• Daniel Quandt, Bharat Ramchandani, Gemma Penford, John Stickley, Vinay Bhole, Chetan Mehta, Timothy Jones, David James Barron, and Oliver Stumper.
• The Heart Unit, Birmingham Children's Hospital NHS Foundation Trust, Birmingham, UK.
• Heart. 2017 Dec 1; 103 (24): 1985-1991.

ObjectiveThis study sets out to compare morbidity, mortality and reintervention rates after stenting of the right ventricular outflow tract (RVOT) versus modified Blalock-Taussig shunt (mBTS) for palliation in patients with tetralogy of Fallot (ToF)-type lesions.MethodsRetrospective case review study evaluating 101 patients (64 males) with ToF lesions who underwent palliation with either mBTS (n=41) or RVOT stent (n=60) to augment pulmonary blood flow over a 10-year period. Procedure-related morbidity, mortality and reintervention rates were assessed and compared.ResultsAdmission rate to paediatric intensive care unit (PICU) was lower in the RVOT stent group (22% vs 100%; p<0.001). Thirty-day mortality in the RVOT stent group was (1/60 (1.7%)) compared with (2/41 (4.9%)) in the mBTS group (p=0.565). Mortality until surgical repair was comparable in both groups (5/60, 8.4%, including three non-cardiac death in the RVOT stent group vs 2/41, 4.9% (p=0.698)). Total hospital length of stay was shorter for the RVOT stent group (median 7 days vs 14 days; p<0.003). Time to surgical repair was shorter in the RVOT stent group (median 232 days, IQR 113-360) compared with the mBTS group (median 428 days, IQR 370-529; p<0.001) due to improved pulmonary arterial growth.ConclusionRVOT stenting in Fallot-type lesions can be accomplished safely, with lower PICU admission rate, a shorter hospital length of stay and shorter duration of palliation until complete repair compared with mBTS palliation.© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

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