Background Worldwide organisations advocate standardising the management of intravenous drugs as an essential strategy to increase safety in paediatric healthcare settings. Intravenous administration is a route associated with some potential complications. Many adverse events are related to the use of intravenous medications, and the great variability in their handling and preparation represents an added risk that jeopardises the safety of children.

Purpose To standardise the dilutions of intravenous drugs most commonly administered to Spanish hospitalised paediatric and neonatal patients.

Methods The process leading to the standardisation of concentrations was undertaken following a two-round modified Delphi procedure. The consensus included the most common drugs administered by continuous or intermittent intravenous infusion to hospitalised and/or critically ill paediatric patients.

Results For paediatric patients, the proposal included a total of 102 drugs (45 continuous infusion and 59 intermittent infusion), with 192 concentrations to be standardised. The final consensus included 101 drugs (99%), of which 44 were continuous infusion and 59 intermittent infusion; 160 concentrations were standardised (72.7%). For neonates, the initial proposal included 80 drugs (38 continuous infusion and 43 intermittent infusion), with 189 concentrations to be standardised. The final consensus included 80 drugs (100%), of which 38 were continuous infusion and 43 were intermittent infusion; 120 concentrations were standardised (49.2%).

Conclusions This proposal showed that standardisation is a feasible approach that can be reached by other healthcare institutions. It can be used in other centres and contribute in the future to unifying paediatric clinical practice.