Zummer J, et al. - Experts aspired to explore whether ultrasound performed by emergency physicians improves the probability of first-attempt success for lumbar puncture in children. This investigation was conducted in two tertiary care, pediatric, university-affiliated emergency departments in 2017–2018. Eligible candidates were children younger than 19 years old needing a lumbar puncture (LP) in the emergency department. Study participants (n = 166) were randomized to either the standard landmark-based LP (SLP) or ultrasound-assisted LP (UALP) groups. This prospective, randomized controlled trial does not support the routine use of ultrasound in children to perform a lumbar puncture. Ultrasound may be used as an adjunct and teaching tool in certain clinical situations, given the minimal harm and ease of performance.