Pifko El, et al. - A comparative scrutiny was carried out of the success rates and time to placement for Manual Intraosseous (IO) with EZ-IO needles in Paediatric Emergency Department (PED) patients ≤8 and >8 kg. No variation was reported in the performance, between Manual and EZ-IO devices in children ≤8 kg. However, the Manual IO were placed more quickly. Lower success rates with EZ-IO devices were unveiled in children ≤8 kg than >8 kg. Prospective trials ought to target the training for IO placement in children ≤8 kg.