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Published online by Cambridge University Press: 30 June 2025
Recommendations for immunisation practices in children with single ventricle CHD are lacking. A survey of 53 heart centres received responses from 40 centres (33 complete and 7 partial) revealing variability in immunisation recommendations. Only 11% have a written protocol. Immunisations were delayed before cardiopulmonary bypass in 94% (32/34) and after cardiopulmonary bypass in 97% (30/31), with 34% (13/38) re-dosing some immunisations post cardiopulmonary bypass. Further research is needed to develop guidelines.