LAUSR

496 www.pccmjournal.org May 2018 • Volume 19 • Number 5 Ultimately, in determining optimal CPR targets in pediatric resuscitation what is sorely lacking is good outcomes data and experimental data of perfusion pressures based on the range of sizes which are encountered in growing children. In adults, a small but measurable decline in survival accompanied excessive compression depths, particularly in women (15) where one expects smaller body habitus. This large study by Niles et al (5) (n = 9,136) examined early and late survival. No such study exists in pediatric cardiac arrest. Until we have such data, we remain uncertain how sensible our targets are and how alarmed we should be at our failure to achieve them.