateral bronchial compression. METHODS: Single-centre retrospective analysis of 19 palliated SV patients with branch PA stenosis and close proximity to the ipsilateral main bronchus who underwent cardiac catheterisation at a median age and weight of 8.5 years (0.5-25) and 16.5 kg (6-82) between 12/2011 and 05/2015. RESULTS: Two of the 19 patients suffered an almost-closed left-main bronchus (LMB) following PA stenting. Fortunately, LMB decompression succeeded in both those patients by re-shaping the PA stents by compressing the chest while splinting the LMB with an inflated balloon. To prevent the other 17 patients from suffering this serious complication, we adopted a thorough preparation strategy: 13 patients underwent safe simultaneous bronchoscopy and cardiac catheterisation; in the remaining 4 patients CT-angiography enabled accurate risk evaluation prior to re-catheterisation. CONCLUSIONS: In SV lesions accompanied by branch PA stenosis, thorough preparation via cross-sectional imaging is mandatory, including simultaneous bronchoscopy and cardiac catheterisation in selected cases, to rule out any airway compression before considering endovascular stent implantation. If a PA stent's compression has already caused severe bronchial obstruction, our balloon-splinted decompression technique should be considered.
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